3. Aluminium and aluminium alloys
3.1 Casting alloys
The old French standard NF A 02-004 (1980) is still often used, but European standards EN 1780 and EN 1706 (1998) should be used.
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Numerical and symbolic designations always begin with the letters EN AC-. Then :
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For the numerical designation, we have five digits:
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the first gives the main alloying element:
1: unalloyed aluminium,
2: aluminum-copper,
3: aluminum-manganese,
4: aluminum-silicon,
5: aluminum-magnesium,
6: aluminum-magnesium-silicon,...
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Aluminium and aluminium alloys
Copper and copper alloys
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