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A470 Class 4

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America ASTM A470Class4 涡轮机转子和轴用经真空处理的碳素钢和合金锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A470Class4 / A470 Class 4
Category Grade Standard Region/Area Standard Content
Metals A470 Class 4 ASTM A470/A470M America 涡轮机转子和轴用经真空处理的碳素钢和合金锻件

Chemical composition(mass fraction)(wt.%) of the A470 Class 4

Element Min Max Similar
V 0.0400 0.1200 -
Si - 0.1000 -
S - 0.0120 -
P - 0.0120 -
Ni 3.2000 3.7000 -
Mo 0.4000 0.6000 -
Mn 0.2000 0.6000 -
Cr - 0.7500 -
C 0.2200 0.3000 -

Mechanical Properties of steel grade A470 Class 4

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)
656 (≥) 858 (≥) 14 13 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade A470 Class 4

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 -  
273 649 - 42.3 141   -  
846 - 34 24.2   124 234

Heat Treatment of steel grade A470 Class 4

Heat treated : 1311°C - 1528°C

Technological Curves of steel grade A470 Class 4

Cross Reference Table (Equivalent Grade) of A470 Class 4

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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