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4J42

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4J40 4J43
#4J42

Description

China GBT 4J42 expansionalloy and 4J42 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 4J42
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 4J42 GBT China expansionalloy
3J63
4J06
4J28
4J29
4J32
4J33
4J34
4J36
4J38
4J40

Chemical composition(mass fraction)(wt.%) of the 4J42

C(％) Si(％) Mn(％) P(％) S(％) Ni(％) Co(%) Al(%) Fe(%)
0.05 ≤0.30 ≤0.80 0.020 0.020 41.5-42.5 ≤0.1 ≤0.1 Bal

Mechanical Properties of steel grade 4J42

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)
119 (≥) 346 (≥) 31 43 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade 4J42

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
32 - -     0.13 -  
228 812 - 32.3 231   -  
866 - 31 22.2   222 142

Heat Treatment of steel grade 4J42

Heat treated : 1115°C - 1199°C

Technological Curves of steel grade 4J42

Cross Reference Table (Equivalent Grade) of 4J42

Grade Standard Country Application
4J42 GBT China expansionalloy
4J40 4J43
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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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