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Pure Mg Magnengium Alloy Welding Wire Az31 AZ61 Az91 Manufacturer Parameter: AZ31S GB/T 5153 Elements Al Zn Mn Si Fe Cu Ni Others,total Min% 2.40 0.50 0.15 Max% 3.60 1.50 0.4 0.10 0.005 0.05 0.005 0.3 ...