14. CuSn7Pb15-C / CuSn7Pb15-B (CC496K)

CuSn7Pb15-C / CuSn7Pb15-B (CC496K)

Common name Material description
World specifications
EuropeanBritishAmerican
High-leaded tin bronzeCuSn7Pb15-C / CuSn7Pb15-BCC496K / CC496K
(EN 1982)
LB1
(BS 1400)
C93800
(ASTM B 505)

Other name: CAC604, CuPb15Sn, CuSn8Pb15Ni
The equivalence between the standards is not absolute and some variations in composition can exist.

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

 CuSnPbZnNiAlFeMnPSSiSbAsCrBiCdSe
Min74.06.013.0-0.5------------
Max80.08.017.02.02.00.010.250.20.100.100.010.5-----

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

 CuSnPbZnNiAlFeMnPSSiSbAsCrBiCdSe
Min74.06.213.2-0.5------------
Max79.58.017.02.02.00.010.250.20.100.080.010.5-----

Mechanical Properties (EN 1982:2017, Continuous castings)

RmTensile strength min.200 N/mm2
Rp0.2Proof Strength min.90 N/mm2
AElongation min.8 %
HBBrinell hardness min.65 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.