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Description

China GBT 6J20 Resistance alloy and 6J20 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 6J20
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 6J20 GBT China Resistance alloy
4J46
4J47
4J49
4J50
4J58
4J78
4J80
4J82
6J10
6J15

Chemical composition(mass fraction)(wt.%) of the 6J20

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Al(%) Fe(%)
0.05 0.40-1.30 <0.70 0.010 0.010 20.0-23.0 Bal <0.3 >1.5

Mechanical Properties of steel grade 6J20

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)
794 (≥) 467 (≥) 43 24 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade 6J20

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
33 - -     0.22 -  
839 158 - 21.3 311   -  
317 - 34 34.2   312 414

Heat Treatment of steel grade 6J20

Heat treated : 1966°C - 1773°C

Technological Curves of steel grade 6J20

Cross Reference Table (Equivalent Grade) of 6J20

Grade Standard Country Application
6J20 GBT China Resistance alloy

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