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M42

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T11341 T11342
#M42

Description

USA ASTM M42 Molybdenum series High-speed tool steel and M42 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: M42
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy M42 ASTM USA Molybdenum series High-speed tool steel
T11330
M33
T11333
SS440
M34
T11334
M36
T11336
M41
T11341

Chemical composition(mass fraction)(wt.%) of the M42

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％) V(%) W(%) Co(%)
1.05-1.15 0.15-0.65 0.15-0.40 ≤0.030 ≤0.030 3.50-4.25 9.00-10.00 0.95-1.35 1.15-1.85 7.75-8.75

Mechanical Properties of steel grade M42

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
288 (≥) 345 (≥) 32 14 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade M42

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
43 - -     0.14 -  
128 454 - 43.3 413   -  
122 - 13 24.2   322 343

Heat Treatment of steel grade M42

Heat treated : 1123°C - 1556°C

Technological Curves of steel grade M42

Cross Reference Table (Equivalent Grade) of M42

Grade Standard Country Application
M42 ASTM USA Molybdenum series High-speed tool steel
CPM Rex M42 AISI USA Powder metallurgy high-speed tool steel
BM42 UK Carbide for cutting tools
BM42 UK Carbide for cutting tools
SNCM420H CNS China China Taiwan Structural steel
SCM420H CNS China China Taiwan Structural steel
SUM42 CNS China China Taiwan Structural steel
SNCM420 CNS China China Taiwan Structural steel
SCM420 CNS China China Taiwan Structural steel
SCM421 CNS China China Taiwan Structural steel
T11341 T11342
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Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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