Bronze Flanges
C95400 Aluminum Bronze Flanges
The general-purpose cast aluminum bronze: high strength, excellent wear resistance and good corrosion resistance for heavy-duty parts.
Product overview
C95400 flanges are considered for higher-load, wear-sensitive and mildly corrosive services. Confirm the flange standard, pressure class and drawing with the company before specifying.
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.
Material identification
| Item | Detail |
|---|---|
| UNS designation | C95400 |
| Material | Aluminum Bronze (9C, 10–11.5% Al) |
| Alloy family | Aluminum Bronze |
| Alloy type | Cast copper-aluminum-iron alloy |
| Product form | Flanges |
| Availability | Listed – sizes, tolerances and stock confirmed per inquiry |
Where it is used
- Heavy-duty bushings and bearings
- Gears and worm wheels
- Valve bodies, seats and flanges
- Pump components
- Mining and industrial wear parts
Machining 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.
Forms and sizes
- Cast or machined flanges to drawing or standard – subject to confirmation
- Blind, slip-on, threaded and similar types – subject to confirmation
- Special-order flanges from wrought stock (e.g. C51000)
Standards, sizes, facings and ratings are confirmed with the company for each inquiry; none are published here. 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) | 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.
Commonly referenced specifications
- ASTM B148 – aluminum-bronze sand castings
- ASTM B505/B505M – continuous castings
- ASTM B271/B271M – centrifugal castings
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.
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