Wear Resistant Steels

Some of the wear resistant steels are

a) High Manganese Wear Resistant Austenite (Had Field) Steel

     It has C 1.0 to 1.4% and Mn 11 to 12%.

Properties:

Tensile strength - 849 N/mm2

Elongation (%) - 40

Brinell hardness - Case 550

                               Core 200

Machinability - Poor

Applications:

a) Jaw crushing machinery

b) Dredging equipment (tumblers, buckets, etc)

c) Railway-track work

d) Digger teeth, elevator chains, etc.

b) High Carbon, High Chromium, Wear Resistant Steel

    It has C 1.5 to 2.25%, Cr 12%, Mo 1%, V 0.25%. The steel is quenched in oil or air.

Properties

1) Such steels are very deep hardening

2) They have low thermal conductivity

3) Require slow heating

4) Require careful heat-treatment and avoidance of decarburization.

Special carbide present in this steel makes it very resistant to tempering, around 58-59 Rockwell C being retained after tempering 315°C.