Aluminum Bronze
C95500 — Nickel-Aluminum Bronze (Ni 3–5.5%)
A higher-strength cast aluminum bronze with added nickel, used for heavily loaded gears, bearings and corrosion-resistant components.
Grade overview
C95500 adds about 3–5.5% nickel to the iron-bearing aluminum bronze base. The nickel improves strength and toughness, particularly after heat treatment, and widens corrosion resistance in comparison with C95400.
It is typically specified when C95400 does not quite provide the strength or hardness needed – for example in heavily loaded gears and bushings, pump parts and valve components for corrosive service.
Alloy family and identification
Cast copper-aluminum-nickel-iron alloy, UNS C95500. Related to C95400 and C95800; check the exact UNS number on the order since they are not interchangeable.
| Item | Detail |
|---|---|
| UNS designation | C95500 |
| Common name | Nickel-Aluminum Bronze (Ni 3–5.5%) |
| Alloy family | Aluminum Bronze |
| Type | Cast copper-aluminum-nickel-iron alloy |
Typical composition
| Element | Nominal limit, wt % |
|---|---|
| Copper (Cu) | 78.0 min |
| Aluminum (Al) | 10.0 – 11.5 |
| Iron (Fe) | 3.0 – 5.0 |
| Nickel (Ni, incl. Co) | 3.0 – 5.5 |
| Manganese (Mn) | 3.5 max |
| Silicon (Si) | 0.35 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 corrosion, cavitation and wear resistance across a range of fresh-water, brackish and process fluids. Heat treatment can raise strength further. For long-term sea-water immersion, C95800 is usually the specified grade.
Machinability and fabrication
Machinable with rigid tooling; expect higher tool wear than for leaded bronzes. Heat treatment and weld repair must follow qualified procedures.
Common industrial applications
- Heavily loaded gears and worm wheels
- Bushings and bearings
- Pump impellers and wear parts (design dependent)
- Valve components
- Flanges and fittings for demanding service
Examples only. Suitability must be confirmed for the actual operating environment.
Available product forms
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 C95500 is confirmed with the company for each order; no certificate is implied by this page.
Related grades
Frequently asked questions
What does nickel add to C95500?
Nickel increases strength and toughness and supports heat treatment compared with C95400.
Is C95500 a marine alloy?
It is used in demanding environments, but C95800 is the grade most associated with sea-water service. Confirm for your application.
Need C95500 in a specific form?
Share your grade, dimensions, quantity and technical requirements with our team.