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USA UNS SAE J 405 (1998) , 309H Specialsteel Chemical compositions of SAE wrought stainless steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 309H
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 309H Austenite UNS USA Chemical compositions of SAE wrought stainless steels

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

C Si Mn P S Cr Ni
≤0.08 ≤0.75 ≤2.00 ≤0.045 ≤0.030 22.0 -24.0 12.0 -15.0

Mechanical Properties of steel grade 309H

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)
537 (≥) 766 (≥) 14 32 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade 309H

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
11 - -     0.32 -  
128 896 - 21.3 312   -  
766 - 24 21.2   213 131

Heat Treatment of steel grade 309H

Heat treated : 1829°C - 1283°C

Technological Curves of steel grade 309H

Cross Reference Table (Equivalent Grade) of 309H

Relevant standard of 309H

SAE J 405 (1998) Chemical compositions of SAE wrought stainless steels SAE-J-405--(1998)-.pdf

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