A 249 S31254 Stainless Steels to A 249/A 249M (2010)

A 249 S31254 - Specification & Application

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

Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes

Chemical composition(wt.%) of A 249 S31254 grade: to A 249/A 249M (2010)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.02
Mn - 1.00
Si - 0.80
P - 0.03
S - 0.01
Cr 19.50 20.50
Ni 17.50 18.50
Mo 6.00 6.50
Cu 0.50 1.00
N 0.18 0.22

A 249 S31254 - Detail

Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes

Mechanical properties of grade A 249 S31254 A 249/A 249M (2010)

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
593 (≥) 816 (≥) 12 12 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical properties of grade A 249 S31254 A 249/A 249M (2010)

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
835 (≥) 774 (≥) 44 33 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 211
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
737 964 114

Equivalent Products

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