Aluminum Bronze
C95400 — Aluminum Bronze (9C, 10–11.5% Al)
The general-purpose cast aluminum bronze: high strength, excellent wear resistance and good corrosion resistance for heavy-duty parts.
Grade overview
C95400 is the workhorse of the cast aluminum bronzes. With roughly 10–11.5% aluminum and 3–5% iron it offers a combination of strength, hardness and wear resistance that tin bronzes cannot match, and good resistance to corrosion in many fresh water, brackish water and mild process environments.
It is widely used for heavy-duty bushings, gears, valve parts, flanges and pump components. In the as-cast condition it is a robust, economical choice; heat treatment can increase strength further for suitable applications.
Alloy family and identification
Cast copper-aluminum-iron alloy, UNS C95400, sometimes called 9C aluminum bronze. Differs from C95500 mainly by its nickel content.
| Item | Detail |
|---|---|
| UNS designation | C95400 |
| Common name | Aluminum Bronze (9C, 10–11.5% Al) |
| Alloy family | Aluminum Bronze |
| Type | Cast copper-aluminum-iron alloy |
Typical composition
| Element | Nominal limit, wt % |
|---|---|
| Copper (Cu) | 83.0 min |
| Aluminum (Al) | 10.0 – 11.5 |
| Iron (Fe) | 3.0 – 5.0 |
| Nickel (Ni, incl. Co) | 1.5 max |
| Manganese (Mn) | 0.50 max |
| Zinc (Zn) | 0.50 max |
| Silicon (Si) | 0.25 max |
Reference data only – typical or nominal values from published specifications, not a guarantee of supplied material. Confirm against the current edition of the applicable specification, the product form and condition, and the material test certificate. Technical review by the company is required before publication or reliance.
Typical mechanical properties
Mechanical property values are intentionally not published here. They vary with specification, product form, size and temper or condition and will be added only once the governing specification and condition are confirmed. Request the applicable specification or test certificate with your inquiry.
Physical properties
Physical properties (density, thermal and electrical data) are not listed until verified against an authoritative datasheet. Contact us for current reference data.
Corrosion and wear considerations
Good resistance to corrosion in many fresh-water, brackish and mild chemical services, and strong resistance to wear and galling. In sea water, nickel-aluminum bronzes such as C95800 are generally preferred; suitability must be confirmed per service.
Machinability and fabrication
Machinable but harder on tooling than leaded bronzes; use rigid setups and suitable tools. Welding and repair require qualified procedures. Heat treatment is possible for higher strength.
Common industrial applications
- Heavy-duty bushings and bearings
- Gears and worm wheels
- Valve bodies, seats and flanges
- Pump components
- Mining and industrial wear parts
Examples only. Suitability must be confirmed for the actual operating environment.
Available product forms
- Aluminum Bronze Rod — C95400
- Aluminum Bronze Plate — C95400 (availability subject to confirmation)
- C95400 Aluminum Bronze Fittings
- C95400 Aluminum Bronze Flanges
Sizes, tolerances and stock are not published and must be confirmed with the company.
Relevant products
Standards and specifications
- ASTM B148 – aluminum-bronze sand castings
- ASTM B505/B505M – continuous castings
- ASTM B271/B271M – centrifugal castings
Verify against the current edition and the exact product form before specifying.
Certification and inspection options
Material test certificates, chemical analysis, dimensional reports and third-party inspection can be requested with your inquiry. What can be supplied for C95400 is confirmed with the company for each order; no certificate is implied by this page.
Related grades
Frequently asked questions
Is C95400 suitable for sea water?
It can be used in some sea-water applications, but C95800 is generally preferred for sustained marine service. Always confirm for your conditions.
Can C95400 be heat treated?
Yes, it can be heat treated for higher strength, subject to the specification and part design.
Need C95400 in a specific form?
Share your grade, dimensions, quantity and technical requirements with our team.