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ALUMINUM 356

Chemical Composition % by weight

Element
Nominal
Minimum
Maximum
Aluminum
-
-
Remainder
Silicon
7.0
6.5
7.5
Copper
-
-
-
Magnesium
.30
.20
.45
Zinc
-
-
.35
Iron
-
-
0.6

 Mechanical Properties

Test Bar Values as Sand Cast

Property
Heat Treated to T-6
Tensile Strength
ksi
30.0
Yield Strength
ksi (0.5% Extension Under Load)
20.0
Elongation
% in 2 inches
3.0
Hardness
Brinell (500 kg Load)
55-90

Fabrication Practices

Alloy Characteristics:
“1” being the best
Corrosion resistance
2
Machinability
3
Polishing
2
Weldability
2
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