Bronze Fittings
C95500 Aluminum Bronze Fittings
A higher-strength cast aluminum bronze with added nickel, used for heavily loaded gears, bearings and corrosion-resistant components.
Product overview
C95500 fittings are a material option for higher-pressure or higher-strength requirements. Fitting types and sizes offered are confirmed per inquiry.
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.
Material identification
| Item | Detail |
|---|---|
| UNS designation | C95500 |
| Material | Nickel-Aluminum Bronze (Ni 3–5.5%) |
| Alloy family | Aluminum Bronze |
| Alloy type | Cast copper-aluminum-nickel-iron alloy |
| Product form | Fittings |
| Availability | Listed – sizes, tolerances and stock confirmed per inquiry |
Where it is used
- Heavily loaded gears and worm wheels
- Bushings and bearings
- Pump impellers and wear parts (design dependent)
- Valve components
- Flanges and fittings for demanding service
Machining and fabrication
Machinable with rigid tooling; expect higher tool wear than for leaded bronzes. Heat treatment and weld repair must follow qualified procedures.
Forms and sizes
- Elbows (45° and 90°)
- Tees and crosses
- Couplings and reducers
- Unions, plugs and caps
- Custom fittings to drawing
Only fitting types technically appropriate to the material, application and manufacturing method are offered. Sizes, thread forms and ratings are confirmed with the company. Do not rely on this page for dimensions, tolerances or stock.
What to include in your inquiry
- UNS grade and governing specification
- Dimensions (or drawing) and tolerance class
- Quantity and delivery timing
- Application and operating environment
- Certificate / inspection requirements
Composition reference
| 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.
Commonly referenced specifications
- ASTM B148 – aluminum-bronze sand castings
- ASTM B505/B505M – continuous castings
- ASTM B271/B271M – centrifugal castings
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.
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