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4J80

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4J78 4J82
#4J80

Description

China GBT 4J80 expansionalloy and 4J80 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: 4J80
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy 4J80 GBT China expansionalloy
4J42
4J43
4J44
4J45
4J46
4J47
4J49
4J50
4J58
4J78

Chemical composition(mass fraction)(wt.%) of the 4J80

C(％) Si(％) Mn(％) P(％) S(％) Ni(％) Mo(％) W(%) Cu(%)
0.05 ≤0.30 ≤0.40 0.020 0.020 余 9.5-11.0 9.5-11.5 1.5-2.5

Mechanical Properties of steel grade 4J80

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)
996 (≥) 293 (≥) 23 23 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade 4J80

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
21 - -     0.44 -  
683 765 - 32.3 432   -  
624 - 23 42.2   114 411

Heat Treatment of steel grade 4J80

Heat treated : 1664°C - 1351°C

Technological Curves of steel grade 4J80

Cross Reference Table (Equivalent Grade) of 4J80

Grade Standard Country Application
4J80 GBT China expansionalloy
4J78 4J82
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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