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A249 Type 304N

America ASTM A249Type304N 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: A249Type304N / A249 Type 304N
Category Grade Standard Region/Area Standard Content
Metals A249 Type 304N 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 304N

Element Min Max Similar
Si - 1.0000 -
S - 0.0300 -
P - 0.0450 -
Ni 8.0000 11.0000 -
N 0.1000 0.1600 -
Mn - 2.0000 -
Cr 18.0000 20.0000 -
C - 0.0800 -

Mechanical Properties of steel grade A249 Type 304N

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)
489 (≥) 271 (≥) 24 14 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade A249 Type 304N

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
13 - -     0.33 -  
484 324 - 31.3 423   -  
955 - 22 24.2   441 332

Heat Treatment of steel grade A249 Type 304N

Heat treated : 1887°C - 1324°C

Technological Curves of steel grade A249 Type 304N

Cross Reference Table (Equivalent Grade) of A249 Type 304N

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