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Common Electrode and Welding Wire Models: A Comprehensive Guide

Common types of welding wires

General-purpose welding wires:

  1. DY-YJ502(Q) – Titanium slag type flux-cored welding wire. Excellent processability and mechanical performance, suitable for all-position welding. Especially known for its excellent low-temperature toughness, achieving 3Y level certification from classification societies. Widely used in shipbuilding, steel structures, bridges, etc.
  2. DY-YJ507(Q) – Alkaline slag type flux-cored welding wire. Excellent mechanical performance, low diffusible hydrogen content, and excellent low-temperature crack resistance. Impact toughness at -40 degrees Celsius can reach above 80. Used in mechanical manufacturing, hydropower, petrochemical equipment, etc.
  3. DY-YJ607(Q) – Alkaline slag type flux-cored welding wire. Excellent mechanical performance, low diffusible hydrogen content, suitable for welding high-strength and high-toughness steel of 60kg grade.
  4. YJ502CrNiCu(Q) – Titanium type flux-cored welding wire for all-position welding. Used for welding atmospheric corrosion-resistant steel, such as welding in marine platforms.
  5. YJ502Ni(Q) – Titanium type flux-cored welding wire for all-position welding. High low-temperature impact absorption capacity, suitable for metal structures used at -40 degrees Celsius.

Heat-resistant steel series flux-cored welding wires:

  1. DY-YR302(Q) – Titanium slag type flux-cored welding wire, suitable for welding 1Cr-0.5Mo and 1.25Cr-0.5Mo heat-resistant steels. Widely used in the boiler and pressure vessel industry.
  2. DY-YR312(Q) – Suitable for welding 12CrMoV ferritic heat-resistant steel, widely used in the boiler and pressure vessel industry.
  3. DY-YR317(Q) – Alkaline slag type flux-cored welding wire. Suitable for welding 12CrMoV ferritic heat-resistant steel, with excellent low-temperature impact performance.
  4. DY-YR402(Q) – Used for welding 2.25Cr-1Mo heat-resistant steel.

Gas shielded welding wires for stainless steel:

  1. DY-YA308(Q) – 18%Cr-8%Ni stainless steel welding.
  2. DY-YA308L(Q) – Ultra-low carbon 18%Cr-8%Ni stainless steel welding.
  3. DY-YA309(Q) – Transition layer welding for dissimilar steel welding or composite steel plate and overlay welding with stainless steel.
  4. DY-YA316(Q) – 18%Cr-12%Ni stainless steel welding.

Gas shielded overlay welding flux-cored wires:

  1. DY-YD350(Q) – Widely used for overlay welding of metal-interfacing wear parts and mild erosion wear parts, with HRC35 hardness.
  2. DY-YD450(Q) – Suitable for overlay welding of wear-resistant to erosion and metal-interfacing wear parts, with HRC45 hardness.
  3. DY-YD600(Q) – Widely used for wear-resistant to erosion parts, with HRC55-60 hardness.
Flux-Cored Wires

Submerged Arc Overlay Welding Flux-Cored Wires:

  1. DY-YD14(M) – Mainly used for repairing carbon steel and low alloy steel components or as transition layers for other overlay welding materials, with HRC26±2 hardness.
  2. DY-YD224B(M) – Mainly used for overlay welding and repairing of hot rolling rolls and other wear-resistant components, with HRC59 hardness.
  3. DY-YD420(M) – Martensitic type overlay welding flux-cored wire containing 13% chromium. It is corrosion-resistant and wear-resistant. Suitable for hardfacing of components such as continuous casting rolls, steam valves, wedge valves, safety valves, etc.
  4. DY-YD423(M) – Used for hardfacing of hot rolling rolls and continuous casting rolls at higher temperatures. The overlay welding layer has excellent corrosion resistance, wear resistance, and thermal impact resistance, with HRC45-48 hardness.
  5. DY-YD430(M) – Ferritic type overlay welding flux-cored wire containing 17% chromium. Used for corrosion-resistant hardfacing, with good resistance to high-temperature corrosion and as a base layer for stainless steel composite steel welding, with HRC23 hardness.
  6. DY-YD414N(M) – Nitrogen-containing martensitic type overlay welding flux-cored wire, using nitrogen instead of carbon to improve its hardness and crack resistance. It has good corrosion resistance, wear resistance, and thermal impact resistance. Used for hardfacing of continuous casting rolls, with HRC43 hardness.

Stainless Steel Solid Core Welding Wires:

Stainless steel solid core welding wires can be used for both inert gas shielded welding (TIG, MIG) and submerged arc welding. MIG welding with stainless steel wires can achieve high-efficiency welding and is easily automated, making it widely used in overlay welding and thin plate joints. The chemical composition of MIG welding wires for stainless steel is the same as TIG welding wires.

However, for certain stainless steel grades, there are MIG welding wires with higher silicon (Si) content, such as ER308Si and ER309Si corresponding to ER308 and ER309 welding wires. The high Si content (around 0.8%) reduces the surface tension of the molten metal, resulting in finer droplet particles and easier droplet transfer, making the arc more stable.

Stainless Steel Spring Wires:

Stainless steel hydrogen relief wires:

