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Description

Korea KS STS8 Carbide for cutting tools and STS8 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: STS8
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy STS8 KS Korea Carbide for cutting tools
STS2
STS2
STS21
STS21
STS5
STS5
STS51
STS51
STS7
STS7

Chemical composition(mass fraction)(wt.%) of the STS8

C(%) Si(%) Mn(%) Cr(%)
1.30-1.50 ≤0.35 ≤0.50 0.20-0.50

Mechanical Properties of steel grade STS8

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)
847 (≥) 976 (≥) 12 22 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade STS8

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
14 - -     0.24 -  
839 515 - 14.3 431   -  
929 - 31 34.2   332 212

Heat Treatment of steel grade STS8

Heat treated : 1798°C - 1311°C

Technological Curves of steel grade STS8

Cross Reference Table (Equivalent Grade) of STS8

Grade Standard Country Application
STS8 KS Korea Carbide for cutting tools

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