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America ASTM A249800 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: A249800 / A249 800
Category Grade Standard Region/Area Standard Content
Metals A249 800 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 800

Element Min Max Similar
C - 0.1000 -
Mn - 1.5000 -
P - 0.0450 -
S - 0.0150 -
Si - 1.0000 -
Ni 30.0000 35.0000 -
Cr 19.0000 23.0000 -
Cu - 0.7500 -
Ti 0.1500 0.6000 -
Al 0.1500 0.6000 -
Fe 39.5000 - -

Mechanical Properties of steel grade A249 800

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)
293 (≥) 212 (≥) 12 24 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

Physical Properties of steel grade A249 800

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 - -     0.14 -  
757 229 - 32.3 111   -  
939 - 22 33.2   224 443

Heat Treatment of steel grade A249 800

Heat treated : 1139°C - 1116°C

Technological Curves of steel grade A249 800

Cross Reference Table (Equivalent Grade) of A249 800

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