ENGINEERING MATERIALS

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

Ductility decreases

All of these

Yield point increases

Ultimate tensile strength increases

In which atoms align themselves in a geometric pattern upon solidification

Which emits fumes on melting

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

Which is not attacked by phosphorous

Blast furnace

Open hearth furnace

Cupola

Bessemer converter

In circular motion

In a haphazard way

Back and forth like tiny pendulums

In a random manner