C91100 Tin Bronze Casting
C91100 Tin Bronze Casting is a high-tin copper alloy (UNS C91100) containing nominally 84% copper and 16% tin. This alloy offers exceptional hardness and is used primarily for heavy-duty gears, worm wheels, and bridge bearings. Electrical Accessories India manufactures C91100 sand castings and centrifugal castings. Indicative price: US$ 11.00/kilogram (subject to quantity and specification).
C91100 Chemical Composition
| Element |
Min % |
Max % |
| Copper (Cu) |
82.0 |
85.0 |
| Tin (Sn) |
15.0 |
17.0 |
| Lead (Pb) |
— |
0.25 |
| Zinc (Zn) |
— |
0.25 |
| Nickel (Ni) |
— |
0.50 |
| Phosphorus (P) |
— |
0.05 |
C91100 Mechanical Properties (Sand Cast – ASTM B584)
| Property |
Value |
| Tensile Strength |
276 MPa (40,000 psi) min |
| Yield Strength |
207 MPa (30,000 psi) min |
| Elongation |
1% min |
| Brinell Hardness |
95 HB typical |
| Density |
8.67 g/cm³ |
| Melting Range |
790–980°C (1450–1800°F) |
International Equivalents of C91100
| Standard |
Designation |
Common Name |
| USA – UNS |
C91100 |
High Tin Bronze (84-16) |
| UK – BS 1400 |
PB2 |
High Tin Phosphor Bronze |
| Europe – EN 1982 |
CC492K |
CuSn11Pb2 |
| Germany – DIN |
2.1060 |
CuSn14 |
| ISO 1338 |
CuSn12 |
High Tin Bronze |
| Japan – JIS H5111 |
CAC403 |
Tin Bronze |
Typical Applications
C91100 tin bronze castings are used for: heavy-duty gears and worm wheels, bridge bearings and expansion plates, high-load slow-speed bearings, pump liners, and bell and art casting applications.
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