M42 High Speed Steel Bar

Product Description

M42 High Speed Steel Bar is a premium cobalt high speed steel which have high hardness and superior hot hardness due to which this steel is best suited for machining high strength and pre hardness steels, high hardness alloys, non ferrous super alloys used on the aerospace, oil and the power generation industries.

Chemical Composition :-

• C : 1.08%
• Cr : 3.85%
• Sr : 0.45%
• W : 1.50%
• Mo : 9.50%
• V : 1.20%
• Co : 8.00%

Properties :-

• Specific Gravity : 7.81
• Density : 0.282 LB/in3
• Modulus of Elasticity : 30x106 PSI
• Machinability : 35 to 40%

Equivalent :-

1.3247, S500, HS 2-10-1-8, E M42, REX M42, Dynamax

Heat Treating :-

• Preheat : 1500 -1550F
• Annealing : 1575 -1650F
• Austenitizing : 2125- 2175F
• Tempering : 1025- 1050F
• Quench : Salt, Oil, Atm (medium)

Applications :-

Taps, twist drills, milling cutters, reamers, saws, broaches, knives, thread rolling dies, knives etc.