Chemical Composition of Aluminum Alloys: Secrets Revealed

What Is Aluminum Alloys? Aluminum-based alloys, supplemented with a certain amount of other alloying elements, are one of the light metal materials. In addition to the general characteristics of aluminum, these alloys have specific properties due to the type and amount of alloying elements added. The density of the aluminum alloy is 2.63~2.85g/cm3, and it […]

Chemical Composition of Aluminum Alloys Secrets Revealed

Table Of Contents

What Is Aluminum Alloys?

Aluminum-based alloys, supplemented with a certain amount of other alloying elements, are one of the light metal materials.

In addition to the general characteristics of aluminum, these alloys have specific properties due to the type and amount of alloying elements added. The density of the aluminum alloy is 2.63~2.85g/cm3, and it has a high strength (σb is 110~650MPa), almost equal to that of high-alloy steel.

Chemical Composition of Aluminum Alloys Secrets Revealed

Its rigidity surpasses steel, and it has excellent casting and plastic processing performance, good electrical and thermal conductivity, corrosion resistance, and weldability.

It can be used as a structural material and is widely used in aerospace, aviation, transportation, construction, mechanical and electrical engineering, lightweighting, and daily necessities.

Chemical Composition Table of Aluminum Alloy

Note:

  1. When used for welding rods and surfacing, the beryllium content should not exceed 0.0008%.
  2. The beryllium content is added as specified and does not require analysis.
  3. Only when agreed upon by both the supplier and the consumer, the Ti+Zr content in extruded and forged products should not exceed 0.20%.
  4. The zinc content of the 3A21 alloy used for rivet wire should not exceed 0.03%.
  5. Only when agreed upon by both the supplier and the consumer, the Ti+Zr content in extruded and forged products should not exceed 0.25%.
GradeChemical composition%
SiFeCuMnMgCrNiZnNoteTiZrOthersAlNote
singletotal
1A990.003 0.003 0.005 0.00299.99 LG5
1A970.015 0.015 0.005 0.00599.97 LG4
1A950.030 0.030 0.010 0.00599.95 
1A930.040 0.040 0.010 0.00799.93 LG3
1A900.060 0.060 0.010 0.0199.90 LG2
1A850.080 0.100 0.010 0.0199.85 LG1
1A800.150 0.150 0.030 0.020 0.020 0.030 Ca:0.03, V:0.050.030 0.0299.80 
180A0.150 0.150 0.030 0.020 0.020 0.060 Ca:0.030.020 0.0299.80 
10700.200 0.250 0.040 0.030 0.030 0.040 V:0.050.030 0.0399.70 
1070A0.200 0.250 0.030 0.030 0.030 0.070 0.030 0.0399.70 L1
13700.100 0.250 0.020 0.010 0.020 0.010 0.040 Ca:0.03,V+Ti:0.02,B:0.020.020.10 99.70 
