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SA-249 S30908

Description

USA AMS SA-249/SA-249M, SA-249 S30908 Specialsteel Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: SA-249 S30908
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SA-249 S30908 Austenite AMS USA Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes

Chemical composition(mass fraction)(wt.%) of the SA-249 S30908

C Si Mn P S Cr Ni
≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 22.0 -24.0 12.0 -15.0

Mechanical Properties of steel grade SA-249 S30908

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)
588 (≥) 383 (≥) 22 12 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade SA-249 S30908

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
22 - -     0.31 -  
837 488 - 43.3 231   -  
125 - 41 44.2   221 231

Heat Treatment of steel grade SA-249 S30908

Heat treated : 1764°C - 1237°C

Technological Curves of steel grade SA-249 S30908

Cross Reference Table (Equivalent Grade) of SA-249 S30908

Relevant standard of SA-249 S30908

SA-249/SA-249M Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes SA-249-SA-249M.pdf

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