In high speed steels, manganese is used to tougher the metal and to increase its

Engineering Materials
In high speed steels, manganese is used to tougher the metal and to increase its

Critical temperature

Yield point

Hardness

Melting point

Critical temperature

Yield point

Hardness

Melting point

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Engineering Materials
The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will

Increase

Decrease

First increase and then decrease

Remain same

Increase

Decrease

First increase and then decrease

Remain same

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Engineering Materials
Malleable cast iron

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

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

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

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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Engineering Materials
Which of the following statements are true for annealing of steels?

All of these

Internal stresses are relieved

Steels are heated to 500 to 700°C

Cooling is done slowly and steadily

All of these

Internal stresses are relieved

Steels are heated to 500 to 700°C

Cooling is done slowly and steadily

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Engineering Materials
Amorphous material is one

In which atoms align themselves in a geometric pattern upon solidification

Which is not attacked by phosphorous

In which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid

Which emits fumes on melting

In which atoms align themselves in a geometric pattern upon solidification

Which is not attacked by phosphorous

In which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid

Which emits fumes on melting

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Engineering Materials
Pipes for bicycle frames are made of

Forged steel

Hot rolled steel

Cold rolled steel

Cast steel

Forged steel

Hot rolled steel

Cold rolled steel

Cast steel

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Engineering Materials

Engineering Materials In high speed steels, manganese is used to tougher the metal and to increase its

Engineering Materials The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will

Engineering Materials Malleable cast iron

Engineering Materials Which of the following statements are true for annealing of steels?

Engineering Materials Amorphous material is one

Engineering Materials Pipes for bicycle frames are made of

Engineering Materials
In high speed steels, manganese is used to tougher the metal and to increase its

Engineering Materials
The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will

Engineering Materials
Malleable cast iron

Engineering Materials
Which of the following statements are true for annealing of steels?

Engineering Materials
Amorphous material is one

Engineering Materials
Pipes for bicycle frames are made of