C93200 SAE660 CC493K High Tin Bronze
The German DIN material 2.1090 (formerly known as Rg7 or chemical designation G-CuSn7ZnPb) is a leaded tin bronze commonly used for bushings and bearings. Its primary international equivalents are SAE 660 / UNS C93200 (USA) and EN CC493K / CuSn7Zn4Pb7-C (Europe)
Description
| Bronze Plate Technical Specifications Table | ||||||||||||
| Grade | 2.1090 | Leaded Tin Bronze | ||||||||||
| Common Name | Bronze Plate Specification | |||||||||||
| Chemical Composition | Cu | Sn | Pb | Zn | Ni | P |
| 81.0% – 85.0% | 6.0% – 8.0% | 5.0% – 8.0% | 2.0% – 5.0% | < 2.0% | < 0.10% |
| Equivalent Grades | USA (UNS / SAE) | Europe (EN) | Germany (DIN / Werkstoff) | Japan (JIS) |
| C93200 (SAE 660) | CC493K (CuSn7Zn4Pb7-C) | 2.1090 (Rg 7 / G-CuSn7ZnPb) | CAC603 (formerly LBC3) |
Physical & Mechanical Properties
- Density: ~8.8 – 8.93 g/cm³
- Melting Point: ~977°C
- Tensile Strength (Rm): Min. 260–270 MPa
- Hardness: ~70 HB
Material Characteristics
- Main Use: Slide bearings, bushings, and wear plates.
- Properties: Good dry-running properties, high wear resistance, and good machinability.
- Limitations: Poor weldability, though suitable for soldering.