10600.250 0.350 0.050 0.030 0.030 0.050 V:0.050.030 0.0399.60 L2
10500.250 0.400 0.050 0.050 0.050 0.050 V:0.050.030 0.0399.50 
1050A0.250 0.400 0.050 0.050 0.050 0.070 0.050 0.0399.50 
1A500.300 0.300 0.010 0.050 0.050 0.030 Fe+Si:0.450.0399.50 LB2
13500.100 0.400 0.050 0.010 0.010 0.050 Ca:0.03,V+Ti:0.02,B:0.050.030.10 99.50 
1145Si+Fe:0.550.050 0.050 0.050 0.050 V:0.050.030 0.0399.45 
10350.350 0.600 0.100 0.050 0.050 0.100 V:0.050.030 0.0399.35 L4
1A300.10-0.200.15-0.300.050 0.010 0.010 0.010 0.020 0.020 0.0399.30 L4-1
1100Si+Fe:0.950.05-0.20.050 0.100 0.050.15 99.00 L5-1
1200Si+Fe:1.000.050 0.050 0.100 0.050 0.050.15 99.00 L5
1235Si+Fe:0.650.050 0.050 0.050 0.100 V:0.050.060 0.0399.35 
2A010.500 0.500 2.2-3.00.200 0.20-0.500.100 0.150 0.050.10 remainedLY1
2A020.300 0.300 2.6-3.20.45-0.72.0-2.40.100 0.150 0.050.10 remainedLY2
2A040.300 0.300 3.2-3.70.50-0.82.1-2.60.100 Be:0.001-0.01②0.05-0.400.050.10 remainedLY4
2A060.500 0.500 3.8-4.30.50-1.01.7-2.30.100 Be:0.001-0.005②0.03-0.150.050.10 remainedLY6
2A100.250 0.200 3.9-4.50.30-0.500.15-0.300.100 0.150 0.050.10 remainedLY10
2A110.700 0.700 3.8-4.80.40-0.80.40-0.80.010 0.300 Fe+Ni:0.70.150 0.050.10 remainedLY11
2B110.500 0.500 3.8-4.50.40-0.80.40-0.80.100 0.150 0.050.10 remainedLY8
2A120.500 0.500 3.8-4.90.30-0.91.2-1.80.010 0.300 Fe+Ni:0.500.150 0.050.10 remainedLY12
2B120.500 0.500 3.8-4.50.3-0.71.2-1.60.100 0.150 0.050.10 remainedLY9
2A130.700 0.600 4.0-5.00.30-0.500.600 0.150 0.050.10 remainedLY13
2A140.6-1.20.700 3.9-4.80.4-1.00.40-0.80.100 0.300 0.150 0.050.10 remainedLD10
2A160.300 0.300 6.0-7.00.4-0.80.050 0.100 0.10-0.200.200 0.050.10 remainedLY16
2B160.250 0.300 5.8-6.80.2-0.40.050 V:0.05-0.150.08-0.200.10-0.250.050.10 remainedLY16-1
2A170.300 0.300 6.0-7.00.4-0.80.25-0.450.100 0.10-0.200.050.10 remainedLY17
2A200.200 0.300 5.8-6.80.020 0.100 V:0.05-0.15 B:0.001-0.010.07-0.160.10-0.250.050.15 remainedLY20
2A210.200 0.20-0.63.0-4.00.050 0.8-1.21.8-2.30.200 0.050 0.050.15 remained
2A250.060 0.060 3.6-4.20.50-0.71.0-1.50.060 0.050.10 remained
2A490.250 0.8-1.23.2-3.80.30-0.61.8-2.20.8-1.20.08-0.120.050.15 remained
2A500.7-1.20.700 1.8-2.60.40-0.80.40-0.80.100 0.300 Fe+Ni:0.70.150 0.050.10 remainedLD5
2B500.7-1.20.700 1.8-2.60.40-0.80.40-0.80.01-0.200.100 0.300 Fe+Ni:0.70.02-0.100.050.10 remainedLD6
2A700.350 0.9-1.51.9-2.50.200 1.4-1.80.9-1.50.300 0.02-0.100.050.10 remainedLD7
2B700.250 0.9-1.41.8-2.70.200 1.2-1.80.8-1.40.150 Pb:0.05 Sn:0.05 Ti+Zr:0.200.100 0.050.15 remained
2A800.50-1.21.0-1.61.9-2.50.200 1.4-1.80.9-1.50.300 0.150 0.050.10 remainedLD8
