5. CuSn5Zn5Pb5-C / CuSn5Zn5Pb5-B (CC491K / CB491K)

CuSn5Zn5Pb5-C / CuSn5Zn5Pb5-B (CC491K / CB491K)

Common name Material description
World specifications
EuropeanBritishAmerican
Leaded bronze / Gun MetalCuSn5Zn5Pb5CC491K / CB491K
(EN 1982)
LG2
(BS 1400)
C83600
(ASTM B 505)

Other name: SS 5204-15, JIS BC6, GOST BrO5Z5S5, AS C83600A, NS 16530, БрО5Ц5С5, G-CuSn5ZnPb.
The equivalence between the standards is not absolute and some variations in composition can exist.

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

 Cu*SnPbZnNiAlFeMnPSSiSbAsCrBiCdSe
Min83.04.04.04.0-------------
Max87.06.06.06.02.00.010.3-0.10.10.010.25-----

* Including nickel.

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

 CuaSnPbZnNiAlFeMnPSSiSbAsCrBiCdSe
Min83.04.24.24.5-------------
Max86.56.05.86.52.00.010.25-0.030.080.010.25-----

* Including nickel.

Mechanical Properties (EN 1982:2017, Continuous castings)

RmTensile strength min.250 N/mm2
Rp0.2Proof Strength min.110 N/mm2
AElongation min.13 %
HBBrinell hardness min.65 HBW

Properties:

  • engineering material with the highest elongation;
  • corrosion and water proof;
  • for air gas and water fittings.

Application:

  • low-pressure valves;
  • pipe fittings;
  • gasoline and oil-line fittings;
  • fire extinguishing equipment fittings;
  • small gears;
  • pump parts;
  • general plumbing.