All metal to be placed on warrant must be in compliance with the special contract rules.
The chemical composition for each contract is outlined below.
Chemical composition - Aluminium (PDF)
Chemical composition - Aluminium Alloy (PDF)
Chemical composition - Cobalt (PDF)
Chemical composition - Copper (PDF)
Chemical composition - Lead (PDF)
Chemical composition - NASAAC (PDF)
Chemical composition - Nickel (PDF)
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