Carbon percentage in high speed steel tool material is 0.6 to 1.0. The – McqOptions

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1.	Carbon percentage in high speed steel tool material is 0.6 to 1.0. The hardness of carbon tool steels is increased, when it is alloyed with
A.	vanadium & chromium
B.	silicon
C.	tungsten
D.	manganese
Answer» B. silicon

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