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3J40

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3J22 3J53
#3J40

Description

China GBT 3J40 Elastic Alloy and 3J40 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 3J40
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 3J40 GBT China Elastic Alloy
2J64
2J65
2J67
2J83
2J84
2J85
3J01
3J09
3J21
3J22

Chemical composition(mass fraction)(wt.%) of the 3J40

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Al(%) Fe(%)
≤0.03 ≤0.20 ≤0.10 0.010 0.010 39.0-41.0 Bal 3.3-3.5 ≤0.50

Mechanical Properties of steel grade 3J40

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)
574 (≥) 772 (≥) 33 32 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade 3J40

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
44 - -     0.42 -  
473 276 - 41.3 134   -  
796 - 14 41.2   134 332

Heat Treatment of steel grade 3J40

Heat treated : 1289°C - 1312°C

Technological Curves of steel grade 3J40

Cross Reference Table (Equivalent Grade) of 3J40

Grade Standard Country Application
3J40 GBT China Elastic Alloy
3J22 3J53
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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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