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Wrought alloys



The International Alloy Designation System is the most widely accepted naming scheme for wrought alloys. Each alloy is given a four-digit number, where the first digit indicates the major alloying elements.

  • 1000 series are essentially pure aluminium with a minimum 99% aluminium content by weight and can be work hardened.
  • 2000 series are alloyed with copper, can be precipitation hardened to strengths comparable to steel. Formerly referred to as duralumin, they were once the most common aerospace alloys, but were susceptible to stress corrosion cracking and are increasingly replaced by 7000 series in new designs.
  • 3000 series are alloyed with manganese, and can be work hardened.
  • 4000 series are alloyed with silicon. They are also known as silumin.
  • 5000 series are alloyed with magnesium.
  • 6000 series are alloyed with magnesium and silicon, are easy to machine, and can be precipitation hardened, but not to the high strengths that 2000 and 7000 can reach.
  • 7000 series are alloyed with zinc, and can be precipitation hardened to the highest strengths of any aluminium alloy.
  • 8000 series is a category mainly used for lithium alloys.

Wrought aluminium alloy composition limits (% weight)

Alloy

Si

Fe

Cu

Mn

Mg

Cr

Zn

V

Ti

Bi

Ga

Pb

Zr

Limits††

Al

Each

Total

1050[7]

0.25

0.40

0.05

0.05

0.05

 

 

0.05

 

 

 

 

 

0.03

 

99.5 min

1060

0.25

0.35

0.05

0.03

0.03

0.03

0.05

0.05

0.03

0.03

0.03

0.03

0.03

0.03

 

99.6 min

1100

0.95 Si+Fe

0.05每

0.20

0.05

 

 

0.10

 

 

 

 

 

 

0.05

0.15

99.0 min

1199[7]

0.006

0.006

0.006

0.002

0.006

 

0.006

0.005

0.002

 

0.005

 

 

0.002

 

99.99 min

2014

0.50每1.2

0.7

3.9每5.0

0.40每1.2

0.20每0.8

0.10

0.25

 

0.15

 

 

 

 

0.05

0.15

remainder

2024

0.50

0.50

3.8每4.9

0.30每0.9

1.2每1.8

0.10

0.25

 

0.15

 

 

 

 

0.05

0.15

remainder

2219

0.2

0.30

5.8每6.8

0.20每0.40

0.02

 

0.10

0.05每0.15

0.02每0.10

 

 

 

0.10每0.25

0.05

0.15

remainder

3003

0.6

0.7

0.05每0.20

1.0每1.5

 

 

0.10

 

 

 

 

 

 

0.05

0.15

remainder

3004

0.30

0.7

0.25

1.0每1.5

0.8每1.3

 

0.25

 

 

 

 

 

 

0.05

0.15

remainder

3102

0.40

0.7

0.10

0.05每0.40

 

 

0.30

 

0.10

 

 

 

 

0.05

0.15

remainder

4043

4.5每6.0

0.80

0.30

0.05

0.05

 

0.10

 

0.20

 

 

 

 

0.05

0.15

remainder

5052

0.25

0.40

0.10

0.10

2.2每2.8

0.15每0.35

0.10

 

 

 

 

 

 

0.05

0.15

remainder

5083

0.40

0.40

0.10

0.40每1.0

4.0每4.9

0.05每0.25

0.25

 

0.15

 

 

 

 

0.05

0.15

remainder

5086

0.40

0.50

0.10

0.20每0.7

3.5每4.5

0.05每0.25

0.25

 

0.15

 

 

 

 

0.05

0.15

remainder

5154

0.25

0.40

0.10

0.10

3.10每3.90

0.15每0.35

0.20

 

0.20

 

 

 

 

0.05

0.15

remainder

5356

0.25

0.40

0.10

0.10

4.50每5.50

0.05每0.20

0.10

 

0.06每0.20

 

 

 

 

0.05

0.15

remainder

5454

0.25

0.40

0.10

0.50每1.0

2.4每3.0

0.05每0.20

0.25

 

0.20

 

 

 

 

0.05

0.15

remainder

5456

0.25

0.40

0.10

0.50每1.0

4.7每5.5

0.05每0.20

0.25

 

0.20

 

 

 

 

