Overview
Also known as C 63200, C632, Nickel Aluminium Bronze C63200, ASTM B150 C63200.
An American nickel-aluminium bronze with a unique combination of properties resulting in high strength, good fatigue and excellent corrosion resistance in sea water.
C63200 benefits from a quench and temper heat treatment to enhance mechanical properties. The heat treatment was developed to maximise the corrosion resistance in sea water where it is used extensively in marine defence applications. Its non-sparking and wear properties also make it an excellent choice for weapon handling systems.
This nickel-aluminium bronze alloy has a proven track record, having been incorporated in the US submarine build program for many decades, and has now been used for wider applications within the commercial marine and petrochemical industries.
This is a wrought alloy that benefits from extreme consistency in properties, fine uniform grain structure and low cost volumetric inspection. Representative test pieces are taken giving accurate analysis of properties from material to component.
Content on this page is compiled from the UNS C63200 datasheet published on copperalloys.net.
Key features
Seawater corrosion resistance
Excellent resistance to seawater corrosion, ideal for naval and marine components exposed to salt water.
High strength & non-sparking
High strength with non-sparking behaviour - well-suited to marine defence applications.
Quench-and-tempered
Benefits from a quench-and-temper heat treatment developed to maximise seawater corrosion resistance.
Volumetric inspection
Fine uniform grain structure enables low-cost volumetric inspection with representative test pieces.
Chemical composition (% by weight)
Specification limits from the published standard.
| Element | UNS C63200 |
|---|---|
| Mn | 1.2–2 |
| Al | 8.7–9.5 |
| Cu | 78–100 |
| Ni | 4–4.8 |
| Pb | ≤ 0.02 |
| Si | ≤ 0.1 |
| Fe | 3.5–4.3 |
Mechanical property requirements
Minimum values required by the published specification.
| Property | UNS C63200 |
|---|---|
| Tensile Strength (ksi) | ≥ 90 |
| Yield Strength at 0.5% Extension Under Load | ≥ 50 ksi |
| Elongation (%) | ≥ 18 (4D or thickness) |
Typical mechanical properties
Typical values as published on copperalloys.net - indicative only.
| Property | Value |
|---|---|
| Tensile strength (N/mm²) | 630 |
| Proof / yield strength (N/mm²) | 300 |
| Elongation (%) | 15 |
Typical physical properties
As published on copperalloys.net for UNS C63200.
- Nominal composition
- CuAl9Ni4Fe4Mn2
- Alloy type
- Wrought
- Melting temperature range
- 1035 – 1054 °C
- Coefficient of friction
- 0.46
Applications
Marine Defence / Navy components
- Marine fasteners
- Bolts and nuts
- Weapons handling equipment
- Sonar equipment
- Thrust washers
- Gears
- Control bushes
- Cams
- Seawater valves
- Drive shafts
- Seawater pump bodies
- Non-sparking safety tooling
- Valve stems and seats
- Wear plates
- Welding clamps
- Valve spindles and bearing bushes
Industrial engineering components
- Condenser end plates for steam generation equipment and desalination plants
- Firefighting equipment for offshore platforms
Cast, Wrought
Bar, Rod, Plate, Sheet, Tube, Sections, Rings
Marine, Naval Defence, Aerospace, Petrochemical
Manufacturing ranges
C63200 is available in various formats including rods, bars, blocks, rings, tubes and discs.
Copper Alloys can modify existing alloys like C63200 for improved performance - many customers have benefited from this in the past.
Equivalent specifications
US
European navy specifications
British navy specifications
Welding
Frequently asked questions
What are the typical applications of C63200 alloy?+
C63200's high strength, non-sparking properties and exceptional resistance to corrosion in seawater mean it is typically used within the naval defence sector to create parts such as weapons handling equipment, wear plates, marine fasteners and seawater valves.
Can C63200 be welded?+
Yes, C63200 nickel-aluminium bronze is easily weldable using various welding techniques, including MIG and TIG.
Where can I buy C63200 metal alloy?+
You can order C63200 metal alloy in various formats at Copper Alloys, whether you need rods, bars, blocks, rings, tubes or discs.
Discuss your UNS C63200 requirements
Copper Alloys Ltd manufactures Nickel-Aluminium Bronze to UNS C63200 - 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.