Engineering Materials
Bronze contains

85 - 92% copper and rest tin with little lead and nickel
70% copper and 30% zinc
90% copper and 10% tin
70 - 75% copper and rest tin

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Engineering Materials
White cast iron

Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron
Is produced by small additions of magnesium (or creium) in the ladle. Graphite is in nodular or spheroidal form and is well dispersed throughout the material
Is produced by annealing process. It is soft, tough and easily machined metal
Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

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