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Description

Korea KS STS431 martensitic steel and STS431 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: STS431
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy STS431 KS Korea martensitic steel
STSXM27
STS403
STS410
STS41oJl
STS41OF2
STS416
STS420J1
STS420J2
STS420F
STS420F2

Chemical composition(mass fraction)(wt.%) of the STS431

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%)
Max 0.20 Max 1.00 Max 1.00 Max 0.04 Max 0.03 15.O-17.0 1.25-2.50

Mechanical Properties of steel grade STS431

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)
851 (≥) 114 (≥) 24 23 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical Properties of steel grade STS431

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
42 - -     0.44 -  
978 141 - 43.3 313   -  
979 - 13 34.2   424 143

Heat Treatment of steel grade STS431

Heat treated : 1494°C - 1795°C

Technological Curves of steel grade STS431

Cross Reference Table (Equivalent Grade) of STS431

Grade Standard Country Application
STS431 KS Korea martensitic steel
STS431 KS Korea martensitic steel

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