MATERIALJM1Bronze
BRONZEC93200 (approx.)
MATERIAL DATASHEET
JM1 (CuSn7Zn4Pb7-C)
Leaded gunmetal bronze with good machinability, wear and seawater resistance. Typical uses: bushings, bearings, general-purpose cast components.
Standards & designations
| Designation | Reference |
|---|---|
| EN 1982 | CC493K (CuSn7Zn4Pb7-C) |
| UNS | C93200 (approx.) |
| BS (old) | BS 1400 LG2 |
| DIN (old) | DIN 1705 Rg7 / CuSn7ZnPb |
Mechanical & physical properties
| Property | Value / condition |
|---|---|
| Yield strength Rp0.2 | ≥ 120 MPa |
| Tensile strength Rm | ≥ 260 MPa |
| Elongation A5 | ≥ 12 % |
| Hardness HBW | ≥ 70 |
| Density | ≈ 8.8 g/cm³ |
| Young’s modulus E | ≈ 100 GPa |
| Thermal conductivity | ≈ 61 W/m·K |
Chemical composition
Weight %
| Element | Cu (incl. Ni) | Sn | Pb | Zn | Ni | P | Fe | Si | S | Sb | Al |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 81.0 | 6.0 | 5.0 | 2.0 | — | — | — | — | — | — | — |
| Max | 85.0 | 8.0 | 8.0 | 5.0 | 2.0 | 0.10 | 0.20 | 0.01 | 0.10 | 0.30 | 0.01 |
The information in this datasheet is provided for guidance only. Intermec AS does not guarantee the accuracy or completeness of the data. Users must verify suitability for their specific applications.