Engineering Materials
Y-alloy contains

3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium
5 to 6% tin, 2 to 3% copper and rest aluminium
4 to 4.5% magnesium, 3 to 4% copper and rest aluminium
3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium

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Engineering Materials
Inconel contains

80% nickel and 20% chromium
68% nickel, 29% copper and 3% other constituents
80% nickel, 14% chromium and 6% iron
65% nickel, 15% chromium and 20% iron

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Engineering Materials
White 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
Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron

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