NCS
A high-performance nickel-aluminium bronze (CuAl11Ni5Fe5, C63020) with high mechanical and surface properties and excellent resistance to oxidation and corrosion, even in saline-mist, widely used in aerospace and hydraulics. Offered in two grades, NCS and AMS 4590, both suitable for aerospace and other demanding applications.
✓ Lead-free · REACH / RoHSHigh mechanical & surface properties
Nickel-aluminium bronze with high strength and excellent surface finish.
Oxidation & corrosion resistant
Excellent oxidation and corrosion resistance, even in saline-mist environments.
Aerospace & marine grade
Proven nickel-aluminium bronze for aerospace, marine and sea-water service.
Fully integrated supply
Cast to finished part in-house, full traceability.
Aluminium Bronzes (Cu-Al).
NCS (CuAl11Ni5Fe5, UNS C63020 / CW308G / 2.0978) is a high-performance nickel-aluminium bronze with high mechanical and surface properties and excellent resistance to oxidation and corrosion, including in saline-mist environments.
It is offered in two grades, NCS and AMS 4590, both suitable for aerospace, and is widely used for bushings and bearings in landing gears, rings, mechanical parts and hydraulic pump blocks.
Minimum guaranteed properties.
| Grade / spec | Form | Tensile (ksi) | Yield 0.2% (ksi) | Elong. (%) | Hardness (HB) | Hardness (HRC) | Compliant with |
|---|---|---|---|---|---|---|---|
| AMS 4590 | Bars | 130 ksi | 90 ksi | 6 | 255 | 26 | AMS 4590, CW308G, 2,0978, NFL 14706, NFA 51 116 |
| NCS | Bars | 107 ksi | 57 ksi | 8 | 185 | 11 | CW308G, 2,0978, NFL 14706, NFA 51 116 |
Data for information only, non-contractual. Request a certified datasheet for design allowables.
Physical properties
| Density | 7.5 g/cm³ |
| Electrical conductivity | 8 %IACS |
| Thermal conductivity | 40 W/m·K |
| Young's modulus | 125 GPa |
| Thermal expansion | 16 ×10⁻⁶/K |
| Magnetic permeability | 1.5 |
| Machinability index | 30 |
| NACE corrosion rating | 4 |
Norms & designations.
Aerospace
- AMS 4590
- NFL 14-706
European
- EN 12163 · EN 12167 · EN 12420
- NFA 51-116 · DIN 1756
Designations
- CuAl11Ni5Fe5
- UNS C63020 · CW308G · 2.0978
Forms & applications.
Bars & hollow bars
Bar Ø ≤ 4″ (100 mm) and hollow bar OD ≤ 10″ (254 mm), AMS 4590-qualified.
Bars & hollow bars
Bar and hollow bar up to Ø ≤ 10″ (254 mm) for aerospace, industrial, oil & gas and defense.
Hydraulic pump blocks
Pump blocks and mechanical parts for the hydraulic industry.