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A672 Grade L 70

America ASTM A672GradeL70 中温高压用电熔焊钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A672GradeL70 / A672 Grade L 70
Category Grade Standard Region/Area Standard Content
Metals A672 Grade L 70 ASTM A672 America 中温高压用电熔焊钢管

Chemical composition(mass fraction)(wt.%) of the A672 Grade L 70

Element Min Max Similar
C - 0.2000 -
Mn - 0.9000 -
P - 0.0250 -
S - 0.0250 -
Si 0.1500 0.4000 -
Mo 0.4500 0.6000 -
Si 0.1300 0.4500 -
S - 0.0350 -
P - 0.0350 -
Mo 0.4100 0.6400 -
Mn - 0.9800 -
C - 0.2000 -

Mechanical Properties of steel grade A672 Grade L 70

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)
167 (≥) 764 (≥) 43 33 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade A672 Grade L 70

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
24 - -     0.33 -  
858 871 - 14.3 313   -  
925 - 32 44.2   221 141

Heat Treatment of steel grade A672 Grade L 70

Heat treated : 1811°C - 1233°C

Technological Curves of steel grade A672 Grade L 70

Cross Reference Table (Equivalent Grade) of A672 Grade L 70

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