Question

State the composition and two uses of following alloys :

(a) Stainless steel

(b) Duralumin

(c) Brass

(d) Bronze

Answer 1

(a) Stainless steel: It is an alloy of 83% iron, 1% carbon, 15% chromium and 1% nickel.

Uses of stainless steel :

• It is used for making household utensils.
• It is used for making surgical instruments.

(b) Duralumin: It is an alloy of 95% aluminium, 4% copper, 0.5% manganese and 0.5% magnesium.

Uses of duralumin :

• It is used for making aircraft frames.
• It is used for making household articles.

(c) Brass: It is an alloy of 40% to 20% zinc and 60% to 80% copper.

Uses of brass :

• It is used for making tap and electric switches,
• It is used for making household utensils.

(d) Bronze: It is an alloy of 80% copper, 10% zinc and 10% tin.

Uses of bronze :

• It is used for making statues.
• It is used for making household utensils.