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Description

China GBT 1J18 non-retentive alloy and 1J18 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 1J18
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 1J18 GBT China non-retentive alloy
Cr20Ni80
Cr30Ni70
Cr15Ni60
Cr20Ni35
Cr20Ni30
1J06
1J12
1J13
1J16
1J17

Chemical composition(mass fraction)(wt.%) of the 1J18

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Ti(%) Fe(%)
0.03 ≤0.15 0.30-0.70 0.020 0.020 17.0-18.5 0.5-0.7 0.30-0.70 Bal

Mechanical Properties of steel grade 1J18

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)
211 (≥) 143 (≥) 33 23 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade 1J18

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 - -     0.34 -  
515 434 - 21.3 324   -  
899 - 41 42.2   123 311

Heat Treatment of steel grade 1J18

Heat treated : 1483°C - 1546°C

Technological Curves of steel grade 1J18

Cross Reference Table (Equivalent Grade) of 1J18

Grade Standard Country Application
1J18 GBT China non-retentive alloy

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