  1. When the plate thickness is less than 3mm, the arc can be started and stopped directly on the workpiece. For plate thickness greater than 3mm, for longitudinal seams, an arc-starting plate and an arc-stopping plate can be used to exclude the starting and ending zones of the small hole from the weld seam. When welding a circumferential seam, an increasing current and ion gas flow method is used to form an appropriate small hole formation zone, while a decreasing current and ion gas flow method is used to obtain the small hole ending zone. Figure 8 shows the control curve for the slope of current and ion arc gas flow rate during small hole welding. Some plasma arc equipment is equipped with advanced flow control devices that can precisely control the ion gas flow rate during the welding process.
  2. The ion gas flow rate: Increasing the ion gas flow rate increases the plasma flow force and penetration capability. When other conditions are constant, to form a small hole, there must be sufficient ion gas flow rate. However, excessively high ion gas flow rate can enlarge the diameter of the small hole and affect the weld formation. After determining the nozzle aperture, the ion gas flow rate is determined based on the welding current and welding speed, which means that there must be an appropriate match between the ion gas flow rate, welding current, and welding speed.
  3. Welding current: Increasing the welding current increases the penetration capability of the plasma arc. Similar to other arc welding methods, the welding current is determined based on the plate thickness or penetration requirements. If the current is too small, a small hole cannot be formed. If the current is too large, the diameter of the small hole will be too large, causing the molten metal to drop. Moreover, excessive current can cause a twin arc phenomenon. Therefore, after determining the nozzle structure, to obtain a stable small hole welding process, the welding current must be limited to a suitable range, and this range is related to the ion gas flow rate. Figure 9a shows the matching relationship between the small hole welding current and ion gas flow rate on an 8mm thick stainless steel plate when the nozzle structure, plate thickness, and other process parameters are given. Number 1 represents a regular cylindrical nozzle, and number 2 represents a converging-diverging nozzle, which reduces the nozzle compression level and expands the current range. With this type of nozzle, even at higher currents, a twin arc does not occur. The upper limit of the current is increased, allowing for thicker workpieces and higher welding speeds.
  4. Welding speed: Welding speed is an important process parameter that affects the small hole effect. When other conditions are constant, increasing the welding speed reduces the heat input to the weld seam, resulting in a decrease in the diameter of the small hole until it disappears. Conversely, if the welding speed is too low, the base metal overheats, and defects such as sinking or molten metal leakage may occur in the back weld seam. The determination of welding speed depends on the ion gas flow rate and welding current, and the matching relationship between these three process parameters is shown in Figure 9b. From the figure, it can be seen that to obtain a smooth small hole welding seam, as the welding speed increases, the welding current must also increase. If the welding current remains constant, increasing the ion gas flow rate requires a corresponding decrease in the welding speed, and if the welding speed remains constant, increasing the ion gas flow rate should correspondingly reduce the current.
  5. Nozzle distance: If the distance is too large, the penetration capability decreases. If the distance is too small, the nozzle can be contaminated by spatter. Generally, a distance of 3-8mm is used. Compared with tungsten inert gas (TIG) welding, changes in nozzle distance have less effect on welding quality.
  6. Protection gas flow rate: The protection gas flow rate should be in proportion to the ion gas flow rate. When the ion gas flow rate is not large and the protection gas flow rate is too large, it will cause turbulence in the gas flow, affecting arc stability and protection effectiveness. The protection gas flow rate for small hole welding is generally within the range of 15-30L/min.

Important notes:

  1. Chromium stainless steels have certain corrosion resistance (oxidizing acids, organic acids, erosion), heat resistance, and wear resistance. They are commonly used materials in power plants, chemical plants, petroleum industry, etc. However, the welding performance of chromium stainless steels is relatively poor, so attention should be paid to welding processes, heat treatment conditions, and the selection of suitable welding electrodes.
  2. Chromium 13 stainless steel has significant post-weld hardening and is prone to cracking. If welding with the same type of chromium stainless steel electrodes (G202, G207), preheating above 300℃ and slow cooling treatment at around 700℃ after welding are necessary. If post-weld heat treatment is not feasible, chromium-nickel stainless steel electrodes (A107, A207) should be used.
  3. Chromium 17 stainless steel is improved in corrosion resistance and weldability by adding a suitable amount of stabilizing elements such as titanium (Ti), niobium (Nb), molybdenum (Mo), etc. When using the same type of chromium stainless steel electrodes (G302, G307), preheating above 200℃ and tempering treatment at around 800℃ after welding are required. If post-weld heat treatment is not feasible, chromium-nickel stainless steel electrodes (A107, A207) should be used.
  4. Chromium-nickel stainless steel electrodes have excellent corrosion resistance and oxidation resistance, widely used in the chemical, fertilizer, petroleum, and medical equipment manufacturing industries.
  5. When welding chromium-nickel stainless steel, repeated heating can cause the precipitation of carbides, leading to reduced corrosion resistance and mechanical properties.
  6. Chromium-nickel stainless steel electrodes come in titanium-calcium type and low hydrogen type. The titanium-calcium type can be used for both AC and DC welding, but in AC welding, the penetration depth is shallower, and it is prone to reddening. Therefore, DC power sources should be used whenever possible. Electrodes with a diameter of 4.0mm and below can be used for all-position welding, while those with a diameter of 5.0mm and above are suitable for flat welding and fillet welding.
  7. Electrodes should be kept dry during use. Titanium-calcium type electrodes should be dried at 150℃ for 1 hour, while low hydrogen type electrodes should be dried at 200-250℃ for 1 hour (repeated drying should be avoided as it may cause cracking and peeling of the coating). It is important to prevent the electrodes from being contaminated with oil or other dirt, as this can increase the carbon content in the weld and affect the quality of the weldment.
  8. To prevent intergranular corrosion caused by overheating, the welding current should not be too high, about 20% lower than that used for carbon steel electrodes. The arc should not be too long, and interlayer rapid cooling is desirable, making narrow weld beads more suitable.

List of steel welding materials for pressure vessels

TypesGradeChina GBAmerica AWSTypesGradeChina GBAmerica AWS
Carbon steel welding rodsTHJ422E4303—Stainless steel welding rodsTHA002E308L-16E308L-16
THJ426E4316E6016THA022E316L-16E316L-16
THJ427E4315E6015THA102E308-16E308-16
THJ506E5016E7016THA107E308-15E308-15
THJ507E5015E7015THA132E347-16E347-16
Low alloy steel welding rodsTHJ506RE5016-GE7016-GTHA137E347-15E347-15
THJ507RHE5015-GE7015-GTHA202E316-16E316-16
THJ557RE5MoV-15—THA207E316-15E316-15
THJ606E6016-D1E9016-D1THA212E318-16E318-16
THJ607E6015-D1E9015-D1THA242E317-16E317-16
THW707NiE5515-C1—THA302E309-16E309-16
THR207E5515-B1E8015-B1THA307E309-15E309-15
THR307E5515-B2E8015-B2THG202E410-16E410-16
THR317E5515-B2-V————
THR407E6015-B3—Gas shielded solid core welding wireTHQ-G2SiEN440 G38 4MG2Si
THR507E5MoV-15—THQ-50CG4EN440 G38 3CG4Si1

