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A320 B8M Class 1

America ASTM A320B8MClass1 低温用合金钢螺栓材料规格 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A320B8MClass1 / A320 B8M Class 1
Category Grade Standard Region/Area Standard Content
Metals A320 B8M Class 1 ASTM A320/A320M America 低温用合金钢螺栓材料规格

Chemical composition(mass fraction)(wt.%) of the A320 B8M Class 1

Element Min Max Similar

Mechanical Properties of steel grade A320 B8M Class 1

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)
549 (≥) 974 (≥) 22 43 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical Properties of steel grade A320 B8M Class 1

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 - -     0.13 -  
541 424 - 23.3 133   -  
634 - 44 34.2   122 223

Heat Treatment of steel grade A320 B8M Class 1

Heat treated : 1967°C - 1144°C

Technological Curves of steel grade A320 B8M Class 1

Cross Reference Table (Equivalent Grade) of A320 B8M Class 1

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