Malleability of a material can be defined as

Engineering Materials
Malleability of a material can be defined as

Ability to undergo large permanent deformations in compression

Ability to recover its original form

Ability to undergo large permanent deformations in tension

All of these

Ability to undergo large permanent deformations in compression

Ability to recover its original form

Ability to undergo large permanent deformations in tension

All of these

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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

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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Engineering Materials
A small percentage of boron is added to steel in order to

Increase wear resistance

Increase hardenability

Reduce machinability

Increase endurance strength

Increase wear resistance

Increase hardenability

Reduce machinability

Increase endurance strength

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Engineering Materials
The tensile strength of wrought iron is maximum

Along the lines of slag distribution

Perpendicular to lines of slag distribution

None of these

Uniform in all directions

Along the lines of slag distribution

Perpendicular to lines of slag distribution

None of these

Uniform in all directions

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Engineering Materials
A material is known as allotropic or polymorphic if it

Exists in several crystal forms at different temperatures

Has its atoms distributed in a random pattern

Responds to heat treatment

Has a fixed structure under all conditions

Exists in several crystal forms at different temperatures

Has its atoms distributed in a random pattern

Responds to heat treatment

Has a fixed structure under all conditions

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Engineering Materials
Delta iron occurs at temperature of

Between 910°C and 1400°C

Above melting point

Room temperature

Between 1400°C and 1539°C

Between 910°C and 1400°C

Above melting point

Room temperature

Between 1400°C and 1539°C

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Engineering Materials

Engineering Materials Malleability of a material can be defined as

Engineering Materials White cast iron

Engineering Materials A small percentage of boron is added to steel in order to

Engineering Materials The tensile strength of wrought iron is maximum

Engineering Materials A material is known as allotropic or polymorphic if it

Engineering Materials Delta iron occurs at temperature of

Engineering Materials
Malleability of a material can be defined as

Engineering Materials
White cast iron

Engineering Materials
A small percentage of boron is added to steel in order to

Engineering Materials
The tensile strength of wrought iron is maximum

Engineering Materials
A material is known as allotropic or polymorphic if it

Engineering Materials
Delta iron occurs at temperature of