Tin Bronze (88-8-0-4)
Overview
C90300 is a lead-free tin bronze valued for its excellent corrosion resistance in water and steam service. It is widely used in plumbing, valves, and food-processing equipment where lead-free materials are required.
As a C90300 tin bronze (88-8-0-4)supplier, Triton Bronze & Metals stocks continuous cast bronze in round bar, hollow bar, castings — all cut to length and shipped from US mills. Every order ships with a mill test report available upon request.
Chemical Composition — C90300
| Element | Content |
|---|---|
| Copper (Cu) | 86-89% |
| Tin (Sn) | 7.5-9% |
| Zinc (Zn) | 3-5% |
| Iron (Fe) | 0.20% max |
| Nickel (Ni) | 1.0% max |
| Lead (Pb) | 0.30% max |
| Phosphorus (P) | 0.05% max |
| Sulfur (S) | 0.05% max |
| Antimony (Sb) | 0.20% max |
Mechanical Properties
Physical Properties
| Property | Value |
|---|---|
| Density | 0.318 lb/in³ (8.80 g/cm³) |
| Melting Range | 1570-1830°F (854-999°C) |
| Modulus of Elasticity | 14,000 ksi (97 GPa) |
| Thermal Conductivity | 40.4 BTU/ft·hr·°F (69.9 W/m·K) |
| Coefficient of Thermal Expansion | 10.0 × 10⁻⁶ /°F (18.0 × 10⁻⁶ /°C) |
| Electrical Conductivity | 12% IACS |
Applicable Specifications
- ✓ASTM B505 (Continuous Cast)
- ✓ASTM B584 (Sand Cast)
- ✓ASTM B271 (Centrifugal Cast)
- ✓SAE J461 / J462
- ✓Federal QQ-C-390 (Comp 2)
Fabrication & Joining
| Process | Rating |
|---|---|
| Soldering | Excellent |
| Brazing | Good |
| Oxyacetylene Welding | Not Recommended |
| Arc Welding | Not Recommended |
Common Applications
- •Valves and fittings
- •Plumbing hardware
- •Food processing equipment
- •Pump casings
- •Steam fittings
Frequently Asked Questions
What forms is C90300 Tin Bronze (88-8-0-4) available in?+
We supply C90300 in Round Bar, Hollow Bar, Castings. All material is sourced from US mills, cut to length, and shipped directly to your facility.
What are the typical applications for C90300?+
C90300 is commonly used for valves and fittings, plumbing hardware, food processing equipment, pump casings. Contact us for application-specific recommendations.
Can I get a mill test report for C90300?+
Yes. Mill test reports (MTRs) are available upon request for all C90300 orders. We can also provide material certifications to meet your quality requirements.
Is C90300 available as continuous cast bronze?+
Yes. C90300 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 C90300 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
- Castings
Need C90300?
Tell us the form, size, and quantity. We'll respond with a competitive quote — typically within hours.
Get a Quote