Question

Name the main constituent metal in the following alloys:
(i) Duralumin
(ii) Brass
(iii) Stainless steel.

Answer 1

Alloy	Main constituent metal	Composition
Duralumin	Aluminium	Al = 95% Cu = 4% Mg = 0.5%
Brass	Copper	Cu = 55 – 95% Zn = 5 – 45%
Stainless steel	Iron	Fe = 75% Ni = 8-10 % Cr = 15-18% C = 0.5-1%