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A 249 TP309HCb

Description

USA SAE A 249/A 249M (2010), A 249 TP309HCb 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 TP309HCb
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 249 TP309HCb Austenite SAE USA Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes

Chemical composition(mass fraction)(wt.%) of the A 249 TP309HCb

C Si Mn P S Cr Ni Nb
0.04 -0.10 ≤0.75 ≤2.00 ≤0.045 ≤0.03 22.0 -24.0 12.0 -16.0 ≤1.100

Mechanical Properties of steel grade A 249 TP309HCb

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)
555 (≥) 531 (≥) 43 22 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade A 249 TP309HCb

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 - -     0.42 -  
365 911 - 11.3 143   -  
558 - 33 34.2   412 323

Heat Treatment of steel grade A 249 TP309HCb

Heat treated : 1725°C - 1184°C

Technological Curves of steel grade A 249 TP309HCb

Cross Reference Table (Equivalent Grade) of A 249 TP309HCb

Relevant standard of A 249 TP309HCb

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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