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Description

Japan JIS G 4311 (2011), SUS 631 Specialsteel Heat-resisting steel bars and wire rods and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: SUS 631
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SUS 631 Precipitation-Hardening JIS Japan Heat-resisting steel bars and wire rods

Chemical composition(mass fraction)(wt.%) of the SUS 631

C Si Mn P S Cr Ni Mo N Al
≤0.09 ≤1.00 ≤1.00 ≤0.04 ≤0.03 16.00 -18.00 6.50 -7.75 ≤ ≥ ≤ ≥ 0.75 -1.50

Mechanical Properties of steel grade SUS 631

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)
591 (≥) 858 (≥) 34 44 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade SUS 631

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
23 - -     0.43 -  
324 273 - 24.3 131   -  
493 - 14 31.2   243 331

Heat Treatment of steel grade SUS 631

Heat treated : 1123°C - 1988°C

Technological Curves of steel grade SUS 631

Relevant standard of SUS 631

G 4311 (2011) Heat-resisting steel bars and wire rods G-4311-(2011).pdf

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