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Description

Japan JIS G 4311 (2011), SUH 309 Specialsteel Heat-resisting steel bars and wire rods and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: SUH 309
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SUH 309 Austenite JIS Japan Heat-resisting steel bars and wire rods

Chemical composition(mass fraction)(wt.%) of the SUH 309

C Si Mn P S Cr Ni Mo
≤0.20 ≤1.00 ≤2.00 ≤0.04 ≤0.03 22.00 -24.00 12.00 -15.00 ≤ ≥

Mechanical Properties of steel grade SUH 309

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)
327 (≥) 432 (≥) 32 24 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical Properties of steel grade SUH 309

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
41 - -     0.14 -  
182 716 - 23.3 312   -  
749 - 23 11.2   132 123

Heat Treatment of steel grade SUH 309

Heat treated : 1372°C - 1556°C

Technological Curves of steel grade SUH 309

Relevant standard of SUH 309

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

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