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STS440B

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STS440A STS440C
#STS440B

Description

Korea KS STS440B martensitic steel and STS440B Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 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

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 of steel 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)
879 (≥) 193 (≥) 11 21 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade STS440B

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 - -     0.34 -  
298 239 - 41.3 423   -  
554 - 33 31.2   324 412

Heat Treatment of steel grade STS440B

Heat treated : 1816°C - 1736°C

Technological Curves of steel grade STS440B

Cross Reference Table (Equivalent Grade) of STS440B

Grade Standard Country Application
STS440B KS Korea martensitic steel
STS440B KS Korea martensitic steel
STS440A STS440C
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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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