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A249 Type XM-19

America ASTM A249TypeXM-19 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: A249TypeXM-19 / A249 Type XM-19
Category Grade Standard Region/Area Standard Content
Metals A249 Type XM-19 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 XM-19

Element Min Max Similar
V 0.1000 0.3000 -
Si - 1.0000 -
S - 0.0300 -
P - 0.0450 -
Ni 11.5000 13.5000 -
N 0.2000 0.4000 -
Mo 1.5000 3.0000 -
Mn 4.0000 6.0000 -
Cr 20.5000 23.5000 -
Cb 0.1000 0.3000 -
C - 0.0600 -

Mechanical Properties of steel grade A249 Type XM-19

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)
261 (≥) 262 (≥) 21 21 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical Properties of steel grade A249 Type XM-19

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
31 - -     0.12 -  
112 465 - 12.3 241   -  
281 - 11 11.2   322 333

Heat Treatment of steel grade A249 Type XM-19

Heat treated : 1362°C - 1666°C

Technological Curves of steel grade A249 Type XM-19

Cross Reference Table (Equivalent Grade) of A249 Type XM-19

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