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A983 Grade 7A

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America ASTM A983Grade7A 中速柴油发动机用连续晶粒流向锻制的碳素钢及合金钢曲轴技术规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A983Grade7A / A983 Grade 7A
Category Grade Standard Region/Area Standard Content
Metals A983 Grade 7A ASTM A983/A983M America 中速柴油发动机用连续晶粒流向锻制的碳素钢及合金钢曲轴技术规范

Chemical composition(mass fraction)(wt.%) of the A983 Grade 7A

Element Min Max Similar
V - 0.1000 -
Si 0.1500 0.4000 -
S - 0.0250 -
P - 0.0250 -
Mo 0.3000 0.5000 -
Mn 0.4000 1.0000 -
Cr 2.8000 3.3000 -
C 0.3800 0.4800 -

Mechanical Properties of steel grade A983 Grade 7A

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)
432 (≥) 993 (≥) 42 22 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade A983 Grade 7A

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
11 - -     0.24 -  
538 978 - 23.3 244   -  
737 - 33 41.2   243 133

Heat Treatment of steel grade A983 Grade 7A

Heat treated : 1917°C - 1871°C

Technological Curves of steel grade A983 Grade 7A

Cross Reference Table (Equivalent Grade) of A983 Grade 7A

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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