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SA-350 Grade LF787 Class 3

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America ASME SA-350GradeLF787Class3 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.

Datasheet for: Metals: SA-350GradeLF787Class3 / SA-350 Grade LF787 Class 3
Category Grade Standard Region/Area Standard Content
Metals SA-350 Grade LF787 Class 3 ASME SA-350/SA-350M 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 SA-350 Grade LF787 Class 3

Element Min Max Similar
V - 0.0300 -
Si - 0.4000 -
S - 0.0250 -
P - 0.0250 -
Ni 0.7000 1.0000 -
Nb 0.0200 - -
Mo 0.1500 0.2500 -
Mn 0.4000 0.7000 -
Cu 1.0000 1.3000 -
Cr 0.6000 0.9000 -
C - 0.0700 -

Mechanical Properties of steel grade SA-350 Grade LF787 Class 3

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)
993 (≥) 257 (≥) 44 12 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade SA-350 Grade LF787 Class 3

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
23 - -     0.32 -  
951 449 - 44.3 111   -  
218 - 12 32.2   444 133

Heat Treatment of steel grade SA-350 Grade LF787 Class 3

Heat treated : 1143°C - 1582°C

Technological Curves of steel grade SA-350 Grade LF787 Class 3

Cross Reference Table (Equivalent Grade) of SA-350 Grade LF787 Class 3

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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