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[Peyman 16,150]

Wear Resistant Steels:

- Some of the wear resistant steels are


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

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[TD=align: left]High Manganese Steel Sheets[/TD]
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Chemical composition:

C 1.0 to 1.4%
Mn 11 to 12%


Properties:

- Tensile strength …… .. 849 N/mm2
- Elongation (%) …… ….. 40
- Brinell Hardness …….. Case 550
Core 200

- Its machineability is poor.


Heat Treatment:

- Finish by water quenching from 1050 °C to keep the carbides in solid solution.


Applications:

After a properly controlled heat treatment, this steel is characterized by high strength, high ductility and excellent resistance to wear and thus it finds uses such as in
- Jaw crushing machinery.
- Digger teeth, elevator chains.
- Railway track work.
- Dredging equipment (buckets, tumblers, etc.)




b) High Carbon, High Chromium, Wear Resistant Steel

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[TD=align: left]High Carbon, High Chromium, Wear Resistant Steel[/TD]
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Chemical composition:

C 1.5 to 2.25%
Cr 12%
Mo 1%
V 0.25%

- The steel is quenched in oil or air.


Properties:

- Require slow heating.
- Are very deep hardening.
- Have low thermal conductivity.
- Require careful heat-treatment and avoidance of decarburization.

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