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1J40

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1J38 1J46
#1J40

Description

China GBT 1J40 non-retentive alloy and 1J40 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 1J40
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 1J40 GBT China non-retentive alloy
1J17
1J18
1J22
1J30
1J31
1J32
1J33
1J34
1J36
1J38

Chemical composition(mass fraction)(wt.%) of the 1J40

C(％) Si(％) Mn(％) P(％) S(％) Ni(％) Mo(％) Co(%) Fe(%)
0.03 0.15-0.30 0.30-0.60 0.020 0.020 39.0-41.0 3.8-4.2 24.5-25.5 Bal

Mechanical Properties of steel grade 1J40

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)
168 (≥) 339 (≥) 24 33 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade 1J40

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
13 - -     0.43 -  
349 876 - 42.3 341   -  
599 - 21 33.2   213 441

Heat Treatment of steel grade 1J40

Heat treated : 1543°C - 1714°C

Technological Curves of steel grade 1J40

Cross Reference Table (Equivalent Grade) of 1J40

Grade Standard Country Application
1J40 GBT China non-retentive alloy
1J38 1J46
Available Suppliers
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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