Aluminum is the main alloying metal added to copper in aluminum bronze. A variety of aluminum bronzes of differing compositions have found industrial use, with most ranging from 5.00% to 11.00% aluminum by weight, the remaining mass being copper. Other alloying agents such as iron, nickel, manganese, and silicon are also oftentimes added. Aluminum bronzes are most valued for their high strength and corrosion resistance.
bushings, bearings
bearings, forming dies for roll bearings, hydraulic bushings for earth moving equipment, valve balls, valve parts (cryogenic).
| Cu% | Sn% | Pb% | Zn% | Fe% | Ni% | Co% | Cr% | S% | AI% | Mn% | Si% |
|---|---|---|---|---|---|---|---|---|---|---|---|
Rem. | 0.25 | 0.03 | 0.30 | 4.00- 5.50 | 4.20- 6.00 | 0.20 | 0.05 | N/A | 10.00- 11.00 | 1.50 | 0.15 |
| Mechanical - TQ50 Quenched and Tempered : upto 1" diameter inclusive | ||
|---|---|---|
| Tensile Strength, min | 135 ksi | 931 MPa |
| Yield Strength @ .5% ext under load min | 100 ksi | 689 MPa |
| Elongation in 2 in. or 50 mm min, % | 6 | |
| Brinell Hardness | N/A | |
| Machinability Rating | N/A | |
| Mechanical - TQ50 Quenched and Tempered : over 1” to 2” inclusive | ||
|---|---|---|
| Tensile Strength, min | 130 ksi | 896 MPa |
| Yield Strength @ .5% ext under load min | 95 ksi | 655 MPa |
| Elongation in 2 in. or 50 mm min, % | 6 | |
| Brinell Hardness, min | N/A | |
| Machinability Rating | N/A | |
| Mechanical - TQ50 Quenched and Tempered : over 2” to 4” inclusive | ||
|---|---|---|
| Tensile Strength, min | 130 ksi | 896 MPa |
| Yield Strength @ .5% ext under load min | 90 ksi | 621 MPa |
| Elongation in 2 in. or 50 mm min, % | 6 | |
| Brinell Hardness, min | N/A | |
| Machinability Rating | N/A | |
| US Customary | Metric | |
|---|---|---|
| Melting Point-Liquidus | 1940° to 1967 °F | 1060° to 1075 °C |
| Melting Point-Solidus | N/A | N/A |
| Density | 0.274 lb/in 3 @ 68 °F | 7.6 gm/cm 3 @ 20 °C |
| Specific Gravity | 7.6 | 7.6 |
| Electrical Resistivity | 132.33 ohms-cmil/ft @ 68 °F | 22.0 microhm-cm @ 20 °C |
| Electrical Conductivity | N/A | N/A |
| Thermal Conductivity | 31.2 Btu/sq ft/ft hr/°F @ 68 °F | 54.0 W/m @ 20 °C |
| Coefficient of Thermal Expansion | 9.4 ⋅ 10-6 per °F (68-572 °F) | 17.0 ⋅ 10-6 per °C (20-300 °C) |
| Specific Heat Capacity | N/A | N/A |
| Modulus of Elasticity in Tension | N/A | N/A |
| Magnetic Permeability | N/A | N/A |
