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SA-312 Grade TP 309

America ASME SA-312GradeTP309 Specification for Seamless and Welded Austenitic Stainless Steel Pipes and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals SA-312 Grade TP 309 ASME SA-312/SA-312M America Specification for Seamless and Welded Austenitic Stainless Steel Pipes

Chemical composition(mass fraction)(wt.%) of the SA-312 Grade TP 309

Element Min Max Similar
Si - 0.7500 -
S - 0.0300 -
P - 0.0400 -
Ni 12.0000 15.0000 -
Mn - 2.0000 -
Cr 22.0000 24.0000 -
C - 0.1500 -

Mechanical Properties of steel grade SA-312 Grade TP 309

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)
865 (≥) 476 (≥) 31 43 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical Properties of steel grade SA-312 Grade TP 309

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
24 - -     0.12 -  
773 232 - 43.3 123   -  
455 - 42 14.2   131 222

Heat Treatment of steel grade SA-312 Grade TP 309

Heat treated : 1229°C - 1999°C

Technological Curves of steel grade SA-312 Grade TP 309

Cross Reference Table (Equivalent Grade) of SA-312 Grade TP 309

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