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A194 Grade 8M

America ASTM A194Grade8M 高温和高压设备用碳素钢与合金钢螺栓和螺母的规格 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A194Grade8M / A194 Grade 8M
Category Grade Standard Region/Area Standard Content
Metals A194 Grade 8M ASTM A194/A194M America 高温和高压设备用碳素钢与合金钢螺栓和螺母的规格

Chemical composition(mass fraction)(wt.%) of the A194 Grade 8M

Element Min Max Similar
C - 0.0800 -
Mn - 2.0000 -
P - 0.0450 -
S - 0.0300 -
Si - 1.0000 -
Ni 10.0000 14.0000 -
Cr 16.0000 18.0000 -
Mo 2.0000 3.0000 -
Si - 1.0000 -
S - 0.0300 -
P - 0.0450 -
Ni 10.0000 14.0000 -
Mo 2.0000 3.0000 -
Mn - 2.0000 -
Cr 16.0000 18.0000 -
C - 0.0800 -

Mechanical Properties of steel grade A194 Grade 8M

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)
624 (≥) 538 (≥) 33 42 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 431

Physical Properties of steel grade A194 Grade 8M

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 - -     0.41 -  
338 827 - 31.3 224   -  
991 - 33 42.2   122 324

Heat Treatment of steel grade A194 Grade 8M

Heat treated : 1574°C - 1298°C

Technological Curves of steel grade A194 Grade 8M

Cross Reference Table (Equivalent Grade) of A194 Grade 8M

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