2. CuSn12Ni2-C / CuSn12Ni2-B (CC484K / CB484K)

CuSn12Ni2-C / CuSn12Ni2-B (CC484K / CB484K)

Common name Material description
World specifications
EuropeanBritishAmerican
Tin bronze CuSn12-C / CuSn12-BCC484K / CC484K
(EN 1982)
CT2
(BS 1400)
C91700
(ASTM B 427)

Other name: JIS CIn2, ASTM C92500, SEA 640, CDA 925, GC-CuSn12Ni.
The equivalence between the standards is not absolute and some variations in composition can exist.

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

 SnPbZnNiAlFeMnPSSiSbAsCrBiCdSe
Min84.511.0--1.5---0.05-------
Max87.513.00.30.42.50.010.20.20.40.050.010.1----

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

 CuSnPbZnNiAlFeMnPSSiSbAsCrBiCdSe
Min84.011.3--1.5------------
Max87.013.00.20.32.40.010.150.100.40.040.010.05-----

Mechanical Properties (EN 1982:2017, Continuous castings)

RmTensile strength min.300 N/mm2
Rp0.2Proof Strength min.180 N/mm2
AElongation min.10 %
HBBrinell hardness min.95 HBW

Properties:

  • construction material with very good wear resistance;
  • corrosion and sea water resistant.

Application:

  • annular and tubular construction elements;
  • nuts moved under load;
  • high stress high- speed warm and helical wheel rims;
  • automotive synchronizer rings.