ZA9
A wrought unleaded brass (CuZn19Al6MnFe, NFL 14-707) for aerospace, aluminium- and iron-reinforced for high mechanical strength combined with good anti-friction behaviour and resistance to oxidation.
✓ Lead-free · REACH / RoHSHigh mechanical strength
One of the highest-strength copper-zinc alloys, aluminium- and iron-reinforced brass for demanding structural duty.
Anti-friction & wear resistant
Good anti-friction properties for friction-guidance and bearing surfaces.
Oxidation resistant
Good resistance to oxidation in service.
Machinable into complex parts
Meets stringent aerospace requirements and machines into complex geometries.
Unleaded & qualified
Lead-free brass qualified to NFL 14-707 and Airbus/aero standards.
Copper-Manganese Alloys.
ZA9 (CuZn19Al6MnFe, NFL 14-707) is a wrought unleaded brass designed for aerospace applications. This special aluminium- and iron-reinforced brass exhibits high mechanical properties combined with good anti-friction behaviour and good resistance to oxidation.
It matches stringent aerospace requirements and can be machined into complex parts, its strength and wear resistance make it the material of choice for friction-guidance rings, bushes and bearings in landing-gear systems.
Minimum guaranteed properties.
| Grade / spec | Form | Tensile (ksi) | Yield 0.2% (ksi) | Elong. (%) | Hardness (HB) | Hardness (HRC) | Compliant with |
|---|---|---|---|---|---|---|---|
| As supplied | Bars | 113 ksi | 78 ksi | 7 | 225 | 20 | NFL14707, ASNA 3402, NCT 10631-11, NCT 15631-01, NCT 15631-02 |
Data for information only, non-contractual. Request a certified datasheet for design allowables.
Physical properties
| Density | 7.6 g/cm³ |
| Electrical conductivity | 6 %IACS |
| Thermal conductivity | 35 W/m·K |
| Young's modulus | 110 GPa |
| Thermal expansion | 17 ×10⁻⁶/K |
| Magnetic permeability | 1.2 |
| Machinability index | n/a |
| NACE corrosion rating | 3 |
Norms & designations.
Designations
- CuZn19Al6MnFe
- NFL 14-707 · ASNA 3402
- NCT 15-631-01/02 · NCT 10-631-11
Forms & applications.
Bars
Round bar up to Ø 220 mm (8.66″); larger on request.
Tubes
Tube up to Ø 220 mm (8.66″); larger on request.
Friction-guidance rings
Friction-guidance (anti-friction) rings for landing-gear systems.
Bushes & bearings
Landing-gear bushes and bearings where wear and corrosion resistance are critical.
Strength and friction control where landing gears take the load
ZA9 pairs some of the highest strength of any copper-zinc alloy with anti-friction and oxidation resistance, qualified to NFL 14-707 for aerospace landing-gear duty, with no lead in the alloy.