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A350 Grade LF3 Class 1

America ASTM A350GradeLF3Class1 碳和低合金钢锻件,要求切口韧性试验的管道部件 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals A350 Grade LF3 Class 1 ASTM A350/A350M America 碳和低合金钢锻件,要求切口韧性试验的管道部件

Chemical composition(mass fraction)(wt.%) of the A350 Grade LF3 Class 1

Element Min Max Similar
V - 0.0300 -
Si 0.2000 0.3500 -
S - 0.0400 -
P - 0.0350 -
Ni 3.3000 3.7000 -
Nb - 0.0200 -
Mo - 0.1200 -
Mn - 0.9000 -
Cu - 0.4000 -
Cr+Mo - 0.3200 -
Cr - 0.3000 -
C - 0.2000 -

Mechanical Properties of steel grade A350 Grade LF3 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)
764 (≥) 319 (≥) 33 11 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade A350 Grade LF3 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
42 - -     0.14 -  
469 686 - 22.3 331   -  
243 - 43 31.2   231 213

Heat Treatment of steel grade A350 Grade LF3 Class 1

Heat treated : 1746°C - 1487°C

Technological Curves of steel grade A350 Grade LF3 Class 1

Cross Reference Table (Equivalent Grade) of A350 Grade LF3 Class 1

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