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MH7

Japan JIS SKH58 W-phase system high-speed tool steel and SKH58 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

DATASHEET FOR:STEEL GRADES:TOOL STEEL AND HARD ALLOY:SKH58

Chemical composition(mass fraction)(wt.%) of the MH7

C(ï¼…)Si(ï¼…)Mn(ï¼…)Cr(ï¼…)Mo(ï¼…)V(%)W(%)
0.95-1.05Max 0.70Max 0.403.50-4.508.20-9.201.70-2.201.50-2.10

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade SKH58

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade SKH58

Yield
Rp0.2(MPa)
Tensile
Rm(MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated ConditionBrinell hardness (HBW)
295 (≥)724 (≥)212321Solution and Aging, Annealing, Ausaging, Q+T,etc144

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade MH7

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) andThermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
13--

0.14-
147415-24.3133
-
332-1141.2

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