The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

Engineering Materials
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

1050°C

Below recrystallization temperature

910°C

770°C

1050°C

Below recrystallization temperature

910°C

770°C

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Points of arrest for iron correspond to

Stages at which allotropic forms change

Stages at which further heating does not increase temperature for some time

There is nothing like points of arrest

Stages at which properties do not change with increase in temperature

Stages at which allotropic forms change

Stages at which further heating does not increase temperature for some time

There is nothing like points of arrest

Stages at which properties do not change with increase in temperature

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Tungsten in high speed steel provides

Toughness

Sharp cutting edge

Wear resistance

Hot hardness

Toughness

Sharp cutting edge

Wear resistance

Hot hardness

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
For a steel containing 0.8% carbon

There can be any number of critical points

There are two critical points

There is only one critical point

There is no critical point

There can be any number of critical points

There are two critical points

There is only one critical point

There is no critical point

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Delta-iron occurs between the temperature ranges of

600°C to 900°C

900°C to 1400°C

400°C to 600°C

1400°C to 1530°C

600°C to 900°C

900°C to 1400°C

400°C to 600°C

1400°C to 1530°C

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Ductile 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

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 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

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

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials

Engineering Materials The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

Engineering Materials Points of arrest for iron correspond to

Engineering Materials Tungsten in high speed steel provides

Engineering Materials For a steel containing 0.8% carbon

Engineering Materials Delta-iron occurs between the temperature ranges of

Engineering Materials Ductile cast iron

Engineering Materials
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

Engineering Materials
Points of arrest for iron correspond to

Engineering Materials
Tungsten in high speed steel provides

Engineering Materials
For a steel containing 0.8% carbon

Engineering Materials
Delta-iron occurs between the temperature ranges of

Engineering Materials
Ductile cast iron