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SA-249 TP304LN

Description

USA AMS SA-249/SA-249M, SA-249 TP304LN 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 TP304LN
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SA-249 TP304LN Austenite AMS USA Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes

Chemical composition(mass fraction)(wt.%) of the SA-249 TP304LN

C Si Mn P S Cr Ni N
≤0.03 ≤1.00 ≤2.00 ≤0.045 ≤0.03 18.0 -20.0 8.00 -12.0 0.10 -0.16

Mechanical Properties of steel grade SA-249 TP304LN

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)
911 (≥) 879 (≥) 13 34 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade SA-249 TP304LN

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 - -     0.43 -  
976 579 - 24.3 133   -  
783 - 12 34.2   232 222

Heat Treatment of steel grade SA-249 TP304LN

Heat treated : 1959°C - 1521°C

Technological Curves of steel grade SA-249 TP304LN

Cross Reference Table (Equivalent Grade) of SA-249 TP304LN

Relevant standard of SA-249 TP304LN

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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