SA-409 S31725 Stainless Steels to SA-409/SA-409M

SA-409 S31725 - Specification & Application

  • SA-409/SA-409M - Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service

Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service

Chemical composition(wt.%) of SA-409 S31725 grade: to SA-409/SA-409M

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.03
Mn - 2.00
Si - 0.75
P - 0.045
S - 0.03
Cr 18.00 20.00
Ni 13.50 17.50
Mo 4.00 5.00
Cu - 0.75
N - 0.10

SA-409 S31725 - Detail

Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service

Mechanical properties of grade SA-409 S31725 SA-409/SA-409M

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)
861 (≥) 245 (≥) 33 14 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical properties of grade SA-409 S31725 SA-409/SA-409M

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
666 (≥) 162 (≥) 23 31 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 311
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
346 176 714

Equivalent Products

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