COMPARISON BETWEEN ANNEALING AND NORMALISING

 COMPARISON BETWEEN ANNEALING AND NORMALISING

Comparison between Annealing and Normalising

S.No.

Annealing

Normalising

1

In this hypo-eutectoid
steel is heated to a temperature approximately 20 to 30°C above temperature
the higher critical temperature and for hypereutectoid steel is heated 20 to
30°C above the lower critical temperature.

In
this metal is heated 30 to 50°C above higher critical temperature.

2

It
gives good results for low and medium carbon steel

It
also gives very good results for low and medium carbon steel

3

It gives high ductility

It induces gives higher ultimate strength, yield point
and impact strength in ferrous material.

4

It is basically required to soften
the metal,

to improve machinability, to increase ductility, improve, to
refine grain size.

It is basically required to refine grain
size, improve structure of weld, to relieve internal stresses.

 


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