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Description

Korea KS STS420F2 martensitic steel and STS420F2 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Heat-Resistant Steel: STS420F2
Category Type Steel Grade Standard Country Application
Steel GradesHeat-Resistant Steel STS420F2 KS Korea martensitic steel
STS447J1
STSXM27
STS403
STS410
STS41oJl
STS41OF2
STS416
STS420J1
STS420J2
STS420F

Chemical composition(mass fraction)(wt.%) of the STS420F2

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%)
O.26-0.40 Max 1.00 Max 1.00 Max 0.04 Max 0.03 12.0-14.0 Max 0.60

Mechanical Properties of steel grade STS420F2

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)
526 (≥) 672 (≥) 34 41 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade STS420F2

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 - -     0.31 -  
599 258 - 13.3 144   -  
229 - 44 24.2   223 313

Heat Treatment of steel grade STS420F2

Heat treated : 1449°C - 1457°C

Technological Curves of steel grade STS420F2

Cross Reference Table (Equivalent Grade) of STS420F2

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

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