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USA UNS SAE J 452, 308 Specialsteel Chemical compositions, mechanical and physical properties of SAE aluminum casting alloys 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, mechanical and physical properties of SAE aluminum casting alloys

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)
382 (≥) 843 (≥) 31 11 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

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
23 - -     0.24 -  
871 735 - 22.3 234   -  
695 - 33 34.2   234 312

Heat Treatment of steel grade 308

Heat treated : 1771°C - 1162°C

Technological Curves of steel grade 308

Cross Reference Table (Equivalent Grade) of 308

Relevant standard of 308

SAE J 452 Chemical compositions, mechanical and physical properties of SAE aluminum casting alloys SAE-J-452.pdf

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