LM – 25 Aluminium alloy is softer and more ductile than other aluminium alloys having good corrosion resistance. Relatively difficult to die cast. Lower mechanical properties and poorer mach inability than other aluminium alloys. Used primarily for parts which must be riveted or otherwise cold- worked to take advantage of the high ductivility.


Alloying Elements(%)
Si 6.50 – 7.50
Mg 0.20 – 0.45
Impurities Fe 0.50 M
  Cu 0.10 M
Mn 0.30 M
Ni 0.10 M
Zn 0.10 M
Sn 0.05 M
Ti 0.20 M
Pb 0.10 M