11. CuSn7Zn2Pb3-C / CuSn7Zn2Pb3-B, (CC492K / CB492K)

CuSn7Zn2Pb3-C / CuSn7Zn2Pb3-B, (CC492K / CB492K)

Common name Material description
World specifications
EuropeanBritishAmerican
Leaded tin bronzeCuSn7Zn2Pb3-C / CuSn7Zn2Pb3-BCC492K / CB492K
(EN 1982)
LG4
(BS 1400)
C92400

Other name: NES 838, C92410A, 2.1052.03.
The equivalence between the standards is not absolute and some variations in composition can exist.

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

 Cu*Sn**PbZnNi**AlFeMnPSSiSbAsCrBiCdSe
Min85.06.02.51.5-------------
Max89.08.03.53.02.00.010.2-0.100.100.010.25-----

* Including nickel.
** (Sn +1/2 Ni) content shall be in the range 7.0% to 8 %.

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

 Cu*Sn**PbZnNi**AlFeMnPSSiSbAsCrBiCdSe
Min85.06.22.71.7-------------
Max88.58.03.53.22.00.010.20-0.030.080.010.25-----

* Including nickel.
** (Sn +1/2 Ni) content shall be in the range 7.0% to 8 %.

Mechanical Properties (EN 1982:2017, Continuous castings)

RmTensile strength min.270 N/mm2
Rp0.2Proof Strength min.130 N/mm2
AElongation min.12 %
HBBrinell hardness min.70 HBW

Properties:

  • material with good stability and expansion,
  • good for casting,
  • sea water resistant.

Application:

  • bearings of cranes and elevators;
  • minor machine tool bearings;
  • piston pin bushes for load up to 50N/mm2;
  • bearing for packing machines and electric motors;
  • general bearing in mechanical engineering;
  • valve and gate seat rings;
  • guide bushes in hydraulic cylinders;
  • slip rings.