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The addition of aluminum can increase the strength of copper-nickel by conventional precipitation hardening mechanisms. Cu-Ni-Al alloys, principally consisting of Ni3Al and known as gamma prime, are used in shafts and bearing brushes, bolting, pump and valve trim, gears and fasteners. Because of its excellent impact and fatigue resistance NFL14702 is mainly used by both marine and aeronautical industry.
| Euro standard | W-nr | designations | Reference standards |
|---|---|---|---|
| CuNi14Al2 CuNi14AL3 | 2.1504 | UN14A2 NICKRALEX® K5 | ASNA 6127
NFL 14702 STF 22-55 / B005 GAM MM11 |
| Appearance | Solid |
| Melting Point | N/A |
| Boiling Point | N/A |
| Density | N/A |
| Signal Word | N/A |
| Hazard Statements | N/A |
| Hazard Codes | N/A |
| Transport Information | N/A |
| Trade name | UNS | Other name | Uses |
|---|---|---|---|
| Cu-Ni-Al (Cupro Nickel Aluminum Alloy) | NA | Copper Nickel Aluminum, cupronickel aluminum, copper-nickel-aluminum, CuNiAl, CuNi14Al2, CuNi14Al3, NFL14702 | are used in shafts and bearing brushes, bolting, pump and valve trim, gears and fasteners. |
RAILWAY INDUSTRY: valve guides, bearing cages
AEROSPACE INDUSTRY: short-circuit rings, rotors anti-friction rings, insert for plastic injection molds
| Or | 14 |
| al | 3 |
| mn | 0.5 |
| Cu | balance |
| Density | 8.6 |
| Thermal conductivity | 30 W / mK |
| rm | 740 - 780 N / mm² |
| Rp0.2 | 540 - 590 N / mm² |
| AT% | 7 - 10% |
| Hardness HB | 205 - 220 |
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