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STS420J2FB

Description

Korea KS D 3691 (2001), STS420J2FB Specialsteel Stainless steel blooms and billets for forgings and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: STS420J2FB
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel STS420J2FB Martensite KS Korea Stainless steel blooms and billets for forgings

Chemical composition(mass fraction)(wt.%) of the STS420J2FB

C Si Mn P S Cr Ni Mo N
0.26 -0.40 ≤1.00 ≤1.00 ≤0.040 ≤0.030 12.00 -14.00 ≤0.60 ≤ ≥ ≤ ≥

Mechanical Properties of steel grade STS420J2FB

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)
939 (≥) 924 (≥) 11 44 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade STS420J2FB

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
21 - -     0.43 -  
844 452 - 21.3 224   -  
141 - 21 43.2   241 414

Heat Treatment of steel grade STS420J2FB

Heat treated : 1236°C - 1617°C

Technological Curves of steel grade STS420J2FB

Cross Reference Table (Equivalent Grade) of STS420J2FB

Grade Standard Country Application
STS420J2
STS420J2

Relevant standard of STS420J2FB

D 3691 (2001) Stainless steel blooms and billets for forgings D-3691-(2001).pdf

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