Cast C95500
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 standard sizes of rounds, tubes and rectangles. Aluminum in conjunction with iron and nickel in C955 acts as a strengthener in these alloys. All of the aluminum bronzes can be heat treated, further increasing tensile strengths.
Information
Product description: Nickel-Aluminum bronze
Solids: 1/2” to 9” O.D.
Tubes: 1 1/8” to 9” O.D.
Rectangles: Up to 15”
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
Compliance: C95500 is compliant with key legislation including (1) Federal Safe Drinking Water Act 1974 - SDWA, (2) Federal Reduction of Lead in Drinking Water Act 2011 and (3) California AB1953
Typical uses
BUILDERS HARDWARE: window hardware
CONSUMER: musical instruments, piano keys
ELECTRICAL: electrical hardware
Fasteners: stuffing box nuts
Industrial: aircraft components, bearings, bushings, gears, glands, glass molds, handgun recoil mechanisms, hot mill guides, landing gear parts, machine parts, pickling equipment, piston guides, pump fluid ends, sewage treatment applications, valve bodies, valve components, valve guides, valve seats, wear plates, welding jaws, worms, worms wheels
MARINE: covers for marine hardware, marine applications, marine hardware, ship building
ORDNANCE: government fittings
Similar or equivalent specification
| CDA | ASTM | SAE | AMS | Federal | Military | Other |
|---|---|---|---|---|---|---|
| C95500 | B505 B505M | J461 J462 | QQ-C-390, G3 | MIL-B-16033, Class 4 | Aluminum Bronze 9D |
Chemical composition
| Cu% | Fe% | Ni%1 | Al% | Mn% |
|---|---|---|---|---|
| 78.00 min | 3.00-5.00 | 3.00-5.50 | 10.00-11.50 | 3.50 |
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) |
|---|---|---|
| C95500 | 50 | 0.272 |
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 | |
| 95 | 655 | 42 | 290 | 10 | 208 | |
Mechanical properties according to ASTM B505/B505M-23
Physical properties
| US Customary | Metric | |
|---|---|---|
| Melting point - liquidus | 1930 °F | 1054 °C |
| Melting point - solidus | 1900 °F | 1038 °C |
| Density | 0.272 lb/in³ at 68 °F | 7.53 gm/cm³ at 20 °C |
| Specific gravity | 7.53 | 7.53 |
| Electrical conductivity | 8% IACS at 68 °F | 0.049 MegaSiemens/cm at 20 °C |
| Thermal conductivity | 24.2 Btu/sq ft/ft hr/°F at 68 °F | 41.9 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 | 16000 ksi | 110000 MPa |
| Magnetic permeability* | 1.32 | 1.32 |
| Magnetic permeability** | 1.2 | 1.2 |
| Poisson's Ratio | 0.32 | 0.32 |
Fabrication properties
| Technique | Suitability |
|---|---|
| Soldering | Good |
| Brazing | Fair |
| Oxyacetylene welding | Not recommended |
| Gas shielded arc welding | Good |
| Coated metal arc welding | Good |
| Machinability rating | 50 |
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.