16. CuSn3Zn8Pb5-C / CuSn3Zn8Pb5-B (CC490K / CB490K)

CuSn3Zn8Pb5-C / CuSn3Zn8Pb5-B (CC490K / CB490K)

Common name Material description
World specifications
EuropeanBritishAmerican
Leaded bronze / Gun MetalCuSn3Zn8Pb5-C / CuSn3Zn8Pb5-BCC490K / CB490K
(EN 1982)
LG1
(BS 1400)
C84400
(ASTM B 505)

Other name: C83810, BrO3Z7S5N1, C83810A, CuSn3Zn8Pb6Ni1, Rodgods 5214
The equivalence between the standards is not absolute and some variations in composition can exist.

Chemical Composition in %, (EN 1982:2017, Castings)

 Cu*SnPbZnNiAlFeMnPSSiSbAsCrBiCdSe
Min81.02.03.07.0-------------
Max86.03.56.09.52.00.010.5-0.050.100.010.30-----

* Including nickel.

Chemical Composition in %, (EN 1982:2017, Ingots)

 Cu*SnPbZnNiAlFeMnPSSiSbAsCrBiCdSe
Min81.02.23.57.5-------------
Max85.53.55.810.02.00.010.50-0.030.080.010.25-----

* Including nickel.

Mechanical Properties (EN 1982:2017, Continuous castings)

RmTensile strength min.220 N/mm2
Rp0.2Proof Strength min.100 N/mm2
AElongation min.12 %
HBBrinell hardness min.70 HBW

Properties:

Most commonly used bearing alloy, found in bearings operating at moderate loads and moderate-ta-high speeds, as in electric motors and appliances.

  • material for plain bearings in mechanical engineering with medium loads;
  • very good emergency running;
  • high wear resistance;

Application:

  • bearings of cranes and elevators;
  • minor machine tool bearings;
  • bearing for packing machines and electric motors;
  • general bearing in mechanical engineering;
  • valve and gate seat rings;
  • guide bushes in hydraulic cylinders;
  • slip rings.