Galvanizing Engineer Interview Question:

Tell me what are the chemical composition of Gun metal, German silver and Duralumin?

Submitted by: Muhammad

☛ Gun metal is an alloy of 88% copper, 10% tin and 2% zinc. It is generally used for casting boiler fittings, bearings ,bushes etc.
☛ German silver is an alloy of copper, nickel, tin and led. It is used for making utensils and resistances in electrical work.
☛ Duralumin is the aluminium alloy contains 3.5­4.5% copper,0.4­0.7% magnesium,0.4­0.7% manganese and remaining aluminium .Mainly used for making bars, tubes, rivets, sheets ,forgings and stampings.
Submitted by: Muhammad