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A739 Grade B 22

America ASTM A739GradeB22 升温或/和加压部件用热轧合金钢棒 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A739GradeB22 / A739 Grade B 22
Category Grade Standard Region/Area Standard Content
Metals A739 Grade B 22 ASTM A739 America 升温或/和加压部件用热轧合金钢棒

Chemical composition(mass fraction)(wt.%) of the A739 Grade B 22

Element Min Max Similar
Mo 0.9000 1.1000 -
Cr 2.0000 2.5000 -
P - 0.0350 -
S - 0.0400 -
Mn 0.3000 0.6000 -
Si - 0.5000 -
C 0.0500 0.1500 -
Si - 0.5000 -
S - 0.0400 -
P - 0.0350 -
Mo 0.9000 1.1000 -
Mn 0.3000 0.6000 -
Cr 2.0000 2.5000 -
C 0.0500 0.1500 -

Mechanical Properties of steel grade A739 Grade B 22

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)
286 (≥) 158 (≥) 11 43 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade A739 Grade B 22

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 - -     0.42 -  
113 997 - 12.3 321   -  
335 - 33 31.2   443 243

Heat Treatment of steel grade A739 Grade B 22

Heat treated : 1133°C - 1976°C

Technological Curves of steel grade A739 Grade B 22

Cross Reference Table (Equivalent Grade) of A739 Grade B 22

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