7 - Performance and characteristics of metals - Non-ferrous alloys

Question 1

Bronze

Answer 1

Tough, corrosion resistant, can be cast

90% copper, 10% tin
Melting point: 850-1000*C

Statues, coins

Question 2

Brass

Answer 2

Corrosion resistant, good electrical and thermal conductor, low melting point, casts well

65% copper, 35% zinc
Melting point: 930*C

Boat fittings, door parts, valves and taps

Question 3

Duralumin

Answer 3

Similar strength to mild steel but more light weight and ductile. Becomes harder the more it’s worked

Aluminium with 4% copper, 1% magnesium and manganese

Aircraft and car parts

Question 4

Pewter

Answer 4

Malleable, low melting point, casts well

85-99% tin, the rest is copper
Melting point: 170-230*C

Flasks, tankards, goblets. Candlesticks, trophies, photoframes