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  ALUMINUM ALLOYS CHEMICAL COMPOSITION LIMITS
Alloy (ISS)
Old New
Equivalent alloy (A.A.)
U.S.A.
Copper
Min. Max
Magnesium Min.Max
Silicon Min.Max
Iron Max
Manganese Min. Max
'Others (total) Max
Remarks
1C 19000
1100
0.1
0.50
0.6
0.1
0.1
Aluminium 99.0%Min.
1B 19500
1050
0.05
0.30
0.4
0.05
0.1
Aluminium 99.5%Min.
1E 19501
1050 EC
0.04
0.15
0.35
0.1
Aluminium 99.5%Min.
_ 19600
1060
0.05
0.25
0.35
0.03
0.1
Aluminium 99.6%Min.
19700
1070
0.03
0.20
0.25
0.03
0.1
Aluminium 99.7%Min.
2011
5.0
6.0
0.1
0.4
0.7
0.1
0.4
Also lead & bismuth 0.2-0.6% Each
H 15 24345
2014
3.8
5.0
0.2
0.8
0.5
1.2
0.7
0.3
1.2
0.5
-
H 14   24534
2017
3.5
4.7
0.4
1.2
0.2
0.7
0.7
0.4
1.2
0.5
-
N3    31000
3003
0.1
0.1
0.6
0.7
0.8
1.5
0.4
-
N 21 43000
4043
0.1
0.2
4.5
6.0
0.6
0.5
0.2
-
N 2    46000
4047
0.1
0.2
10.0
13.0
0.6
0.5
0.2
-
N4    52000
5052
0.1
1.7
2.6
0.6
0.5
0.5
0.4
Chromium + Mn + 0.5
N5    53000
5086
0.1
2.8
4.0
0.6
0.5
0.5
0.4
Cr + Mn = 0.5
N6    55000
5056
0.1
4.5
5.5
0.6
0.7
0.5
0.4
Chromium up to 0.25
N 8    54300
5083
0.1
4.0
4.9
0.4
0.7
0.5
1.0
0.4
Chromium up to 0.25
H 20 65032
6061
0.15
0.4
0.7
1.2
0.4
0.8
0.7
0.2
0.8
0.4
Chromium (0.15-0.35) Either Mn or Cr. shall be present.
H9 63400
6063

0.1
0.4
0.9
0.3
0.7
0.6
0.3

Chromium up to0.10
  
6066
0.7
1.2
0.8
1.4
0.9
1.8
0.7
0.6
1.1
0.4
-
64423
0.5
1.0
0.5
1.3
0.7
1.3
0.8
1.0
-
91 E 63401
6101
0.05
0.4
0.9
0.3
0.7
0.5
0.03
0.1
-
64401
6201
0.1
0.6
0.9
0.5
0.9
0.5
0.03
0.1
-
H 30 64430
6351
0.1
0.4
1.2
0.6
1.3
0.6
0.4
1.0
0.3
Chromium up to 0.25
74530
7039
0.2
1.0
1.5
0.4
0.7
0.2
0.7
0.4
Zinc (4.5%)
  
7075
1.20
2.0
2.1
2.9

0.5
0.7
0.3
0.2
Zinc (5.1-6.1) & Chromium (0.2-0.8)


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