Answer to Question #74553 in Inorganic Chemistry for srikant behera

Question

Give the names of any two alloys of aluminium which have some amount of copper or magnesium. How are these more advantageous than pure aluminium?

Answer 1

1 Duralumin is 95% aluminium, 4% copper, 0.5% magnesium, and 0.5% manganese - has increased strength and hardness compared to pure aluminum
2 Silumin.Aluminium-silicon alloys contain 3 to 25% silicon content, insignificant amount of impurities of Fe, Cu, Mn, Ca, Ti, Zn, and some others.
Al-Si alloys (silumins) have the best foundry properties.