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4020

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6120 4130
#4020

Description

USA ICI 4020 Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures and 4020 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 4020
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 4020 ICI USA Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
11Q
12Q
13Q
14Q
15A
1020
1030
1040
1050
6120

Chemical composition(mass fraction)(wt.%) of the 4020

C(％) Si(％) Mn(％) P(％) S(％) Mo(％)
≤0.35 0.20-0.80 1.35-1.75 0.04 0.045 0.25-0.55

Mechanical Properties of steel grade 4020

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)
928 (≥) 457 (≥) 14 13 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade 4020

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 - -     0.42 -  
155 777 - 43.3 433   -  
744 - 34 23.2   444 431

Heat Treatment of steel grade 4020

Heat treated : 1771°C - 1951°C

Technological Curves of steel grade 4020

Cross Reference Table (Equivalent Grade) of 4020

Grade Standard Country Application
UNS S44020 UNS USA Martensitic special steel
S44020 UNS USA Martensitic special steel
S44020 UNS USA Martensitic special steel
ICI 4020 AISI USA
U40208 GBT China China structural steel and alloy steel
U40202 GBT China China structural steel and alloy steel
4020 ICI USA Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
4020 ICI USA Carbon and Low Alloy Steel for General Application, and Cobalt Alloy for High Strength at Elevated Temperatures
6120 4130
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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