This alloy conforms to BS 1490:1988. It contains Silicon (17-20), Copper (1.3-1.8), Nickel (0.8 – 1.5) and Magnesium (0.8 – 1.5). This alloy requires special foundry techniques.
Global Conversion Chart for LM28 – Primary Aluminium Alloy
Al-Si19CuMgNi (ISO)