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USA UNS SAE J 405 (1998), 308 Specialsteel Chemical compositions of SAE wrought stainless steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 308
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 308 Austenite UNS USA Chemical compositions of SAE wrought stainless steels

Chemical composition(mass fraction)(wt.%) of the 308

C Si Mn P S Cr Ni
≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 19.0 -21.0 10.0 -12.0

Mechanical Properties of steel grade 308

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)
399 (≥) 724 (≥) 21 21 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 213

Physical Properties of steel grade 308

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 - -     0.22 -  
872 131 - 23.3 214   -  
927 - 14 24.2   211 123

Heat Treatment of steel grade 308

Heat treated : 1994°C - 1299°C

Technological Curves of steel grade 308

Cross Reference Table (Equivalent Grade) of 308

Relevant standard of 308

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

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