C93700
High Leaded Tin Bronze
Premium bearing bronze with high lead content for superior anti-friction properties. Excellent for heavy-duty bearings operating under high loads and speeds where boundary lubrication conditions may occur.
Tensile Strength
30-35 ksi
Yield Strength
12-16 ksi
Machinability
80 / 100
Density
0.320 lb/in³
Chemical Composition
| Element | Min % | Max % |
|---|---|---|
| Copper (Cu) | 78 | 82 |
| Tin (Sn) | 9 | 11 |
| Lead (Pb) | 8 | 11 |
| Zinc (Zn) | — | 0.8 |
| Nickel (Ni) | — | 0.5 |
| Iron (Fe) | — | 0.7 |
| Antimony (Sb) | — | 0.5 |
Physical Properties
| Density | 0.320 lb/cu in |
|---|---|
| Specific Gravity | 8.86 |
| Melting Point (Solidus) | 1403°F |
| Melting Point (Liquidus) | 1705°F |
| Electrical Conductivity | 10% IACS |
Mechanical Properties
| Tensile Strength | 30-35 ksi |
|---|---|
| Yield Strength | 12-16 ksi |
| Elongation | 15-20% |
| Hardness | 55-65 BHN |
| Machinability Rating | 80 |
Thermal Properties
| Thermal Conductivity | 27 Btu/ft·hr·°F |
|---|---|
| Coefficient of Expansion | 10.3 × 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
- Heavy-duty bearings
- High-speed bearings
- Bushings for heavy loads
- Pump castings
- Valve components
- Railroad bearings
- Rolling mill bearings
Applicable Specifications
- ASTM B584
- ASTM B505
- ASTM B271
- ASTM B22
- AMS 4842
- SAE J461
- SAE J462
Frequently Asked Questions
Technical details about C93700 composition, properties, and applications.