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A 249 S30940

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A 240 S30940 A 276 S30940
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Description

USA SAE A 249/A 249M (2010), A 249 S30940 Specialsteel Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: A 249 S30940
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 249 S30940 Austenite SAE USA Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes

Chemical composition(mass fraction)(wt.%) of the A 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 A 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)
796 (≥) 947 (≥) 24 44 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade A 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
42 - -     0.12 -  
621 373 - 24.3 314   -  
125 - 21 24.2   422 142

Heat Treatment of steel grade A 249 S30940

Heat treated : 1129°C - 1752°C

Technological Curves of steel grade A 249 S30940

Relevant standard of A 249 S30940

A 249/A 249M (2010) Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes A-249-A-249M--(2010).pdf
A 240 S30940 A 276 S30940
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