2A900.50-1.00.50-1.03.5-4.50.200 0.40-0.81.8-2.30.300 0.150 0.050.10 remainedLD9
20040.200 0.200 5.5-6.50.100 0.500 0.100 0.050 0.3-0.500.050.15 remained
20110.400 0.700 5.0-6.00.300 Bi:0.20-0.60 Pb:0.20-0.60.050.15 remained
20140.50-1.20.700 3.9-5.00.40-1.20.20-0.80.100 0.250 0.150 0.050.15 remained
2014A0.50-0.90.500 3.9-5.00.40-1.20.20-0.80.100 0.100 0.250 Ti+Zr:0.200.150 0.050.15 remained
22140.50-1.20.300 3.9-5.00.40-1.20.20-0.80.100 0.250 0.150 0.050.15 remained
20170.20-0.80.700 3.5-4.50.40-1.00.40-0.80.100 0.250 0.150 0.050.15 remained
2017A0.20-0.80.700 3.5-4.50.40-1.00.40-1.00.100 0.250 Ti+Zr:0.250.050.15 remained
21170.800 0.700 2.2-3.00.200 0.20-0.500.100 0.250 0.050.15 remained
22180.900 1.000 3.5-4.50.200 1.2-1.80.100 1.7-2.30.250 0.050.15 remained
26180.10-0.250.9-1.31.9-2.71.3-1.80.9-1.20.100 0.04-0.100.050.15 remained
22190.200 0.300 5.8-6.80.20-0.400.020 0.100 V:0.05-0.150.20-0.100.10-0.250.050.15 remainedLY19
20240.500 0.500 3.8-4.90.30-0.91.2-1.80.100 0.250 0.150 0.050.15 remained
21240.200 0.300 3.9-4.90.30-0.91.2-1.80.100 0.250 0.150 0.050.15 remained
3A210.600 0.700 0.200 1.0-1.60.050 0.10④0.150 0.050.10 remainedLF21
30030.600 0.700 0.05-0.201.0-1.50.100 0.050.15 remained
31030.500 0.700 0.100 0.9-1.50.300 0.100 0.200 Ti+Zr:0.100.050.15 remained
30040.300 0.700 0.250 1.0-1.50.8-1.30.250 0.050.15 remained
30050.600 0.700 0.250 1.0-1.50.20-0.60.100 0.250 0.100 0.050.15 remained
31050.600 0.700 0.300 0.30-0.80.20-0.80.200 0.400 0.100 0.050.15 remained
4A014.5-6.00.600 0.200 Zn+Sn:0.100.150 0.050.15 remainedLT1
4A1111.5-13.51.000 0.50-1.30.200 0.8-1.30.100 0.50-1.30.250 0.150 0.050.15 remainedLD11
4A136.8-8.20.500 Cu+Zn:0.150.500 0.050 Ca:0.100.150 0.050.15 remainedLT13
4A1711.0-12.50.500 Cu+Zn:0.150.500 0.050 Ca:0.100.150 0.050.15 remainedLT17
40049.0-10.50.800 0.250 0.100 1.0-2.00.200 0.050.15 remained
403211.0-13.51.000 0.50-1.30.8-1.30.100 0.50-1.30.250 0.050.15 remained
40434.5-6.00.800 0.300 0.050 0.050 0.100 0.200 0.050.15 remained
4043A4.5-6.00.600 0.300 0.150 0.200 0.100 0.150 0.050.15 remained
404711.0-13.00.800 0.300 0.150 0.100 0.200 0.050.15 remained
4047A11.0-13.00.600 0.300 0.150 0.100 0.200 0.150 0.050.15 remained
5A01Si+Fe:0.400.100 0.30-0.76.0-7.00.10-0.200.250 0.150 0.10-0.200.050.15 remainedLF15
5A020.400 0.400 0.100 或Cr0.15-0.402.0-2.8Si+Fe:0.60.150 0.050.15 remainedLF21
5A030.50-0.80.500 0.100 0.30-0.63.2-3.80.200 0.150 0.050.10 remainedLF3
5A050.500 0.500 0.100 0.30-0.64.8-5.50.200 0.050.10 remainedLF5
5B050.400 0.400 0.200 0.20-0.64.7-5.7Si+Fe:0.60.150 0.050.10 remainedLF10