Argon arc welding wire

GradeModelGBCategoryMain applications:
THT49-1ER49-1Carbon steel welding wireUsed for butt and fillet welding of high-pressure pipes in shipbuilding, petrochemical, nuclear power, etc.
THT-10MnSiER50-GUsed for welding thin plates and backing welding structures.
THT50-6（TIG-J50）ER50-6Used for welding of pipes, flat plates, etc. requiring precise polishing.
THT55-B2ER55-B2Pearlitic heat-resistant steel welding wireUsed for welding of boiler heating surface tubes, steam pipes, high-pressure vessels, and structures of petroleum refining equipment operating below 550℃.
THT55-B2VER55-GUsed for welding of boiler heating surface tubes, steam pipes, high-pressure vessels, and structures of petroleum refining equipment operating below 550℃.
THT-307THS-307H09Cr21Ni9Mn4MoStainless steel welding wireUsed for welding of bulletproof steel, cladding stainless steel, and dissimilar materials of carbon steel.
THT-307SiTHS-307SiH10Cr21Ni10Mn6Si1Used for welding of high manganese steel, hardened wear-resistant steel, and non-magnetic steel.
THT-308THS-308H08Cr21Ni10SiUsed for welding of stainless steel structures such as 308, 301, 304, etc.
THT-308LTHS-308LH03Cr21Ni10SiUsed for welding of stainless steel structures such as 304L, 308L, etc.
THT-308LSiTHS-308LSiH03Cr21Ni10Si1Used to improve the processability, weldability, and fluidity of the filler metal.
THT-309THS-309H12Cr24Ni13SiUsed for welding dissimilar steels, such as carbon steel, low alloy steel, and stainless steel.
THT-309MoTHS-309MoH12Cr24Ni13Mo2Used for welding of Cr22Ni12Mo2 composite steel and dissimilar steels.
THT-309LTHS-309LH03Cr24Ni13SiUsed for welding of 309S, 1Cr13, 1Cr17, low-carbon stainless steel, low-carbon cladding steel, and dissimilar steels.
THT-309LSiTHS-309LSiH03Cr24Ni13Si1Used for welding of 309 stainless steel and 304 stainless steel with carbon steel.
THT-309LMoTHS-309LMoH03Cr24Ni13Mo2Used for welding of dissimilar steels or low toughness martensitic and ferritic stainless steels.
THT-310THS-310H12Cr26Ni21SiUsed for welding of heat-resistant steels operating at high temperatures and for welding of 1Cr5Mo, 1Cr13, etc. that cannot be preheated or post-heat treated.
THT-312THS-312H15Cr30Ni9Used for welding of dissimilar cladding stainless steel, hardened low alloy steel, and in cases where welding is difficult or porosity is prone to occur.
THT-316THS-316H08Cr19Ni12Mo2SiUsed for welding of structures in phosphoric acid, sulfuric acid, acetic acid, and salt corrosion media.
THT-316LTHS-316LH03Cr19Ni12Mo2SiUsed for welding of chromium stainless steels and composite steels in urea, synthetic fibers, and other structures that cannot undergo heat treatment.
THT-316LSiTHS-316LSiH03Cr19Ni12Mo2Si1Used for welding of the same type of stainless steel and composite steel structures.
THT-317THS-317H08Cr19Ni14Mo3Used for welding of important corrosion-resistant chemical containers.
THT-317LTHS-317LH03Cr19Ni14Mo3Used for welding of important corrosion-resistant chemical containers.
THT-321THS-321H08Cr19Ni10TiUsed for welding of 304, 321, 347 stainless steels and heat-resistant steels.
THT-347THS-347H08Cr20Ni10NbUsed for welding of 304, 321, 347 stainless steels and heat-resistant steels.
THT-410THS-410H12Cr13Used for overlay welding of 410, 420 stainless steels and corrosion-resistant and wear-resistant surface overlays.
THT-420THS-420H31Cr13Used for overlay welding of corrosion-resistant materials for Cr13 martensitic stainless steels.
THT-430THS-430H10Cr17Used for overlay welding on surfaces of corrosion (nitric acid) and heat-resistant stainless steels.
THT-2209THS-2209H03Cr22Ni8Mo3NUsed for welding of duplex stainless steels containing 22% Cr.

