Engineering Materials
Cyaniding is the process of

Dipping steel in cyanide bath
Obtaining cyanide salts
Reacting steel surface with cyanide salts
Adding carbon and nitrogen by heat treatment of steel to increase its surface hardness

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Engineering Materials
Aluminium bronze contains

90% magnesium and 9% aluminium with some copper
10% aluminium and 90% copper
92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg
94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe

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