Impact Strength Casting Impact Strength Casting belted (Automotive) (OP) 21 Aug 03 14:50 I am looking for a castable alloy with a VERY high impact strength. I am currently using ZAMAK 5. Is there an alternative? RE: Impact Strength Casting plasgears (Mechanical) 2 Sep 03 17:54 Yes, iron-nickel PM with copper infiltration and air hardening. The process is competitive with die casting. RE: Impact Strength Casting CoryPad (Materials) 3 Sep 03 09:24 The magnesium alloys AM60, AM50 and AM20 have high ductility and can provide impact resistance. You also could try the hypoeutectic aluminium alloys - just about anything is better than zinc. Regards,CoryPlease see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.