CuSn3Zn8Pb5-C / CuSn3Zn8Pb5-B (CC490K / CB490K)
| Common name | Material description | World specifications |
||
|---|---|---|---|---|
| European | British | American | ||
| Leaded bronze / Gun Metal | CuSn3Zn8Pb5-C / CuSn3Zn8Pb5-B | CC490K / 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* | Sn | Pb | Zn | Ni | Al | Fe | Mn | P | S | Si | Sb | As | Cr | Bi | Cd | Se | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 81.0 | 2.0 | 3.0 | 7.0 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Max | 86.0 | 3.5 | 6.0 | 9.5 | 2.0 | 0.01 | 0.5 | - | 0.05 | 0.10 | 0.01 | 0.30 | - | - | - | - | - |
* Including nickel.
Chemical Composition in %, (EN 1982:2017, Ingots)
| Cu* | Sn | Pb | Zn | Ni | Al | Fe | Mn | P | S | Si | Sb | As | Cr | Bi | Cd | Se | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 81.0 | 2.2 | 3.5 | 7.5 | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Max | 85.5 | 3.5 | 5.8 | 10.0 | 2.0 | 0.01 | 0.50 | - | 0.03 | 0.08 | 0.01 | 0.25 | - | - | - | - | - |
* Including nickel.
Mechanical Properties (EN 1982:2017, Continuous castings)
| Rm | Tensile strength min. | 220 N/mm2 |
| Rp0.2 | Proof Strength min. | 100 N/mm2 |
| A | Elongation min. | 12 % |
| HB | Brinell 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.