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Description

Korea KS STS31 Carbide for cutting tools and STS31 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: STS31
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy STS31 KS Korea Carbide for cutting tools
STS4
STS41
STS41
STS43
STS43
STS44
STS44
STS3
STS3
STS31

Chemical composition(mass fraction)(wt.%) of the STS31

C(%) Si(%) Mn(%) Cr(%)
0.95-1.05 ≤0.35 0.90-1.20 0.80-1.20

Mechanical Properties of steel grade STS31

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)
867 (≥) 963 (≥) 14 31 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade STS31

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
24 - -     0.21 -  
826 612 - 23.3 121   -  
718 - 24 34.2   131 144

Heat Treatment of steel grade STS31

Heat treated : 1182°C - 1847°C

Technological Curves of steel grade STS31

Cross Reference Table (Equivalent Grade) of STS31

Grade Standard Country Application
STS31 KS Korea Carbide for cutting tools
STS31 KS Korea Carbide for cutting tools
STS317J5L KS Korea Austenitic Steel
STS317J5L KS Korea Austenitic Steel
STS317LN KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS310S KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS316 KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS316L KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS316LN KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS316Ti KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS316J1 KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS316J1L KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS317 KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS317L KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS317J1 KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS317J4L KS Korea KS standard austenite stainless steel bars(KS D3706-1992)
STS316TKA KS Korea KS standard mechanical and structure with stainless steel pipe(KS D3536-1992)
STS316TKC KS Korea KS standard mechanical and structure with stainless steel pipe(KS D3536-1992)

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