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A312 Type 309

America ASTM A312Type309 无缝和焊接奥氏体不锈钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A312Type309 / A312 Type 309
Category Grade Standard Region/Area Standard Content
Metals A312 Type 309 ASTM A312/A312M America 无缝和焊接奥氏体不锈钢管

Chemical composition(mass fraction)(wt.%) of the A312 Type 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 A312 Type 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)
397 (≥) 777 (≥) 44 22 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade A312 Type 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
21 - -     0.41 -  
647 142 - 14.3 431   -  
195 - 23 43.2   432 114

Heat Treatment of steel grade A312 Type 309

Heat treated : 1117°C - 1533°C

Technological Curves of steel grade A312 Type 309

Cross Reference Table (Equivalent Grade) of A312 Type 309

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