Characteristic
It has a very high electrical conductivity among cast bronzed. In addition, it has a fairly low
tensile strength and a fairly low ductility. General-purpose bearings made from this material
will withstand slacker tolerance and infrequent if a softer shaft material is used.
| Common name | Material description | World specifications: European | World specifications: British | World specifications: American |
| High-leaded tin bronze | CuSn5Pb9-C / CuSn5Pb9-B | CC494K / CB494K (EN 1982) | LB4 (BS 1400) | C93500 (ASTM B 505) |
The equivalence between the standards is not absolute and some variations in composition can exist.
Similar or Equivalent Specifications
| UNS | ASTM | SAE | AMS | Federal | Military | Other |
| C93500 | B505 |
Chemical Composition in %, (EN 1982:2017, Castings)
| Cu | Sn | Pb | Zn | Ni | Al | Fe | Mn | P | S | Si | Sb | |
| Min | 80.0 | 4.0 | 8.0 | – | – | – | – | – | – | – | – | – |
| Max | 87.0 | 6.0 | 10.0 | 2.0 | 2.0 | 0.01 | 0.25 | 0.2 | 0.1 | 0.10 | 0.01 | 0.5 |
Chemical Composition in %, (EN 1982:2017, Ingots)
| Cu | Sn | Pb | Zn | Ni | Al | Fe | Mn | P | S | Si | Sb | |
| Min | 80.0 | 4.2 | 8.2 | – | – | – | – | – | – | – | – | – |
| Max | 86.0 | 6.0 | 10.0 | 2.0 | 2.0 | 0.01 | 0.20 | 0.2 | 0.1 | 0.08 | 0.01 | 0.5 |
Mechanical Properties
| Rm | Tensile strength min. | 200 N/mm2 |
| Rp0.2 | Proof Strength min. | 100 N/mm2 |
| A(50mm) | Elongation min. | 9% |
| HB | Brinell hardness min. | 60 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.