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Description

Korea KS D 3691 (2001), STS630FB Specialsteel Stainless steel blooms and billets for forgings and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: STS630FB
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel STS630FB Precipitation-Hardening KS Korea Stainless steel blooms and billets for forgings

Chemical composition(mass fraction)(wt.%) of the STS630FB

C Si Mn P S Cr Ni Mo N Cu Nb
≤0.07 ≤1.00 ≤1.00 ≤0.040 ≤0.030 15.00 -17.00 3.00 -5.00 ≤ ≥ ≤ ≥ 3.00 -5.00 0.15 -0.45

Mechanical Properties of steel grade STS630FB

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)
216 (≥) 595 (≥) 42 42 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade STS630FB

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
12 - -     0.33 -  
172 886 - 34.3 414   -  
448 - 11 23.2   443 333

Heat Treatment of steel grade STS630FB

Heat treated : 1469°C - 1414°C

Technological Curves of steel grade STS630FB

Cross Reference Table (Equivalent Grade) of STS630FB

Grade Standard Country Application
STS630
STS630

Relevant standard of STS630FB

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

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