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Description

China GBT 4J82 expansionalloy and 4J82 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 4J82
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 4J82 GBT China expansionalloy
4J43
4J44
4J45
4J46
4J47
4J49
4J50
4J58
4J78
4J80

Chemical composition(mass fraction)(wt.%) of the 4J82

C(%) Si(%) Mn(%) P(%) S(%) Ni(%) Mo(%)
0.05 ≤0.30 ≤0.40 0.020 0.020 17.5-19.7

Mechanical Properties of steel grade 4J82

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)
455 (≥) 925 (≥) 24 31 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade 4J82

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
31 - -     0.44 -  
793 417 - 41.3 114   -  
838 - 13 33.2   341 432

Heat Treatment of steel grade 4J82

Heat treated : 1138°C - 1113°C

Technological Curves of steel grade 4J82

Cross Reference Table (Equivalent Grade) of 4J82

Grade Standard Country Application
4J82 GBT China expansionalloy

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