Metamorphic Magnesium Alloy(Tube,Bar,Thread,Profile). Metamorphic Magnesium Alloy(Tube,Bar,Thread,Profile). AlMnZnZrSiCuNlFeCaMgothersAZ31B2.5-3.50.2-1.00.6-1.4-0.10.050.0050.0050.04res0.3AZ61A5.8-7.20.15-0.50.4-1.5-0.10.050.0050.005--0.3AZ80A7.8-9.20.12-0.50.2-0.8-0.10.050.0050.005--0.3M1A-1.2-2.0--0.10.050.01-0.3-0.3ZK40A--3.5-4.5>0.45------0.3ZK60A--4.8-6.2>0.45------0.3.