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Description

China 8MnSi Alloy tool steel - Measuring tool steel cutting tools and 8MnSi Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: 8MnSi
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy 8MnSi China Alloy tool steel - Measuring tool steel cutting tools
T7
T8
T8Mn
T9
T10
T11
T12
T13
4CrW2Si
9SiCr

Chemical composition(mass fraction)(wt.%) of the 8MnSi

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) V(%) Cu(%)
0.75~0.85 0.30~0.60 0.80~1.10 ≤0.030 ≤0.030 ≤0.25 ≤0.20 ≤0.20 ≤0.30

Mechanical Properties of steel grade 8MnSi

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)
543 (≥) 129 (≥) 32 44 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade 8MnSi

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
12 - -     0.14 -  
121 918 - 44.3 134   -  
334 - 31 41.2   133 224

Heat Treatment of steel grade 8MnSi

Heat treated : 1658°C - 1437°C

Technological Curves of steel grade 8MnSi

Cross Reference Table (Equivalent Grade) of 8MnSi

Grade Standard Country Application
8MnSi China Alloy tool steel - Measuring tool steel cutting tools

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