C93200
High-Leaded Tin Bronze
Workhorse bearing bronze with excellent anti-friction properties. Also known as SAE 660 or bearing bronze.
Tensile Strength
35–40 ksi
Yield Strength
17–20 ksi
Machinability
70 / 100
Density
0.322 lb/in³
Chemical Composition
| Element | Min % | Max % |
|---|---|---|
| Copper (Cu) | 81 | 85 |
| Tin (Sn) | 6.3 | 7.5 |
| Lead (Pb) | 6 | 8 |
| Zinc (Zn) | 2 | 4 |
| Nickel (Ni) | — | 1 |
Physical Properties
| Density | 0.322 lb/cu in |
|---|---|
| Specific Gravity | 8.91 |
| Melting Point (Solidus) | 1570°F |
| Melting Point (Liquidus) | 1790°F |
| Electrical Conductivity | 10% IACS |
Mechanical Properties
| Tensile Strength | 35–40 ksi |
|---|---|
| Yield Strength | 17–20 ksi |
| Elongation | 15–20% |
| Hardness | 60–68 BHN |
| Machinability Rating | 70 |
Thermal Properties
| Thermal Conductivity | 34 Btu/ft·hr·°F |
|---|---|
| Coefficient of Expansion | 10 × 10⁻⁶ /°F |
| Specific Heat | 0.09 Btu/lb·°F |
Fabrication Properties
Soldering
Brazing
Oxyacetylene Welding
Gas Shielded Arc
Coated Metal Arc
Cold Working
Hot Forming
Typical Applications
- General purpose bushings
- Bearings for medium loads
- Thrust washers
- Pump bodies
- Impellers
- Pressure-tight castings
Applicable Specifications
- ASTM B505
- ASTM B271
- SAE 660
- SAE J461
- SAE J462
Frequently Asked Questions
Technical details about C93200 composition, properties, and applications.