STF7

This page provides STF7 datasheet, STF7 mechanical properties, chemical element STF7, technical specifications of STF7 steel material properties. STF7 performance specifications.

KS STF7
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy STF7 KS Korea Carbide for cutting tools
STD6
STD61
STD61
STD62
STD62
STF3
STF3
STF4
STF4
STF7
Datasheet for:Steel Grades:Tool Steel And Hard Alloy:STF7

Chemical composition(mass fraction)(wt.%) of the STF7

C(%) Si(%) Mn(%) Cr(%) Mo(%) V(%)
0.28-0.38 ≤0.50 ≤0.60 2.50-3.50 2.50-3.00 0.40-0.70

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade STF7

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)
989 (≥) 729 (≥) 13 32 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 422
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
33 - -     0.14 -  
598 336 - 43.3 331   -  
679 - 23 42.2   421 224
Heat treated : 1924°C - 1777°C
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
STF7 KS Korea
Carbide for cutting tools
STF7 KS Korea
Carbide for cutting tools
STF7

Haihong International Trade (HK) CO., Limited

Stainless Steel, Special Steel, Compressor Blading, Turbine Blading, Superalloy Supplier.
STF7 can be supplied as steel plate/ sheet, round steel bar, steel tube/pipe, steel stripe, steel billet, steel ingot, steel wire rods. electroslag, forged ring/ block,etc.
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