SAE 660 Bearing Bronze
Overview
C93200 is the most widely used bearing bronze in the industry. Known as SAE 660, this versatile alloy offers an excellent combination of wear resistance, machinability, and corrosion resistance. It is the standard choice for general-purpose bearings and bushings.
As a C93200 sae 660 bearing bronzesupplier, Triton Bronze & Metals stocks continuous cast bronze in round bar, hollow bar, flat bar, and more — all cut to length and shipped from US mills. Every order ships with a mill test report available upon request.
Chemical Composition — C93200
| Element | Content |
|---|---|
| Copper (Cu) | 81-85% |
| Tin (Sn) | 6.3-7.5% |
| Lead (Pb) | 6-8% |
| Zinc (Zn) | 1-4% |
| Nickel (Ni) | 1.0% max |
| Iron (Fe) | 0.20% max |
| Antimony (Sb) | 0.35% max |
| Phosphorus (P) | 0.15% max |
| Sulfur (S) | 0.08% max |
| Aluminum (Al) | 0.005% max |
| Silicon (Si) | 0.005% max |
Mechanical Properties
Physical Properties
| Property | Value |
|---|---|
| Density | 0.322 lb/in³ (8.91 g/cm³) |
| Melting Range | 1570-1790°F (854-977°C) |
| Modulus of Elasticity | 14,500 ksi (100 GPa) |
| Thermal Conductivity | 33.6 BTU/ft·hr·°F (58.2 W/m·K) |
| Coefficient of Thermal Expansion | 10.0 × 10⁻⁶ /°F (18.0 × 10⁻⁶ /°C) |
| Electrical Conductivity | 12% IACS |
| Specific Heat Capacity | 0.09 BTU/lb/°F (377 J/kg·K) |
Applicable Specifications
- ✓ASTM B505 / B505M (Continuous Cast)
- ✓ASTM B271 (Centrifugal Cast)
- ✓ASTM B584 (Sand Cast)
- ✓SAE 660 / J461 / J462
- ✓Federal QQ-C-390 (Type III)
- ✓Military MIL-B-11553 (Comp 12)
Fabrication & Joining
| Process | Rating |
|---|---|
| Soldering | Excellent |
| Brazing | Good |
| Oxyacetylene Welding | Not Recommended |
| Arc Welding | Not Recommended |
| Stress Relief | 500°F (260°C), 1 hr per inch of wall |
Common Applications
- •Bearings and bushings
- •Pump impellers
- •Valve bodies
- •Steam fittings
- •Gears and worm wheels
- •Hydraulic cylinder parts
Frequently Asked Questions
What forms is C93200 SAE 660 Bearing Bronze available in?+
We supply C93200 in Round Bar, Hollow Bar, Flat Bar, Plate, Castings. All material is sourced from US mills, cut to length, and shipped directly to your facility.
What are the typical applications for C93200?+
C93200 is commonly used for bearings and bushings, pump impellers, valve bodies, steam fittings. Contact us for application-specific recommendations.
Can I get a mill test report for C93200?+
Yes. Mill test reports (MTRs) are available upon request for all C93200 orders. We can also provide material certifications to meet your quality requirements.
Is C93200 available as continuous cast bronze?+
Yes. C93200 is produced via the continuous casting process, which delivers a dense, uniform grain structure with excellent mechanical properties. Continuous cast bronze provides tighter tolerances and better surface finish than sand castings.
Dimensional Tolerances
For standard finishing allowances, diameter tolerances, and concentricity data for continuous cast bronze products, see our tolerance reference.
View Tolerances & Finishing Allowances →Need Finished Parts?
We supply C93200 as ready-to-install bronze bushings, bearings, thrust washers, and wear plates — from stock or made to order.
View Finished Parts & Components →Available Forms
- Round Bar
- Hollow Bar
- Flat Bar
- Plate
- Castings
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