STS440B

This page provides STS440B datasheet, STS440B mechanical properties, chemical element STS440B, technical specifications of STS440B steel material properties. STS440B performance specifications.

KS STS440B
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy STS440B KS Korea martensitic steel
STS410
STS41oJl
STS41OF2
STS416
STS420J1
STS420J2
STS420F
STS420F2
STS431
STS440A
Datasheet for:Steel Grades:Special Alloy:STS440B

Chemical composition(mass fraction)(wt.%) of the STS440B

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%)
O.75-0.95 Max 1.00 Max 1.00 Max 0.04 Max 0.03 16.0-18.O Max 0.60 Max O.75

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade STS440B

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)
119 (≥) 931 (≥) 22 41 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 324
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
44 - -     0.11 -  
889 674 - 24.3 444   -  
587 - 22 23.2   323 223
Heat treated : 1121°C - 1893°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
STS440B KS Korea
martensitic steel
STS440B KS Korea
martensitic steel
STS440B

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