Carbon steel welding rods

GradeModelGBChemical composition of deposited metal (%)(≤)Mechanical properties of deposited metal (≥)Characteristics and applications
CMnSiSPOthersRel/RP0.2MPaRmMPaA%AKVJ
J421E43130.100.32/0.550.300.0300.035—355440/570220℃47Welding of low carbon steel structures, especially suitable for intermittent welding and fillet welding of thin plates and small components. Can be welded in all positions.
THJ421XE43130.100.32/0.550.300.0350.040—330420170℃27Welding of low carbon steel and galvanized plates, especially suitable for vertical-down welding and intermittent welding of thin plates.
THJ421Fe18E43240.120.30/0.600.350.0350.040—330420170℃47Suitable for flat welding and fillet welding of ship structures made of low carbon steel and other corresponding grades of common low carbon steel.
THJ422E43030.100.32/0.550.250.0350.040—330420220℃27Welding of low carbon steel structures and low alloy steel structures of equivalent strength grade, such as 09Mn2. Can be welded in all positions.
THJ422GME43030.100.32/0.550.250.0350.040—330420220℃27Suitable for welding surface decorative seams of offshore platforms, ships, vehicles, and construction machinery.
THJ423E43010.100.32/0.550.300.0350.040—33042022-20℃27Similar applications as THJ422, but its vertical welding operability is slightly inferior to THJ422, and it is more affordable in price compared to THJ422.
THJ425XE4310E43110.200.32/0.600.300.0350.040—33042022-30℃27Suitable for butt welding of low carbon steel pipes and low alloy steel pipes, with vertical-down welding in all positions. Easy to perform single-sided welding and double-sided formation during bottom layer welding.
THJ426E43160.101.250.900.0350.040—33042022-30℃27Welding of important low carbon steel and low alloy steel structures, with welds having good mechanical properties and crack resistance. Can be welded in all positions.
THJ427E43150.101.250.900.0350.040—33042022-30℃27Same applications and characteristics as THJ426, using a power source with reverse polarity.
THJ501Fe15E50240.121.250.900.0350.040—400490170℃27Welding of carbon steel and low alloy steel structures with corresponding strength, suitable for flat welding and fillet welding. The deposition efficiency is 150%.
THJ501Fe18E50240.121.250.900.0350.040—400490170℃27The application is similar to THJ501Fe15, with a deposition efficiency of around 180%.
THJ502E50030.121.250.300.0350.040—400490200℃27Welding of important carbon steel and low alloy steel structures with corresponding strength, can be welded in all positions.
THJ505XE5010E50110.200.50/1.000.300.0350.040—40049020-30℃27Welding of carbon steel and low alloy steel pipe circumferential seams with corresponding strength, using vertical-down welding in all positions. It is easy to perform single-sided welding and achieve double-sided formation during bottom layer welding.
THJ506E50160.121.600.750.0350.040—40049020-30℃27Suitable for all-position welding of medium carbon steel and low alloy steel structures, with welds exhibiting good mechanical and crack resistance properties.
THJ506-1E5016-10.121.600.750.0300.030—40049020-46℃27Suitable for all-position welding of low-temperature high-toughness materials.
THJ506Fe-1E5018-10.101.600.650.0300.030—420500/64022-50℃47The application is similar to THJ506-1, with the addition of iron powder in the flux coating to improve the deposition efficiency of the welding rod and enhance its process performance.
THJ506DE50160.121.600.750.0350.040—40049022-30℃27Specifically designed for bottom layer backing welding of medium carbon steel and low alloy steel structures, with easy single-sided welding and double-sided formation.
THJ506XE50160.121.600.750.0350.040—40049020-30℃47Particularly suitable for vertical-down fillet welds and lap welds, with aesthetically pleasing weld formation. Specifically designed for vertical-down welding with low hydrogen flux coating.
THJ506FeE50180.121.600.750.0350.040—40049022-30℃27The application is similar to THJ506, suitable for all-position welding. The flux coating contains iron powder, which can improve the deposition rate.
THJ506Fe13E50280.121.600.900.0350.040—40049022-20℃27The application is the same as THJ506, suitable for flat welding and fillet welding. The flux coating contains iron powder, which can improve the deposition efficiency.
THJ506Fe16E50280.121.600.900.0350.040—40049022-20℃27The application is the same as THJ506, suitable for flat welding and fillet welding. The deposition efficiency of the welding rod is around 160%.
THJ507E50150.100.85/1.400.650.0300.035—40049022-30℃47Suitable for all-position welding of medium carbon steel and low alloy steel structures, using a power source with reverse polarity. The welds exhibit good mechanical properties and crack resistance.
THJ507-1E5015-10.121.600.750.0300.030—40049022-46℃ 27Suitable for important structures made of carbon steel or low alloy steel, as well as shipbuilding grade A, B, C, D, E steels.

