Letter 15050

Old alloy designations 

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I am looking for the four digit aluminium alloy designations for some old designations in the following format eg G57S, B19S, A56S. Please could some suggest where I could find these - preferably on the Net.

Thank you.

Elise Leibnitz
- South Africa

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A56S is an Alcan designation. Equivalent to 5056A or ISO R209 grade Al-Mg5 or DIN 1700 AlMg5 or DIN 17007 3.3355 or Italian grade P-AlMg5 or Japanese grade A5056. I rather suspect that the other two grades you mention are also Alcan, but have no record of them.

Bill Reynolds
   consultant metallurgist
Ballarat, Victoria, Australia

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