SA-409 TP304L Stainless Steels to SA-409/SA-409M

SA-409 TP304L - 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 TP304L grade: to SA-409/SA-409M

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.030
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.03
Cr 18.00 20.00
Ni 8.00 13.00

SA-409 TP304L - Detail

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

Mechanical properties of grade SA-409 TP304L 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)
962 (≥) 886 (≥) 23 23 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical properties of grade SA-409 TP304L 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
861 (≥) 671 (≥) 34 14 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 334
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
622 356 978
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