Low alloy steel welding rods

GradeModelGBChemical composition of deposited metal (%) (≤)Mechanical properties of deposited metal (≥)Characteristics and applications:
CMnSiSPOtherRel/RP0.2MPaRmMPaA%AKVJ
THJ502WCuE5003-G(TB)0.120.30/0.900.400.0300.030Cu0.20/0.50W0.20/0.50425(Example values)540(Example values)27(Example values)-40℃35(Example values)Weathering steel dedicated welding rods, used for welding of weather-resistant vehicles in railways.
THJ502NiCuE5003-G(TB)0.120.30/0.900.400.0300.030Cu0.20/0.50Ni0.20/0.50420(Example values)535(Example values)27(Example values)-40℃36(Example values)Special welding rods for weathering steel, used for welding weathering vehicles in railways.
THJ502NiCrCuE5003-G(TB)0.120.30/0.900.400.0300.030Cr0.20/0.50Ni0.20/0.50Cu0.20/0.50420(Example values)530(Example values)27(Example values)-40℃36(Example values)Mainly used for welding weather-resistant railway locomotives and vehicles.
THJ506NiCuE5016-G(TB)0.121.250.700.0250.030Cu0.20/0.40Ni0.20/0.5039049022-40℃27Used for welding of carbon steel and 50Kg grade weathering steel.
THJ506NiCrCuE5016-G(TB)0.101.250.600.0200.025Cu0.20/0.40Cr0.30/0.80Ni0.20/0.5040050022-40℃60Used for welding of 50Kg grade weathering steel.
THJ506NHE5016-G0.100.50/1.300.400.0200.030Cu0.20/0.35Mo0.30/0.5039049020-20℃47This welding rod is a special welding rod designed for 50kg grade weather-resistant steel, mainly used for welding important steel structures that require fire and weather resistance.
230(600℃)—≥25(600℃)—
THJ506RE5016-G0.101.00/1.500.500.0250.030Ni0.45/0.8039049022-40℃47Suitable for welding important structures such as oil platforms, ships, and high-pressure vessels.
THJ506RKE5016-G0.101.00/1.500.500.0250.030Ni0.45/0.8039049022-40℃47Can be used for welding low-temperature high-toughness materials.
THJ507RE5015-G0.101.00/1.500.500.0250.030Ni0.45/0.8039049022-40℃47Suitable for welding important structures such as oil platforms, ships, and high-pressure vessels.
THJ507RHE5015-G0.101.600.500.0250.025Ni0.45/0.8039049022-40℃47Used for welding of ships, bridges, high-pressure pipelines, pressure vessels, boilers, offshore platforms, and other important structures.
THJ507CuPE5015-G0.120.80/1.300.500.0350.06/0.12Cu0.20/0.5039049022-30℃27Used for welding of steel structures that are resistant to atmospheric and seawater corrosion in the copper-phosphorus series.
THJ507MoNbE5015-G0.120.60/1.200.650.0250.030Mo0.30/0.60Nb0.03/0.1539049022At room temperature  47Used for welding of steels resistant to hydrogen sulfide, hydrogen, nitrogen, ammonia, and hydrogen medium corrosion, such as 12SiMoVNb, 15MoV, etc.
THJ507MoWNbBE5015-G0.100.85/1.300.450.0250.030Nb0.01/0.04B0.0005/0.0015Mo0.40/0.6039049022At room temperature 47Used for welding in medium-temperature, high-pressure, and hydrogen-resistant, ammonia-corrosive environments, such as 12SiMoVNb.
THJ556E5516-G0.12≥1.000.30/0.700.0250.030—44054017-30℃27Used for welding of medium carbon steel and low alloy steel structures with corresponding strength grades, such as 15MnV.
THJ556RE5516-G0.121.00/1.800.30/0.700.0250.030Ni0.8544054017-40℃47Used for welding of low-temperature high-toughness materials and low alloy steels with corresponding strength grades.
THJ556RHE5516-G0.121.00/1.800.600.0200.020Ni0.60/1.2044054017-40℃54Used for welding of low-temperature high-toughness materials and low alloy steels with corresponding strength grades.
THJ556NiCrCuE5516-G(TB)0.101.600.600.0250.020Cu0.20/0.40Cr0.30/0.90Ni0.20/0.6044055022-40℃60Used for welding of 55kg grade weathering steel.
THJ557RE5515-G0.101.00/1.800.30/0.700.0250.030Ni0.8544054017-40℃47Used for welding of carbon steel and some low alloy steel structures.
THJ557E5515-G0.121.000.30/0.700.0250.030—44054017-30℃47Used for welding of medium carbon steel and some low alloy steels.
THJ557RHE5515-G0.121.00/1.800.600.0200.020Ni0.60/1.2044054017-40℃57Used for welding of medium carbon steel and some low alloy steels.
THJ606E6016-D10.121.25/1.750.600.0250.030Mo0.25/0.4549059015-30℃27Welding of medium carbon steel and low alloy steel with corresponding strength grades.
THJ606NiCrCuE5016-G(TB)0.102.00.600.0200.025Cu0.20/0.40Cr0.30/0.90Ni0.20/0.9055060020-40℃60Used for welding of 60Kg grade weathering steel, as well as welding of vehicles, near-shore engineering structures, bridges, etc.
THJ607E6015-D10.121.25/1.750.600.0250.030Mo0.25/0.4549059015-30℃27Used for welding of medium carbon steel and low alloy steel structures with corresponding strength grades, such as 15MnVN.
THJ607NiE6015-G0.10≥1.000.800.0250.030Ni1.2049059015-40℃34Used for welding of steel structures with corresponding strength grades and susceptibility to reheat cracking.
THJ607RHE6015-G0.101.00/1.650.600.0250.025Ni0.65/1.20Mo0.10/0.4049059015-40℃47Used for welding of pressure vessels, bridges, hydroelectric station penstocks, and marine engineering and other important structures.
THJ657RHE6015-G0.121.20/1.800.600.0200.020Ni0.80/1.40Mo0.20/0.4054064015-40℃54Used for welding of X80 grade pipeline steel and low alloy steel structures with the same strength grade.
THJ707E7015-D20.151.65/2.000.600.0250.030Mo0.25/0.4559069015-30℃27Used for welding low alloy steel structures with corresponding strength grades, such as 15MnMoVNd.
THJ707RHE7015-G0.101.20/1.600.30/0.600.0200.025Ni1.40/2.00Mo0.25/0.5059069015-50℃34Used for welding of ship structures, as well as welding of important structures such as high-strength steel.
THJ807E8015-G0.202.000.750.0250.030Mo0.60/1.0069078013At room temperature  27Used for welding low alloy steels with corresponding strength grades such as 14MnMoVN.
THJ807RHE8015-G0.101.30/1.800.500.0200.025Mo0.30/0.60Ni2.00/2.7068578517-40℃69Used for welding important structures made of low alloy steel with corresponding strength grades.
THJ807AE8015-G0.092.000.400.0200.025Mo0.80/1.1069078013-40℃34Welding of corresponding low-strength low alloy steel structures.
THJ857E8515-G0.202.000.750.0200.025Mo0.60/1.0074083012At room temperature 27Used for welding low alloy steel structures with a tensile strength equivalent to 830MPa.
THJ857NiE8515-G0.102.100.750.0150.020Ni2.50/3.0074083012-40℃27Used for welding of low alloy steel structures with tensile strength equivalent to 830MPa.
THJ857CrE8515-g0.151.000.600.0350.035Cr0.70/1.10V0.05/0.15 Mo0.50/1.0074083012-40℃27Used for welding of low alloy steel structures with tensile strength equivalent to 830MPa.
THJ857RE8515-G0.090.80/1.600.500.0150.015Ni2.00/2.80Mo0.30/0.80Cr0.50/1.0074083014-50℃27Used for welding important structures made of low alloy steel with corresponding strength grades.
THJ857RHE8515-G0.090.80/1.600.500.0150.015Ni2.00/2.80Mo0.30/0.80Cr0.50/1.0074083014-50℃27Used for welding important structures made of low alloy steel with corresponding strength grades.
THJ907E9015-G0.201.40/2.000.40/0.800.0200.025Mo0.80/1.2078088012At room temperature 27Used for welding of low alloy high-strength steel structures with tensile strength equivalent to 880MPa.
THJ907RE9015-G0.101.20/1.600.400.0200.025Ni2.40/2.80Mo0.50/0.80Cr0.70/1.00V0.03/0.1278088012-30℃27Used for welding of low alloy high-strength steel with tensile strength equivalent to 880MPa, as well as welding of pressure vessels and other components.
THJ907CrE9015-G0.151.40/2.000.500.0200.025Cr0.70/1.10Mo0.50/1.10V0.05/0.1578098012At room temperature 27Used for welding of low alloy high-strength steel structures with tensile strength equivalent to approximately 880MPa.
THJ957RE9515-G0.101.40/1.800.500.0200.025Ni2.40/3.00Mo0.50/0.80Cr0.70/1.00V0.03/0.1283093012-30℃27Used for welding of low alloy high-strength steel with tensile strength equivalent to 880MPa, as well as pressure vessels and other structures.
THJ107E1005-G0.201.50/2.300.30/0.800.0200.025Mo0.80/1.4088098012At room temperature 27Used for welding of low alloy high-strength steel structures with tensile strength equivalent to 980MPa.
THJ107CrE1005-G0.151.40/2.000.30/0.700.0200.025Cr1.50/2.20Mo0.40/0.80V0.08/0.1688098012At room temperature 27Used for welding of low alloy high-strength structures with tensile strength greater than 980MPa.
THJ107RE10015-G0.101.40/2.000.500.0200.025Ni2.40/3.20Mo0.50/0.80Cr0.70/1.00V0.03/0.1288098012-30℃27Used for welding of low alloy high-strength steel with tensile strength equivalent to 980MPa, as well as pressure vessels and other structures.
V840E9015-G0.090.08/1.600.500.0150.015Mo0.30/0.80Ni2.00/2.80Cr0.50/1.00785_15-50℃27Used for welding of important engineering structures with high strength, high toughness, and yield strength greater than 800MPa.

