Cementite consist of

Engineering Materials
Cementite consist of

6.67% carbon and 93.33% iron

13% cementite and 87% ferrite

13% ferrite and 87% cementite

13% carbon and 87% ferrite

6.67% carbon and 93.33% iron

13% cementite and 87% ferrite

13% ferrite and 87% cementite

13% carbon and 87% ferrite

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Engineering Materials
Tungsten when added to steel __________ the critical temperature.

Raises

Lowers

None of these

Does not effect

Raises

Lowers

None of these

Does not effect

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Engineering Materials
White cast iron

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

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 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

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

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Engineering Materials
Cemented carbide tools are not found to be suitable for cutting

Steel

Aluminium

Cast iron

Brass

Steel

Aluminium

Cast iron

Brass

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Engineering Materials
When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite.

Less than

Equal to

More than

None of these

Less than

Equal to

More than

None of these

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Engineering Materials
When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces

Malleable cast iron

Alloy cast iron

Nodular cast iron

White cast iron

Malleable cast iron

Alloy cast iron

Nodular cast iron

White cast iron

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Engineering Materials

Engineering Materials Cementite consist of

Engineering Materials Tungsten when added to steel __________ the critical temperature.

Engineering Materials White cast iron

Engineering Materials Cemented carbide tools are not found to be suitable for cutting

Engineering Materials When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite.

Engineering Materials When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces

Engineering Materials
Cementite consist of

Engineering Materials
Tungsten when added to steel __________ the critical temperature.

Engineering Materials
White cast iron

Engineering Materials
Cemented carbide tools are not found to be suitable for cutting

Engineering Materials
When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite.

Engineering Materials
When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces