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STS631

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STS630 STS317J5L
#STS631

Description

Korea KS STS631 martensitic steel and STS631 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Heat-Resistant Steel: STS631
Category Type Steel Grade Standard Country Application
Steel GradesHeat-Resistant Steel STS631 KS Korea martensitic steel
STS420J1
STS420J2
STS420F
STS420F2
STS431
STS440A
STS440B
STS440C
STS440F
STS630

Chemical composition(mass fraction)(wt.%) of the STS631

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Al(%)
Max 0.09 Max 1.00 Max 1.00 Max 0.04 Max 0.03 16.0-18.0 6.50-7.75 0.75-1.50

Mechanical Properties of steel grade STS631

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)
731 (≥) 252 (≥) 43 13 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade STS631

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
32 - -     0.23 -  
642 223 - 22.3 234   -  
746 - 11 13.2   344 421

Heat Treatment of steel grade STS631

Heat treated : 1367°C - 1246°C

Technological Curves of steel grade STS631

Cross Reference Table (Equivalent Grade) of STS631

Grade Standard Country Application
STS631 KS Korea martensitic steel
STS631 KS Korea martensitic steel
STS630 STS317J5L
Available Suppliers
Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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