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Description

Korea KS STS420F martensitic steel and STS420F Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Heat-Resistant Steel: STS420F
Category Type Steel Grade Standard Country Application
Steel GradesHeat-Resistant Steel STS420F KS Korea martensitic steel
STS434
STS447J1
STSXM27
STS403
STS410
STS41oJl
STS41OF2
STS416
STS420J1
STS420J2

Chemical composition(mass fraction)(wt.%) of the STS420F

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%)
O.26-0.40 Max 1.00 Max 1.00 Max 0.06 Max 0.15 12.O-14.O Max 0.60 Max 0.60

Mechanical Properties of steel grade STS420F

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)
433 (≥) 734 (≥) 24 22 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

Physical Properties of steel grade STS420F

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
43 - -     0.44 -  
182 537 - 24.3 313   -  
681 - 34 24.2   144 443

Heat Treatment of steel grade STS420F

Heat treated : 1536°C - 1396°C

Technological Curves of steel grade STS420F

Cross Reference Table (Equivalent Grade) of STS420F

Grade Standard Country Application
STS420F KS Korea martensitic steel
STS420F KS Korea martensitic steel
STS420F2 KS Korea martensitic steel
STS420F2 KS Korea martensitic steel

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