Engineering Materials
Which is false statement about properties of aluminium?

Fatigue strength is not high
Modulus of elasticity is fairly low
Wear resistance is very good
Creep strength limits its use to fairly low temperatures

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Engineering Materials
In process annealing, the hypo eutectoid steel is

Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace
Heated below or closes to the lower critical temperature and then cooled slowly
Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air
Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium

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