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A837 Grade 4320

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America ASTM A837Grade4320 渗碳用合金钢锻件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A837Grade4320 / A837 Grade 4320
Category Grade Standard Region/Area Standard Content
Metals A837 Grade 4320 ASTM A837/A837M America 渗碳用合金钢锻件

Chemical composition(mass fraction)(wt.%) of the A837 Grade 4320

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0400 -
P - 0.0350 -
Ni 1.6500 2.0000 -
Mo 0.2000 0.3000 -
Mn 0.4500 0.6500 -
Cu - 0.3500 -
Cr 0.4000 0.6000 -
C 0.1700 0.2200 -

Mechanical Properties of steel grade A837 Grade 4320

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)
792 (≥) 343 (≥) 31 32 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 113

Physical Properties of steel grade A837 Grade 4320

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 - -     0.22 -  
992 355 - 13.3 142   -  
963 - 12 41.2   142 442

Heat Treatment of steel grade A837 Grade 4320

Heat treated : 1124°C - 1149°C

Technological Curves of steel grade A837 Grade 4320

Cross Reference Table (Equivalent Grade) of A837 Grade 4320

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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