White metal contains

Engineering Materials
White metal contains

Silver and chromium

Alloy of tin, lead and cadmium

63 to 67% nickel and 30% copper

88% copper and 10% tin and rest zinc

Silver and chromium

Alloy of tin, lead and cadmium

63 to 67% nickel and 30% copper

88% copper and 10% tin and rest zinc

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Engineering Materials
Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?

Phosphorus

Silicon

Manganese

Sulphur

Phosphorus

Silicon

Manganese

Sulphur

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Engineering Materials
Drop forging dies contain carbon of the order of

0.1 to 0.2%

0.25 to 0.5%

0.6 to 0.7%

0.7 to 0.9%

0.1 to 0.2%

0.25 to 0.5%

0.6 to 0.7%

0.7 to 0.9%

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Engineering Materials
Hardness of lower bainite (tempered martensite) is about

RC 80

RC 57

RC 48

RC 65

RC 80

RC 57

RC 48

RC 65

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Engineering Materials
Malleable cast iron

Is produced by annealing process. It is soft, tough, and easily machined metal

Is produced by small additions of magnesium (or cerium) in the ladle. Graphite is in the nodular or spheroidal form and is well dispersed throughout the material

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

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

Is produced by annealing process. It is soft, tough, and easily machined metal

Is produced by small additions of magnesium (or cerium) in the ladle. Graphite is in the nodular or spheroidal form and is well dispersed throughout the material

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

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

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Engineering Materials
The lower critical point for all steels is

723°C

600°C

700°C

913°C

723°C

600°C

700°C

913°C

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Engineering Materials

Engineering Materials White metal contains

Engineering Materials Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?

Engineering Materials Drop forging dies contain carbon of the order of

Engineering Materials Hardness of lower bainite (tempered martensite) is about

Engineering Materials Malleable cast iron

Engineering Materials The lower critical point for all steels is

Engineering Materials
White metal contains

Engineering Materials
Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?

Engineering Materials
Drop forging dies contain carbon of the order of

Engineering Materials
Hardness of lower bainite (tempered martensite) is about

Engineering Materials
Malleable cast iron

Engineering Materials
The lower critical point for all steels is