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China CNS KJ4 Copper lead alloy castings for bearing and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: KJ4 / KJ4
Category Grade Standard Region/Area Standard Content
Metals KJ4 CNS H 3130 China Copper lead alloy castings for bearing

Chemical composition(mass fraction)(wt.%) of the KJ4

Element Min Max Similar

Mechanical Properties of steel grade KJ4

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)
797 (≥) 653 (≥) 22 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade KJ4

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 - -     0.23 -  
369 355 - 34.3 341   -  
548 - 43 11.2   224 342

Heat Treatment of steel grade KJ4

Heat treated : 1274°C - 1441°C

Technological Curves of steel grade KJ4

Cross Reference Table (Equivalent Grade) of KJ4

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