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J. K. Industrial Corporation are manufactured from the finest steel available. The heat treatment process is controlled by our Metallurgical laboratory using advanced computerised and electronic instrumentation.

High Speed Steel contains various elements such as Molybdenum, Tungsten, Cobalt and Vanadium and must be specially treated to produce the ideal combination of strength, toughness and wear resistance.

J. K. Industrial Corporation products are manufactured from one of the following High Speed Steels depending on the product and application.


C Cr W Mo V Co Hardness (HRC)
M2
M35
M42
M9V
0.9
0.9
1.1
1.25
4
4
4
4.2
6
6
1.5
3.5
5
5
9.5
8.5
2
2
1
3
-
5
8
-
63 - 65
64 - 66
66 - 68.5(70)
64 - 66

M2 is the standard High Speed Steel and is used where toughness is important, together with a good standard of wear resistance and red hardness.

M35 is a development of M2 and contains 5% cobalt which gives improved hardness, wear resistance and red hardness. It may be used when cutting higher strength materials.

M42 can be heat treated to very high hardness levels of up to 70 HRC (1 000 HV) although normally a slightly lower figure will be employed to retain toughness. The steel is ideal for machining higher strength materials and work hardening alloys such as stainless steels, nimonic alloys etc. Despite its high hardness, M42 has good grindability characteristics due to a lower vanadium content.

M9V material is mainly used in the manufacture of machine taps because of its good wear resistance, good grinding capabilities, high hardness and excellant toughness

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