Engineering Materials
Malleable cast iron

Is produced by small additions of magnesium (or cerium) in the ladle. Graphite is in the nodular or spheroidal form and is well dispersed throughout the material
Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten 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

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Steel contains

Alloying elements like chromium, tungsten nickel and copper
50% or more iron
80% or more iron
Elements like phosphorus, sulphur and silicon in varying quantities

ANSWER DOWNLOAD EXAMIANS APP

Engineering Materials
Aluminium bronze contains

92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg
90% magnesium and 9% aluminium with some copper
94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe
10% aluminium and 90% copper

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Engineering Materials