Materials and Construction
A material is called 'ductile', if it can be

Drawn into wires
Made lustrous by heating it
Fractured without deformation
Hammered to a thin sheet

ANSWER DOWNLOAD EXAMIANS APP

Materials and Construction
Chrome vanadium steels usually contain 0.8 to 1.1% Cr, 0.25 to 0.35% C and < 0.25% V.

Not helpful in producing cleaner steel due to oxidising action of vanadium
Having poor toughness
Used for making axle & shafts of aeroplanes, automobiles and locomotives
Having poor fatigue resistance

ANSWER DOWNLOAD EXAMIANS APP

Materials and Construction
Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its

High strength to weight ratio
High strength and corrosion & oxidation-resistance at elevated temperature
Low temperature strength properties
Its ability to be cast, rolled, forged & stamped

ANSWER DOWNLOAD EXAMIANS APP