5A060.400 0.400 0.100 0.50-0.85.8-6.80.200 Be:0.0001-0.005②0.02-0.100.050.10 remainedLF6
5B060.400 0.400 0.100 0.50-0.85.8-6.80.200 Be:0.0001-0.005②0.10-0.300.050.10 remainedLF14
5A120.300 0.300 0.050 0.40-0.88.3-9.60.100 0.200 Be:0.005,Sb:0.004-0.050.05-0.150.050.10 remainedLF12
5A130.300 0.300 0.050 0.40-0.89.2-10.50.100 0.200 Be:0.005,Sb:0.004-0.050.05-0.150.050.10 remainedLF13
5A30Si+Fe:0.400.100 0.50-1.04.7-5.50.250 Cr:0.05-0.200.03-0.150.050.10 remainedLF16
5A330.350 0.350 0.100 0.100 6.0-7.50.50-1.5Be:0.0005-0.005②0.05-0.150.10-0.300.050.10 remainedLF33
5A410.400 0.400 0.100 0.30-0.66.0-7.00.200 0.02-0.100.050.10 remainedLT41
5A430.400 0.400 0.100 0.15-0.400.6-1.40.150 0.050.15 remainedLF43
5A660.005 0.010 0.005 1.5-2.00.0050.01 remainedLT66
50050.300 0.700 0.200 0.200 0.50-1.10.100 0.250 0.050.15 remained
50190.400 0.500 0.100 0.1-0.64.5-5.60.200 0.200 Mn+Cr:0.10-0.60.200 0.050.15 remained
50500.400 0.700 0.200 0.100 1.1-1.80.100 0.250 0.050.15 remained
52510.400 0.500 0.150 0.1-0.51.7-2.40.150 0.150 0.150 0.050.15 remained
50520.250 0.400 0.100 0.100 2.2-2.80.15-0.350.100 0.050.15 remained
51540.250 0.400 0.100 0.100 3.1-3.90.15-0.350.200 0.200 0.050.15 remained
5154A0.500 0.500 0.100 0.500 3.1-3.90.250 0.200 ①Mn+Cr:0.10-0.500.200 0.050.15 remained
54540.250 0.400 0.100 0.50-1.02.4-3.00.05-0.20.250 0.200 0.050.15 remained
55540.250 0.400 0.100 0.50-1.02.4-3.00.05-0.200.250 0.05-0.200.050.15 remained
57540.400 0.400 0.100 0.500 2.6-3.60.300 0.200 Mn+Cr:0.10-0.60.150 0.050.15 remained
50560.300 0.400 0.100 0.05-0.204.5-5.60.05-0.200.100 0.050.15 remainedLF5-1
53560.250 0.400 0.100 0.05-0.204.5-5.50.05-0.200.100 0.06-0.200.050.15 remained
54560.250 0.400 0.100 0.50-1.04.7-5.50.05-0.200.250 0.200 0.050.15 remained
50820.200 0.350 0.150 0.150 4.0-5.00.150 0.250 0.100 0.050.15 remained
51820.200 0.350 0.150 0.20-0.504.0-5.00.100 0.250 0.100 0.050.15 remained
50830.400 0.400 0.100 0.40-1.04.0-4.90.05-0.250.250 0.150 0.050.15 remainedLF4
51830.400 0.400 0.100 0.5-1.04.3-5.20.05-0.250.250 0.150 0.050.15 remained
50860.400 0.500 0.100 0.20-0.73.5-4.50.05-0.250.250 0.150 0.050.15 remained
6A020.50-1.20.500 0.20-0.6或Cr0.15-0.350.45-0.90.200 0.150 0.050.10 remainedLD2
6B020.7-1.10.400 0.10-0.400.10-0.300.40-0.80.150 0.01-0.040.050.10 remainedLD2-1
6A510.50-0.70.500 0.15-0.350.45-0.60.250 Sn:0.15-0.350.01-0.040.050.15 remained
61010.30-0.70.500 0.100 0.030 0.35-0.80.030 0.100 B:0.060.030.10 remained
6101A0.30-0.70.400 0.050 0.40-0.90.030.10 remained
60050.6-0.90.350 0.100 0.100 0.40-0.60.100 0.100 0.100 0.050.15 remained
6005A0.50-0.90.350 0.300 0.500 0.40-0.70.300 0.200 Mn+Cr:0.12-0.500.100 0.050.15 remained
