Overview
An American nickel-aluminium bronze whose unique combined properties of high strength, good fatigue, excellent corrosion resistance in sea water, non-sparking and wear properties make it a popular choice across the whole spectrum of industry.
It has very high anti-galling properties under load and is used on a world basis for aerospace landing gear bushes and bearings where its strength, fatigue, wear properties, shock resistance and corrosion resistance are well proven.
Content on this page is compiled from the UNS C63000 datasheet published on copperalloys.net.
Key features
Corrosion resistance
Good resistance to corrosion.
Hydrogen embrittlement immunity
Immune to hydrogen embrittlement.
Biofouling immunity
Immune to bio-fouling.
Uniformity of properties
Uniform mechanical properties across the section.
Anti-galling
Anti-galling behaviour under load against mating components.
Chemical composition (% by weight)
Specification limits from the published standard.
| Element | UNS C63000 |
|---|---|
| Mn | ≤ 1.5 |
| Al | 9–11 |
| Ni | 4–5.5 |
| Sn | ≤ 0.2 |
| Si | ≤ 0.25 |
| Fe | 2–4 |
| Zn | ≤ 0.3 |
Mechanical property requirements
Minimum values required by the published specification.
| Property | UNS C63000 |
|---|---|
| Tensile Strength Rm (MPa) | ≥ 620 |
| 0.2% Proof Stress Rp0.2 (MPa) | ≥ 235 |
| Yield Strength at 0.5% Extension Under Load | ≥ 250 MPa |
| Elongation (%) | ≥ 10 (in 2 in / 50 mm) |
Typical mechanical properties by condition and size
Typical values as published on copperalloys.net - indicative only.
| Condition | Size (mm dia) | Size (in dia) | Yield 0.2% (MPa) | UTS (MPa) | Elong % | Hardness (HB) |
|---|---|---|---|---|---|---|
| 020 | 75–300 | 3–12 | 300–350 | 600–700 | 12–21 | 180–240 |
| HR50 | 50–80 | 2.0–3.2 | 380–430 | 725–800 | 10–15 | 180–240 |
| TQ50 | 80–130 | 3.2–5.1 | 320–400 | 620–770 | 15–20 | 180–240 |
- • 020 - Hot forged and annealed.
- • HR50 - Drawn and stress relieved (high strength).
- • TQ50 - Quench hardened and temper annealed.
Typical physical properties
As published on copperalloys.net for UNS C63000.
- Density
- 7580 kg/m³ @ 20 °C
- Specific gravity
- 7.58
- Specific heat
- 376.7 J/kg·°C @ 20 °C
- Electrical conductivity
- 0.041 MS/cm @ 20 °C
- Thermal conductivity
- 0.391 W/cm·°C @ 20 °C
- Thermal expansion
- 15.5 × 10⁻⁶ per °C (20–300 °C)
- Electrical resistivity
- 19.28 µΩ·cm @ 20 °C
- Relative magnetic permeability
- 1.4 µ
- Machining index
- 20 (vs free-machining brass = 100)
- Modulus of rigidity
- 46,884 MPa
- Modulus of elasticity
- 125,484 MPa
- Melting range
- 1049–1071 °C
- Hot working range
- 788–927 °C
- Cold working
- Limited
- Cryogenic
- Retains properties down to −190 °C
- Elevated temperature
- Retains properties to 350 °C
Applications
Typical uses
- Marine fasteners, hardware and fittings
- Aerospace landing gear components
- Thrust washers
- Gears
- Control bushes
- Faucet balls
Also suitable for
- Non-sparking safety tooling
- Valve stems and seats
- Wear plates
- Welding clamps
- Valve spindles and components
- Fasteners and bearing bushes
- Firefighting equipment for offshore platforms
Cast, Wrought (forged)
Bar, Rod, Plate, Sheet, Tube, Sections, Rings
Aerospace, Marine, Naval Defence, Petrochemical
Manufacturing ranges
With very little limitation on size, C63000 is available as standard in rod, bar, blocks, rings, tubes and discs up to a piece weight of 4,500 kg / 9,900 lbs.
Copper Alloys is also regularly making customised shaped forgings and can increase piece weight up to 20,000 kg / 44,000 lbs.
Copper Alloys Ltd also offers finished machined components in all alloys, complete project management and tailored mechanical properties beyond those of the specification to meet special requirements.
Joining & welding
Recommended welding processes.
- Tungsten inert gas (TIG) / gas tungsten arc (GTAW)
- Metal inert gas (MIG) / gas metal arc (GMAW)
- Manual arc (MMA)
- Friction welding
- Laser welding
- Brazing (possible with special fluxes)
- Soldering or oxy-acetylene - not recommended
Equivalent specifications
US
European
Frequently asked questions
What are typical applications of C63000?+
C63000 is used across marine fasteners and hardware, aerospace landing gear bushes and bearings, thrust washers, gears, control bushes and non-sparking safety tooling - exploiting its strength, wear, corrosion resistance and anti-galling behaviour.
How is C63000 typically supplied?+
As standard in rod, bar, blocks, rings, tubes and discs up to 4,500 kg piece weight, with customised shaped forgings up to 20,000 kg.
How is C63000 welded?+
TIG (GTAW), MIG (GMAW), manual arc, friction and laser welding are all recommended. Brazing is possible with special fluxes; soldering and oxy-acetylene are not recommended.
Discuss your UNS C63000 requirements
Copper Alloys Ltd manufactures Nickel-Aluminium Bronze to UNS C63000 - from stocked bar, rod and rings to fully-machined components and shaped forgings up to 20,000 kg piece weight.
Information provided is for reference only
All chemical, mechanical, production, product-form and industry figures on this page are indicative estimates compiled for general reference and to aid early-stage material selection. They are not engineering, procurement, safety, regulatory or design advice and must not be relied upon as such.
Before specifying, purchasing or using any material, confirm the requirements against the current controlled version of the relevant standard and obtain a certified material test report and written technical confirmation from Copper Alloys Ltd or another qualified foundry. Copper Alloys Ltd accepts no liability for any loss or damage arising from reliance on the information presented on this page.