Which Is Better, 06Cr19Ni10 or 304?

1. Which is better, 06Cr19Ni10 or 304?

06Cr19Ni10 and 304 are commonly used stainless steel materials.

In terms of application, there are few differences between 06Cr19Ni10 and 304.

If there are requirements for the implementation standards of materials, you should pay attention to the difference between 06Cr19Ni10 and 304: 06Cr19Ni10 is the national standard material brand, and 304 is the American standard material brand, and the corresponding implementation standards are different.

The similarities and differences between 06Cr19Ni10 and 304 are listed below for your reference.

2. Differences between 06Cr19Ni10 and 304

Which Is Better, 06Cr19Ni10 or 304? 1

1. 06Cr19Ni10 and 304 are based on different standards.

06Cr19Ni10 is the national standard stainless steel grade, 304 is the American standard stainless steel grade.

2. 06Cr19Ni10 is slightly different from 304 in chemical composition.

There are slight differences between the two in the content requirements of individual elements (such as chromium and sulfur). (See Attached Table 1 below)

3. The UNS codes of 06Cr19Ni10 and 304 are different (understand: UNS).

The number corresponding to 06Cr19Ni10 is S30408304, and the number corresponding to 06Cr19Ni10 is S30400.

3. The same points of 06Cr19Ni10 and 304

1. 06Cr19Ni10 and 304 are both 18-8 alloys (understand the metallographic structure of stainless steel), which can be used in most corrosion environments and are resistant to medium oxidation (and weak reduction) environments.

2. 06Cr19Ni10 and 304 are widely used in food, fresh water, household products, industrial products, etc.

3. The density of 06cr19i10 and 304 is 7.93g/cm3. (Understand: What is the density of stainless steel?)

4. The mechanical properties of 06Cr19Ni10 and 304 are almost the same. (See Attached Table 2 below)

5. The carbon content of 06Cr19Ni10 and 304 is about 0.08%.

In the welding state, their performance is not as good as their corresponding low C materials (022Cr19Ni10 and 304L respectively).

Table 1: Chemical Composition Differences between 06Cr19Ni10 and 304

UNS number codeBrandCarbonManganeseP PhosphorusSulfurSiliconChromiumNickel
S3040806Cr19Ni100.082.000.0350.0150.7518.0-20.08.0-10.5
S304003040.072.000.0450.030.7517.5-19.58.0-10.5

Note:

  • 1. This table is a comparison of the two components, and the data is derived from the national standard GB/T24511-2017; American standard ASTM A240M-15a;
  • 2. The data unit is percentage, i.e. “%”;
  • 3. Except for the indicated range, the components listed in this table are the maximum values.

Table 2: Differences between 06Cr19Ni10 and 304 mechanical properties

Brand

Specified plastic extension strength Rpo. 2/MPa

Specified plastic extension strength RP1.0/MPa

Tensile strength Rm/MPa

Elongation after fracture A%

Hardness value

 

 

 

 

 

HBW

HRB

HV

 

Not less than

Not more than

06Cr19Ni10

220

250

.520

40

201

92

210

Data source: GB/T24511-2017 Stainless and Heat Resisting Steel Plates and Strips for Pressure Equipment

304 Stainless Steel Mechanical Test Requirements

Brand

Yield Strength

TensileStrength

Elongation in 2 in or 50mm. min.% elongation

Hardness, max

 

Mpa

Mpa

 

Brinell.HBW

Rockwell

304

205

515

40

201

92 HRBW

Data source: ASTM A240/A240-15a Specification for Chromium and Chromium Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels and General Applications

Which is better between 06Cr19Ni10 and 304, and the difference between 06Cr19Ni10 and 304. I believe you have understood the relationship between 06Cr19Ni10 and 304.

In a broad sense, both 06Cr19Ni10 and 304 can be called “304 stainless steel”;

In a narrow sense, 06Cr19Ni10 is not exactly the same as 304.

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