63510.7-1.30.500 0.100 0.40-0.80.40-0.80.200 0.200 0.050.15 remained
60600.30-0.60.10-0.300.100 0.100 0.35-0.60.050 0.150 0.100 0.050.15 remained
60610.40-0.80.700 0.15-0.400.150 0.8-1.20.04-0.350.250 0.150 0.050.15 remainedLD30
60630.20-0.60.350 0.100 0.100 0.45-0.90.100 0.100 0.100 0.050.15 remainedLD31
6063A0.30-0.60.15-0.350.100 0.150 0.6-0.90.050 0.150 0.100 0.050.15 remained
60701.0-1.70.500 0.15-0.400.40-1.00.50-1.20.100 0.250 0.150 0.050.15 remainedLD2-2
61810.8-1.20.450 0.100 0.150 0.6-1.00.100 0.200 0.100 0.050.15 remained
60820.7-1.30.500 0.100 0.40-1.00.6-1.20.250 0.200 0.100 0.050.15 remained
7A010.300 0.300 0.010 0.9-1.3Si+Fe:0.450.03remainedLB1
7A030.200 0.200 1.8-2.40.100 1.2-1.60.050 6.0-6.70.02-0.080.050.10 remainedLC3
7A040.500 0.500 1.4-2.00.20-0.61.8-2.80.10-0.255.0-7.00.100 0.050.10 remainedLC4
7A050.250 0.250 0.200 0.15-0.401.1-1.70.05-0.154.4-5.00.02-0.060.10-0.250.050.15 remained
7A090.500 0.500 1.2-2.00.150 2.0-3.00.16-0.305.1-6.10.100 0.050.10 remainedLC9
7A100.300 0.300 0.50-1.00.20-0.353.0-4.00.10-0.203.2-4.20.100 0.050.10 remainedLC10
7A150.500 0.500 0.5-1.00.10-0.402.4-3.00.10-0.304.4-5.4Be:0.005-0.010.05-0.150.050.15 remainedLC15
7A190.300 0.400 0.08-0.300.3-0.51.3-1.90.10-0.204.5-5.3Be:0.0001-0.004②0.08-0.200.050.15 remainedLC19
7A310.300 0.600 0.10-0.400.20-0.402.5-3.30.10-0.203.6-4.5Be:0.0001-0.001②0.02-0.100.08-0.250.050.15 remained
7A330.250 0.300 0.25-0.550.050 2.2-2.70.15-0.204.6-5.40.050 0.050.10 remained
7A520.250 0.300 0.05-0.20.20-0.502.0-2.80.15-0.254.0-4.80.05-0.180.05-0.150.050.15 remainedLC52
70030.300 0.350 0.200 0.300 0.50-1.00.200 5.0-6.50.200 0.05-0.250.050.15 remainedLC12
70050.350 0.400 0.100 0.20-0.71.0-1.80.06-0.204.0-5.00.01-0.060.08-0.200.050.15 remained
70200.350 0.400 0.200 0.05-0.501.0-1.40.10-0.354.0-5.0Zr+Ti:0.08-0.250.08-0.200.050.15 remained
70220.500 0.500 0.50-1.00.10-0.402.6-3.70.10-0.304.3-5.2Zr+Ti:0.200.050.15 remained
70500.120 0.150 2.0-2.60.100 1.9-2.60.040 5.7-6.70.060 0.08-0.150.050.15 remained
70750.400 0.500 1.2-2.00.300 2.1-2.90.18-0.285.1-6.10.200 0.050.15 remained
74750.100 0.120 1.2-1.90.060 1.9-2.60.18-0.255.2-6.20.060 0.050.15 remained
8A060.550 0.500 0.100 0.100 0.100 0.100 Fe+Si:1.00.050.15 remained
80110.50-0.90.6-1.00.100 0.200 0.050 0.050 0.100 0.080 0.050.15 remained
80900.200 0.300 1.0-1.60.100 0.6-1.30.100 0.250 Li:2.2-2.70.100 0.04-0.160.050.15 remained
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Shane
Author

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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