Cast C95400
Aluminum bronze is the highest strength standard copper-based alloy. Randall Bearings produces C95400, C95500, AMS 4880-C95510 and C95900 aluminum bronze alloys as standard-stocked products in common sizes of rounds, tubes and rectangles. Aluminum in conjunction with iron and nickel acts as a strengthener in these alloys. All of the aluminum bronzes can be heat treated, further increasing tensile strengths.
Information
Product description: Aluminum bronze
Solids: 1/2” to 10” O.D.
Tubes: 1” to 16” O.D.
Rectangles: Up to 20”
Standard lengths: 144”
Shape/Form: semi-finished, mill stock or near-net shapes, anode, bar stock, billet/bloom, squares, hex, plate, profile or structural shape, flats/rectangular bar
Typical uses
Building: heavy construction equipment
Fasteners: swivel
Industrial: bearings, bushings, gear blanks, gears, piston rings, pump bodies, pump impellers, valve bodies, valves
Plumbing: steam fittings
Similar or equivalent specification
| CDA | ASTM | SAE | AMS | Federal | Military | Other |
|---|---|---|---|---|---|---|
| C95400 | B505 B505M | J461 J462 | QQ-C-390, G5; QQ-B-671, Class 3 | MIL-B-16033, Class 3 | Aluminum Bronze 9C |
Chemical composition
| Cu% | Fe% | Ni%1 | Al% | Mn% |
|---|---|---|---|---|
| 83.00 min | 3.00-5.00 | 1.50 | 10.00-11.50 | 0.50 |
Chemical composition according to ASTM B505/B505M-23
¹Ni value includes Co.
Note: Cu + sum of named elements, 99.5% min. Single values represent maximums.
Machinability
| Copper alloy UNS no. | Machinability rating | Density (lb / in³ at 68°F) |
|---|---|---|
| C95400 | 60 | 0.269 |
Mechanical properties
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, in 2 in. or 50 mm min | Brinell hardness (500 kg load) | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical BHN | |
| 85 | 586 | 32 | 221 | 12 | 170 | |
Mechanical properties according to ASTM B505/B505M-23
Physical properties
| US Customary | Metric | |
|---|---|---|
| Melting point - liquidus | 1900 °F | 1038 °C |
| Melting point - solidus | 1880 °F | 1027 °C |
| Density | 0.269 lb/in³ at 68 °F | 7.45 gm/cm³ at 20 °C |
| Specific gravity | 7.45 | 7.45 |
| Electrical conductivity | 13% IACS at 68 °F | 0.075 MegaSiemens/cm at 20 °C |
| Thermal conductivity | 33.9 Btu/sq ft/ft hr/°F at 68 °F | 58.7 W/m at 20 °C |
| Coefficient of thermal expansion 68-572 | 9 · 10-6 per °F (68-572 °F) | 15.5 · 10-6 per °C (20-300 °C) |
| Specific heat capacity | 0.1 Btu/lb/°F at 68 °F | 419 J/kg at 20 °C |
| Modulus of elastic in tension | 15500 ksi | 107000 MPa |
| Magnetic permeability* | 1.27 | 1.27 |
| Magnetic permeability** | 1.2 | 1.2 |
Physical properties provided by CDA
*As cast, field strength 16 kA/m **TQ 50 temper, field strength 16 kA/m
Fabrication properties
| Technique | Suitability |
|---|---|
| Soldering | Good |
| Brazing | Good |
| Oxyacetylene welding | Not recommended |
| Gas shielded arc welding | Good |
| Coated metal arc welding | Good |
| Machinability rating | 60 |
Thermal properties
| Treatment | Min* | Max* | Value* | Time** | Medium |
|---|---|---|---|---|---|
| Stress relief | 600 | ||||
| Solution treatment | 1600 | 1675 | 1 | Water | |
| Annealing | 1150 | 1225 | 1 |
Thermal properties provided by CDA
*Temperature is measured in Fahrenheit. **For stress relief, solution treatment and annealing - time is measured in hours/inch of thickness. For precipitation heat treatment - time is measured in hours.