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SA 249 S30940

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S30940 SA-240 S30940
#309SCb

Description

USA AMS SA-249/SA-249M , SA 249 S30940 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 S30940
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SA 249 S30940 Austenite AMS USA Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes

Chemical composition(mass fraction)(wt.%) of the SA 249 S30940

C Si Mn P S Cr Ni Nb+Ta
≤0.08 ≤1.00 ≤2.00 ≤0.04 ≤0.03 22.0 -24.0 12.0 -16.0 ≤1.10

Mechanical Properties of steel grade SA 249 S30940

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)
895 (≥) 921 (≥) 14 13 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade SA 249 S30940

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
24 - -     0.11 -  
343 174 - 33.3 423   -  
326 - 42 41.2   221 244

Heat Treatment of steel grade SA 249 S30940

Heat treated : 1642°C - 1457°C

Technological Curves of steel grade SA 249 S30940

Relevant standard of SA 249 S30940

SA-249/SA-249M Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes SA-249-SA-249M-.pdf
S30940 SA-240 S30940
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