0.05

0.15

remainder

5754

0.40

0.40

0.10

0.50

2.6每3.6

0.30

0.20

 

0.15

 

 

 

 

0.05

0.15

remainder

6005

0.6每0.9

0.35

0.10

0.10

0.40每0.6

0.10

0.10

 

0.10

 

 

 

 

0.05

0.15

remainder

6005A

0.50每0.9

0.35

0.30

0.50

0.40每0.7

0.30

0.20

 

0.10

 

 

 

 

0.05

0.15

remainder

6060

0.30每0.6

0.10每0.30

0.10

0.10

0.35每0.6

0.05

0.15

 

0.10

 

 

 

 

0.05

0.15

remainder

6061

0.40每0.8

0.7

0.15每0.40

0.15

0.8每1.2

0.04每0.35

0.25

 

0.15

 

 

 

 

0.05

0.15

remainder

6063

0.20每0.6

0.35

0.10

0.10

0.45每0.9

0.10

0.10

 

0.10

 

 

 

 

0.05

0.15

remainder

6066

0.9每1.8

0.50

0.7每1.2

0.6每1.1

0.8每1.4

0.40

0.25

 

0.20

 

 

 

 

0.05

0.15

remainder

6070

1.0每1.7

0.50

0.15每0.40

0.40每1.0

0.50每1.2

0.10

0.25

 

0.15

 

 

 

 

0.05

0.15

remainder

6082

0.7每1.3

0.50

0.10

0.40每1.0

0.60每1.2

0.25

0.20

 

0.10

 

 

 

 

0.05

0.15

remainder

6105

0.6每1.0

0.35

0.10

0.10

0.45每0.8

0.10

0.10

 

0.10

 

 

 

 

0.05

0.15

remainder

6162

0.40每0.8

0.50

0.20

0.10

0.7每1.1

0.10

0.25

 

0.10

 

 

 

 

0.05

0.15

remainder

6262

0.40每0.8

0.7

0.15每0.40

0.15

0.8每1.2

0.04每0.14

0.25

 

0.15

0.40每0.7

 

0.40每0.7

 

0.05

0.15

remainder

6351

0.7每1.3

0.50

0.10

0.40每0.8

0.40每0.8

 

0.20

 

0.20

 

 

 

 

0.05

0.15

remainder

6463

0.20每0.6

0.15

0.20

0.05

0.45每0.9

 

0.05

 

 

 

 

 

 

0.05

0.15

remainder

7005

0.35

0.40

0.10

0.20每0.70

1.0每1.8

0.06每0.20

4.0每5.0

 

0.01每0.06

 

 

 

0.08每0.20

0.05

0.15

remainder

7022

0.50

0.50

0.50-1.00

0.10每0.40

2.60每3.70

0.10每0.30

4.30每5.20

 

0.20

 

 

 

 

0.05

0.15

remainder

7068

0-0.12

0-0.15

1.60-2.40

0每0.10

2.20每3.00

0每0.05

7.30每8.30

 

0-0.01

 

 

 

0.05每0.15

 

 

remainder

7072

0.7 Si+Fe

0.10

0.10

0.10

 

0.8每1.3

 

 

 

 

 

 

0.05

0.15

remainder

7075

0.40

0.50

1.2每2.0

0.30

2.1每2.9

0.18每0.28

5.1每6.1

 

0.20

 

 

 

 

0.05

0.15

remainder

7079

0.3

0.40

0.40每0.80

0.10每0.30

2.9每3.7

0.10每0.25

3.8每4.8

 

0.10

 

 

 

 

0.05

0.15

remainder

7116

0.15

0.30

0.50每1.1

0.05

0.8每1.4

 

4.2每5.2

0.05

0.05

 

0.03

 

 

0.05

0.15

remainder

7129

0.15

0.30

0.50每0.9

0.10

1.3每2.0

0.10

4.2每5.2

0.05

0.05

 

0.03

 

 

0.05

0.15

remainder

7178

0.40

0.50

1.6每2.4

0.30

2.4每3.1

0.18每0.28

6.3每7.3

 

0.20

 

 

 

 

0.05

0.15

remainder

Manganese plus chromium must be between 0.12每0.50%.
††This column lists the limits that apply to all elements, whether a table column exists for them or not, for which no other limits are specified.

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