Description
C90800/CuSn12
Characteristic
Tough and hard materials with good wear resistance, also suitable for high sliding speeds.
Good corrosion resistance (even in seawater). Especially suitable for parts that have to bear
surface pressures and impacts at the same time and are also subjected to friction wear.
Resistant to cavitation stress. Highly stressed worm rims, cylinder inserts, gibs and slide bars.
| Common name | Material description | World specifications: European | World specifications: British | World specifications: American |
| Tin bronze | CuSn12-C / CuSn12-B | CC483K /CB483K (EN 1982) |
PB2 (BS 1400) |
C90800 (ASTM B 427) |
Other name: SS 5465-15, DS 5465, NS 16508, JIS PBC2C, AS C90810, БрО10Ф1, GC-CuSn12.
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 |
| C90800 | B427 |
Chemical Composition
| Cu | Sn | Pb | Zn | Ni | Al | Fe | Mn | P | S | Si | Sb | |
| Min | 85.0 | 10.5 | – | – | – | – | – | – | – | – | – | – |
| Max | 89.0 | 13.0 | 0.7 | 0.5 | 2.0 | 0.01 | 0.2 | 0.2 | 0.6 | 0.05 | 0.01 | 0.15 |
Mechanical Properties
| Rm | Tensile strength min. | 300 N/mm2 |
| Rp0.2 | Proof Strength min. | 150 N/mm2 |
| A(50mm) | Elongation min. | 6% |
| HB | Brinell hardness min. | 90 HBW |
Properties:
- material with good antifriction properties;
- highest wear resistance of the continuous casting materials.
Application:
- machine tool spindle bearings, which require the highest precision e.g.;
- precision turning lathes;
- grinders and gears;
- piston pin bushes;
- press bearings;
- high stress spindle nuts;
- high speed warm wheels and rims.
