ENGINEERING MATERIALS

Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable

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

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

Yield point increases

Ductility decreases

Ultimate tensile strength increases

All of these

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

Which emits fumes on melting

In which atoms align themselves in a geometric pattern upon solidification

Bessemer converter

Open hearth furnace

Blast furnace

Cupola

In a haphazard way

Back and forth like tiny pendulums

In a random manner

In circular motion