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A 249 N08904

Description

USA SAE A 249/A 249M (2010), A 249 N08904 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 N08904
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 249 N08904 Austenite SAE USA Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes

Chemical composition(mass fraction)(wt.%) of the A 249 N08904

C Mn Si P S Cr Ni Mo Cu
≤0.02 ≤2.00 ≤1.00 ≤0.045 ≤0.035 19.00 -23.00 23.00 -28.00 4.00 -5.00 1.00 -2.00

Mechanical Properties of steel grade A 249 N08904

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)
718 (≥) 532 (≥) 23 34 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade A 249 N08904

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
34 - -     0.33 -  
279 695 - 24.3 432   -  
647 - 42 32.2   143 422

Heat Treatment of steel grade A 249 N08904

Heat treated : 1668°C - 1463°C

Technological Curves of steel grade A 249 N08904

Cross Reference Table (Equivalent Grade) of A 249 N08904

Grade Standard Country Application
904L
INCO alloy 904L
904L
904L(N08904)
N08904
N08904
N08904
UNS N08904

Relevant standard of A 249 N08904

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

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