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SA-249 S31726

Description

USA AMS SA-249/SA-249M, SA-249 S31726 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 S31726
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SA-249 S31726 Austenite AMS USA Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes

Chemical composition(mass fraction)(wt.%) of the SA-249 S31726

C Mn Si P S Cr Ni Mo Cu N
≤0.03 ≤2.00 ≤0.75 ≤0.045 ≤0.03 17.00 -20.00 13.50 -17.50 4.00 -5.00 ≤0.75 0.10 -0.20

Mechanical Properties of steel grade SA-249 S31726

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)
781 (≥) 649 (≥) 13 12 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade SA-249 S31726

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
12 - -     0.12 -  
847 518 - 31.3 224   -  
733 - 42 14.2   122 134

Heat Treatment of steel grade SA-249 S31726

Heat treated : 1393°C - 1139°C

Technological Curves of steel grade SA-249 S31726

Cross Reference Table (Equivalent Grade) of SA-249 S31726

Grade Standard Country Application
S31726
S31726
S31726
S31726
S31726
S31726
S31726
17-14-4LN(S31726)

Relevant standard of SA-249 S31726

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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