The lower critical temperature

Engineering Materials
The lower critical temperature

Depends upon the rate of heating

Decreases as the carbon content in steel increases

Increases as the carbon content in steel increases

Is same for all steels

Depends upon the rate of heating

Decreases as the carbon content in steel increases

Increases as the carbon content in steel increases

Is same for all steels

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Engineering Materials
The aluminium alloy, mainly used, for anodized utensil manufacture, is

Magnalium

Hindalium

Duralumin

Y-alloy

Magnalium

Hindalium

Duralumin

Y-alloy

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Engineering Materials
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

Mainly pearlite

Mainly ferrite

Ferrite and pearlite

Pearlite and cementite

Mainly pearlite

Mainly ferrite

Ferrite and pearlite

Pearlite and cementite

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Engineering Materials
Ball bearings are, usually, made from

High carbon steel

Medium carbon steel

Low carbon steel

Chrome steel

High carbon steel

Medium carbon steel

Low carbon steel

Chrome steel

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

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

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

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

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

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

770°C

1050°C

Below recrystallization temperature

910°C

770°C

1050°C

Below recrystallization temperature

910°C

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Engineering Materials

Engineering Materials The lower critical temperature

Engineering Materials The aluminium alloy, mainly used, for anodized utensil manufacture, is

Engineering Materials When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

Engineering Materials Ball bearings are, usually, made from

Engineering Materials White cast iron

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

Engineering Materials
The lower critical temperature

Engineering Materials
The aluminium alloy, mainly used, for anodized utensil manufacture, is

Engineering Materials
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

Engineering Materials
Ball bearings are, usually, made from

Engineering Materials
White cast iron

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