Low temperature steel welding rod, heat-resistant steel welding rod

GradeModelGBChemical composition of deposited metal (%) (≤)Mechanical properties of deposited metal (≥)Characteristics and applications:
CMnSiSPremainsRel/RP0.2MPaRmMPaA%AKVJ
THR106FeE5018-A10.05/0.120.900.500.0350.035Mo0.40/0.6539049022At room temperature  47Used for welding of heat-resistant ferritic steels such as 15Mo with operating temperatures below 510°C, as well as for welding of general low alloy steels.
THR107E5015-A10.120.900.500.0350.035Mo0.40/0.6539049022At room temperature 47Used for welding of heat-resistant ferritic steels such as 15Mo with operating temperatures below 510°C.
THR202E5503-B10.05/0.120.900.500.0350.035Mo0.40/0.65 Cr0.40/0.6544054016—Used for welding of 15Mo and boiler pipelines with operating temperatures below 510°C.
THR207E5515-B10.05/0.120.900.600.0300.030Mo0.40/0.65 Cr0.40/0.6544054017At room temperature 34Used for welding of heat-resistant ferritic steels such as 12CrMo with operating temperatures below 510°C.
THR307E5515-B20.05/0.120.900.600.0200.030Mo0.40/0.65Cr0.80/1.5044054017At room temperature 47Used for welding of heat-resistant ferritic steels such as 15CrMo with operating temperatures below 520°C.
THR307AE5515-B20.05/0.120.900.600.0150.020Mo0.40/0.65Cr0.80/1.50440540/64020-20℃55Used for welding of heat-resistant ferritic steels such as 12CrMo with operating temperatures below 540°C.
THR317E5515-B2-V0.05/0.120.900.600.0200.035Mo0.40/0.65Cr0.80/1.50V0.10/0.3544054017At room temperature 47Used for welding of heat-resistant ferritic steels such as 12CrMo with operating temperatures below 540°C.
THR317LE5515-B2-V0.05/0.120.900.600.0150.020Mo0.40/0.65Cr0.80/1.50V0.10/0.3544054020At room temperature 47Can be welded without post-heat treatment and used for welding of heat-resistant ferritic steels such as 12CrMo with operating temperatures below 540°C.
THR317B20E6015-G0.05/0.150.70/1.500.800.0250.030Mo0.90/1.30Cr0.90/1.50V0.10/0.3544059015At room temperature 47Used for welding of heat-resistant ferritic steels with Cr-Mo-V composition, such as GS17CrMov511 low alloy cast steel, with operating temperatures below 600°C.
THR337E5515-B2-VNb0.05/0.120.900.600.0250.030Mo0.70/1.00Cr1.00/1.50Nb0.10/0.25V0.15/0.4044054017At room temperature 47Used for welding of heat-resistant ferritic steels such as 15CrMo with operating temperatures below 570°C.
THR347E5515-B3-VWB0.05/0.121.000.600.0300.035Mo0.30/0.80Cr1.50/2.50W0.20/0.60B0.001/0.00344054017At room temperature 47Used for welding of corresponding heat-resistant steels with operating humidity below 620°C.
THR407E6015-B30.05/0.120.900.600.0350.035Cr2.00/2.50Mo0.90/1.2049059015At room temperature 47Used for welding of heat-resistant Cr2.5Mo ferritic steels.
THR417E5515-B3-VNb0.05/0.121.000.600.0350.035Cr2.40/3.00Mo0.70/1.00W0.25/0.50Nb0.35/0.6544054017At room temperature 27Used for welding of corresponding heat-resistant steels with operating humidity below 620°C.
THR507E5MoV-150.120.50/0.900.500.0300.035Cr4.50/6.00Mo0.40/0.70V0.10/0.35—52014—Used for welding of heat-resistant Cr5Mo ferritic steels.
THR717B9—0.08/0.131.250.300.010.01V0.15/0.30Nb0.02/0.10N0.02/0.07Cr8.0/10.5Mo0.85/1.205306201720℃27Used for welding of heat-resistant steel for T91/P91 pipelines and for welding of ZG1Cr10MoVNbN and other steels for supercritical turbines.
THR727E6015-G0.08/0.140.40/1.000.400.010.01Cr8.0/10.0Mo0.30/0.70V0.15/0.30Nb0.02/0.07N0.02/0.075306201520℃27Used for the construction of supercritical and ultra-supercritical coal-fired power plants, such as the welding of heat-resistant steel and steel pipes for T92/P92 pipelines.
THW607—0.071.20/1.700.500.0350.035Ni0.60/1.00Ti0.03B0.00339049022-60℃27Used for welding of low-temperature steel structures, such as 09MnNiN6, which are designed for applications operating at -60℃.
THW707NiE5515-C10.121.250.600.0350.035Ni2.00/2.7544054017-70℃27Used for welding of 09Mn2v06MnVA1 and 3.5Ni steel, which are used for applications operating at -70°C.
THW107Ni—0.08≈0.50.300.0200.020Ni4.00/5.50Mo≈0.30Cu≈0.5034049016-100℃27Welding of 06A1NbCuN06NnNb and 3.5Ni steel, which are used for applications operating at -100°C.

