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A249 Type 321

America ASTM A249Type321 锅炉、过热器、换热器和冷凝器用焊接奥氏体钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A249Type321 / A249 Type 321
Category Grade Standard Region/Area Standard Content
Metals A249 Type 321 ASTM A249/A249M America 锅炉、过热器、换热器和冷凝器用焊接奥氏体钢管

Chemical composition(mass fraction)(wt.%) of the A249 Type 321

Element Min Max Similar

Mechanical Properties of steel grade A249 Type 321

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)
386 (≥) 119 (≥) 32 24 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade A249 Type 321

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
43 - -     0.41 -  
692 892 - 13.3 424   -  
849 - 32 32.2   243 324

Heat Treatment of steel grade A249 Type 321

Heat treated : 1871°C - 1724°C

Technological Curves of steel grade A249 Type 321

Cross Reference Table (Equivalent Grade) of A249 Type 321

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