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Description

Japan JIS G 4311 (2011), SUH 661 Specialsteel Heat-resisting steel bars and wire rods and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: SUH 661
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SUH 661 Austenite JIS Japan Heat-resisting steel bars and wire rods

Chemical composition(mass fraction)(wt.%) of the SUH 661

C Si Mn P S Cr Ni Mo W Co Nb N
0.08 -0.16 ≤1.00 1.00 -2.00 ≤0.04 ≤0.03 20.00 -22.50 19.00 -21.00 2.50 -3.50 2.00 -3.00 18.50 -21.00 0.75 -1.25 0.10 -0.20

Mechanical Properties of steel grade SUH 661

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)
321 (≥) 632 (≥) 31 34 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade SUH 661

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
14 - -     0.12 -  
936 951 - 42.3 224   -  
445 - 11 11.2   322 111

Heat Treatment of steel grade SUH 661

Heat treated : 1886°C - 1853°C

Technological Curves of steel grade SUH 661

Relevant standard of SUH 661

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

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