Stainless steel welding rods

 GradeModelGBChemical composition of deposited metal (%)(≤)Mechanical properties of deposited metal (≥)Characteristics and applications: 
CMnSiSPCrNiMoOtherRmMPaA% 
THG202E410-160.121.00.900.0300.04011.0/13.50.70.75Cu0.7545020Used for welding of OCr13 and ICr13 stainless steel structures, and can also be used for overlay welding of corrosion and wear-resistant surfaces. (The deposited and heat-treated samples are heated to 860°C for 2 hours, followed by slow cooling to 600°C, and then air-cooling.) 
THG207DE410-150.121.00.900.0300.03011.0/13.50.70.75Cu0.7552035Mainly used for overlay welding of valve sealing parts. 
THA002E308L-160.040.5/2.50.900.0300.04018.0/21.09.0/11.00.75Cu0.7552035Used for welding of ultra-low carbon 00Cr9Ni11 stainless steel and 00Cr18Ni9 steel structures, such as synthetic fiber, fertilizer, and petroleum equipment. 
THA002RE308L-170.040.5/2.50.900.0300.04018.0/21.09.0/11.00.75Cu0.7552035Mainly used in the manufacturing of equipment for synthetic fibers, fertilizers, petroleum, and other industries. 
THA022E316L-160.040.5/2.50.900.0300.04017.0/20.011.0/14.02.0/3.0Cu0.7549030Primarily used in the manufacturing of equipment for synthetic fiber, fertilizer, and petroleum industries.Also used for welding of equipment for urea and synthetic fiber production, as well as stainless steel structures of the same type. 
THA022Used for applications in cryogenic environments.E316L-160.040.5/2.50.900.0300.04017.0/20.011.0/14.02.0/3.0Cu0.7549030Used for welding of equipment for urea and synthetic fiber production, as well as stainless steel structures of the same type. It can also be used for stainless steel structures used at cryogenic temperatures. 
THA022RE316L-170.040.5/2.50.900.0300.04017.0/20.011.0/14.02.0/3.0Cu0.7549030Used for welding of equipment for urea and synthetic fiber production, as well as stainless steel structures of the same type. 
THA032E317MoCuL-160.040.5/2.50.900.0300.03518.0/21.012.0/14.02.0/2.5Cu0.2054025Used for welding of equipment for synthetic fiber production, such as welding of stainless steel structures of the same type with ultra-low carbon content, which work in dilute to medium concentration sulfuric acid media. 
THA042E309MoL-160.040.5/2.50.900.0300.04022.0/25.012.0/14.02.0/3.0Cu0.7554025Used for welding of stainless steel structures of the same type with ultra-low carbon content, as well as for welding of dissimilar steels. 
THA052—0.042.001.000.0300.04017.0/22.022.0/27.04.0/5.0Cu2.049025Used for welding reactors, separators, and other equipment that are chemically resistant to sulfuric acid, acetic acid, phosphoric acid, as well as for welding of corrosion-resistant steel used in seawater environments. 
THA062E309L-160.040.5/2.50.900.0300.04022.0/25.012.0/14.00.75Cu0.7552025Used for welding stainless steel structures of the same type, composite steel, and dissimilar steels in the manufacturing of equipment for synthetic fiber, petroleum, chemical, and other industries. 
THA072—0.041.0/2.00.800.0300.03027.0/29.014.0/16.0——54025Used for welding of 00Cr25Ni20Nb steel, such as nuclear fuel equipment, and so on. 
THA092E385-160.031.0/2.50.750.0200.03019.5/21.524.0/26.04.2/5.2Cu1.2/2.052030Mainly used in the manufacturing of towers, tanks, pipelines, heat exchangers, and other equipment. It has excellent resistance to pitting corrosion in various strong acids and hot acids. 
THA102E308-160.080.5/2.50.900.0300.04018.0/21.09.0/11.00.75Cu0.7555035Used for welding of corrosion-resistant stainless steel structures such as Cr19Ni9 and OCr19Ni11Ti, which operate at temperatures below 300℃. 
THA102Used for applications in cryogenic environments.E308-160.080.5/2.50.900.0300.04018.0/21.09.0/11.00.75Cu0.75620（Example values:）42（Example values）Used for welding of corrosion-resistant stainless steel structures such as Cr19Ni9 and OCr19Ni11Ti, which operate at temperatures below 300°C. It can also be used for stainless steel structures used in cryogenic environments. 
-196℃（Example values）AKJ45J 
THA102B（Example values）E308-160.052.500.800.0150.01618.5010.500.15—56038Mainly used for welding of structures with low magnetic permeability or non-magnetic steel. 
THA102RE308-160.080.5/2.50.900.0300.04018.0/21.09.0/11.00.75Cu0.7555035Used for welding of corrosion-resistant stainless steel structures such as 0Cr19Ni9 and 0Cr19Ni11Ti, which operate at temperatures below 300°C. 
THA107E308-150.080.5/2.50.900.0300.04018.0/21.09.0/11.00.75Cu0.7555035Used for welding of corrosion-resistant 0Cr19Ni9 stainless steel structures operating at temperatures below 300°C. It can also be used for welding some steels with poor weldability and for overlay welding of stainless steel surface layers. 
THA112—0.122.501.500.0350.04017.0/22.07.0/11.0——54025Used for welding of Cr19Ni9 stainless steel structures with general corrosion resistance requirements. 
THA117—0.122.501.500.0300.04017.0/22.07.0/11.0——54025Used for welding of Cr18Ni9 stainless steel structures with general corrosion resistance requirements. 
THA122—0.082.501.500.0300.04020.0/24.07.0/11.0——54025Used for welding of OCr19Ni9 stainless steel structures with high resistance to cracking and corrosion, operating at temperatures below 300°C. 
THA132E347-160.080.5/2.50.900.0300.04018.0/21.09.0/11.00.75Cu0.75 Nb8×C- 1.0052025Used for welding of important corrosion-resistant OCr19Ni11Ti stainless steel structures containing titanium stabilizer. 
THA132RE347-170.080.5/2.50.900.0300.04018.0/21.09.0/11.00.75Cu0.75Nb8×C- 1.0052025Used for welding of important corrosion-resistant 0Cr19Ni11Ti stainless steel containing titanium stabilizer. 
THA137E347-150.080.5/2.50.900.0300.04018.0/21.09.0/11.00.75Cu0.75 Nb8×C- 1.0052025Used for welding of important corrosion-resistant OCr19Ni11Ti stainless steel structures containing titanium stabilizer. 
THA 146—0.124.0/7.00.900.0350.04019.0/22.08.0/11.0——54020Used for welding of important corrosion-resistant OCr20Ni10Mn6 stainless steel containing titanium stabilizer.  
 
