Metals & alloys · Copper alloys
C95400 aluminium bronze
A high-strength aluminium bronze used for wear, corrosion and load-bearing service in marine and industrial machinery.
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01
Overview
- Material class
- Metals & alloys
- Category
- Copper alloys
- Family
- Copper Alloy
- Product forms
- Casting
Composition
| Constituent | Min | Max | Typical | Note |
|---|---|---|---|---|
| Al | 10 | 11.5 | 10.5 | |
| Fe | 3 | 5 | 4 | |
| Ni | 1.5 | 0.5 | ||
| Mn | 0.5 | 0.2 | ||
| Cu | Balance |
02
Properties and conditions
Engineering properties
| Property | Value | Unit | Condition |
|---|---|---|---|
| Density | 7.45 | g/cm³ | Representative; verify product form and condition |
| Elastic modulus | 105–115 | GPa | Representative; verify product form and condition |
| Yield strength | 240–520 | MPa | cast/heat treated |
| Tensile strength | 585–760 | MPa | Representative; verify product form and condition |
| Hardness | 150–220 | HB | Representative; verify product form and condition |
| Seawater resistance | good | flow/galvanic dependent |
Conditions
Representative supplied condition
Condition not fully specified in the source record.
03
Processing and use
Processing
- Cooling rate controls alpha/beta-derived microstructure and iron-rich phases.
- Heat treatment can improve strength and ductility.
Applications
- Bushings
- Worm gears
- Pump components
- Valve seats
Selection considerations
- Avoid improper galvanic coupling and stagnant crevices.
- Casting soundness and section thickness strongly influence properties.
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04
Standards and related materials
Standards and designations
| System | Designation | Note |
|---|---|---|
| UNS | C95400 | |
| ASTM | B148 | |
| SAE | 68B |
05
Sources and context
Sources
- Copper Development Association C95400 dataExisting reference
- ASTM B148Existing reference
- U.S. Department of Energy lightweight materials programApplication reference
- U.S. Department of Energy critical materials programStrategic reference
Confirm the applicable specification, product form and condition before using values for design or procurement.
Supply and sustainability
Common continuous-cast and sand-cast bronze supply.
Copper alloy scrap has high recovery value and long-life bearing applications reduce maintenance.
Strategic context
Wear-resistant copper alloy for marine and heavy-equipment components where galling and corrosion limit steels.
Critical inputs: Copper, Aluminium
Basis: EU Critical Raw Materials Act (2024); USGS 2025 Critical Minerals List