Specifications Federal QQ-A-601, ASTM B-26/B-108, SAE 323
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 |
Typical Applications
Machine tool parts, marine applications, pump bodies, requiring pressure tightness and
corrosion resistance. Typically 356 aluminum castings are heat treated to T-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 |
C83600 (115) | C84400 (123) | C90300 (225) | C92300 (235) | C92200 (245) | C90700 (205) | C92900 (206A)
(319) Aluminum | (356) Aluminum | (535) Almag | C85400 (403) | C86500 (421) | C86300 (424)
C95400 (415C) | C87500 (500-13B) | C89833 (836) | C87850 (Eco Brass)
The values listed above represent reasonable approximations suitable for general engineering use.
Due to commercial variations in composition and to manufacturing limitations, they
should not
be used for specification purposes. See applicable A.S.T.M. specification references.
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