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Description

USA ICI 4620 Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures and 4620 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 4620
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 4620 ICI USA Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
1020
1030
1040
1050
6120
4020
4130
4140
4330
4340

Chemical composition(mass fraction)(wt.%) of the 4620

C(%) Si(%) Mn(%) P(%) S(%) Ni(%) Mo(%)
0.15-0.25 0.20-0.80 0.40-0.70 0.04 0.045 1.65-2.00 0.20-0.30

Mechanical Properties of steel grade 4620

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)
293 (≥) 731 (≥) 11 34 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade 4620

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
33 - -     0.32 -  
543 868 - 22.3 121   -  
289 - 11 23.2   411 341

Heat Treatment of steel grade 4620

Heat treated : 1697°C - 1121°C

Technological Curves of steel grade 4620

Cross Reference Table (Equivalent Grade) of 4620

Grade Standard Country Application
ICI 4620 AISI USA
4620 AS Australia Australia Structural steel
4620 H AS Australia Australia Structural steel
4620 ICI USA Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
4620 ICI USA Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures

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