THA172E307-160.04/0.143.30/4.750.900.0300.04018.0/21.59.0/10.70.5/1.5Cu0.7559030Suitable for welding of ASTM307 steel and other dissimilar steels. It can also be used for overlay welding of impact-resistant corrosion-resistant steel and transition layers. 
THA202E316-160.080.5/2.50.090.0300.04017.0/20.011.0/14.02.0/3.0Cu0.7552030Used for welding of OCr18Ni2Mo2 stainless steel structures and dissimilar steel structures that work in organic and inorganic acid media. 
THA202RE316-170.080.5/2.50.900.0300.04017.0/20.011.0/14.02.0/3.0Cu0.7552030Used for welding of 0Cr18Ni12Mo2 stainless steel that works in organic and inorganic acid media or as a dissimilar steel weld. 
THA207E316-150.080.5/2.50.900.0300.04017.0/20.011.0/14.02.0/3.0Cu0.7552030Used for welding of low carbon OCr18Ni12Mo2 stainless steel structures, high-chromium acid-resistant steel, and dissimilar steels. 
THA 212E318-160.080.5/2.50.900.0300.04017.0/20.011.0/14.02.0/3.0Nb6×C/1.0055025Used for welding of critical components of stainless steel equipment such as urea synthesis towers and vinyl equipment, which are in contact with strong corrosive media. 
THA222E317MoCu-160.080.5/2.5.0.900.0300.03518.0/21.012.0/14.02.0/2.5Cu2.054025Used for welding of stainless steel structures of the same type containing copper, such as 0Cr18Ni12Mo2Cu. 
THA232E318V-160.080.5/2.50.900.0300.03517.0/20.011.0/14.02.0/2.5Cu0.5V0.30/0.7054025Used for welding of general heat-resistant and corrosion-resistant stainless steel structures, such as Cr19Ni10 and Cr18Ni12Mo2. 
THA237E318V-150.080.5/2.50.900.0300.03517.0/20.011.0/14.02.0/2.5Cu0.5V0.30/0.7054025Used for multi-layer welding of general heat-resistant and corrosion-resistant stainless steel structures, such as Cr19Ni10 and Cr18Ni12Mo2. 
THA242E317-160.080.5/2.50.900.0300.04022.0/25.012.0/14.03.0/4.0Cu0.7555025Used for welding of stainless steel materials of the same type, as well as composite steel and dissimilar steels. 
THA302E309-160.150.5/2.50.900.0300.04022.0/25.012.0/14.00.75Cu0.7555025Used for welding of stainless steel structures of the same type, as well as dissimilar steels, high-chromium steel, high-manganese steel, and others. 
THA302RE309-170.150.5/2.50.900.0300.04022.0/25.012.0/14.00.75Cu0.7555025Used for welding of stainless steel of the same type, stainless steel cladding, dissimilar steels, as well as high-alloy steel and high-manganese steel. 
THA307E309-150.150.5/2.50.900.0300.04022.0/25.012.0/14.00.75Cu0.7555025Used for welding of stainless steel structures of the same type, as well as for welding of dissimilar steels such as high-chromium steel and high-manganese steel. 
THA312E309Mo-160.120.5/2.50.900.0300.04022.0/25.012.0/14.02.0/3.0Cu0.7555025Used for welding of stainless steel containers of the same type that are resistant to sulfuric acid media (sulfur-ammonia) corrosion, as well as for welding of composite steel dissimilar steels. 
THA402E310-160.08/0.201.0/2.50.750.0300.03025.0/28.020.0/22.50.75Cu0.7555025Used for welding of heat-resistant stainless steels of the same type operating under high-temperature conditions. It can also be used for welding of high-hardness chromium steels (Cr13) and dissimilar steels. 
THA407E310-150.08/0.201.0/2.50.750.0300.03025.0/28.020.0/22.50.75Cu0.7555025Used for welding of heat-resistant stainless steels of the same type operating under high-temperature conditions. It can also be used for welding of high-hardness chromium steels and dissimilar steels. 
THA412E310Mo-160.121.0/2.50.750.0300.03025.0/28.020.0/22.02.0/3.0Cu0.7555025Used for welding of heat-resistant stainless steels of the same type and dissimilar steels, as well as stainless steel cladding, operating under high-temperature conditions. 
THA502E16-25MoN-160.120.5/2.50.900.0300.035140./18.022.0/27.05.0/7.0Cu0.50N≥0.142030Used for welding of low alloy, medium alloy, and dissimilar steels in a quenched state, such as 30CrMnSi, as well as stainless steel and carbon steel welding. 
THA507E16-2MoN-150.120.5/2.50.900.0300.03514.0/18.022.0/27.05.0/7.0Cu0.50N≥0.142030Used for welding of low alloy, medium alloy, and dissimilar steels in a quenched state, such as 30CrMnSi, as well as stainless steel and carbon steel welding. 
THA802 —0.102.51.000.0300.03518.0/21.017.0/19.03.0/5.0Cu1.5/2.554025Used for welding pipelines of synthetic rubber manufactured with a sulfuric acid concentration of 50% and certain working temperatures and pressures, as well as steel grades such as Cr18Ni18Mo2Cu2Ti. 
THAF312E312-160.150.5/2.50.900.0300.04028.0/32.08.0/10.50.75Cu0.7566022Can be used for welding of high carbon steel, tool steel, high temperature steel, armor steel, dissimilar steels, and more. 
THAF2209E2209-160.040.5/2.00.900.0300.04021.5/23.58.5/10.52.5/3.5N0.08/0.20Cu0.7569020Suitable for welding of super low carbon stainless steel materials in the petrochemical and chemical industries. 

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Shane
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Shane

Founder of MachineMFG

As the founder of MachineMFG, I have dedicated over a decade of my career to the metalworking industry. My extensive experience has allowed me to become an expert in the fields of sheet metal fabrication, machining, mechanical engineering, and machine tools for metals. I am constantly thinking, reading, and writing about these subjects, constantly striving to stay at the forefront of my field. Let my knowledge and expertise be an asset to your business.

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