Nickel Plating on Brass
Nickel Plating on Brass
Brass is an alloy of copper and zinc. While copper naturally accepts nickel, the presence of zinc makes the material more susceptible to dezincification in harsh environments. Nickel plating forms a protective barrier that limits this phenomenon and provides long-lasting corrosion resistance to the part.
Faucets & Plumbing
Fittings and valves protected against dezincification.
Hardware & Locksmith Services
Parts subject to frequent handling and resistant to wear.
Decor & Lighting
Primer for chrome plating, with a uniform silver finish.
Instrumentation & Connectivity
Dimensional accuracy and a durable finish.
Why nickel-plate brass?
Nickel plating improves the performance of brass by giving it properties that the alloy does not naturally possess.
Anti-corrosion
Brass is highly resistant to many environments, but it can be susceptible to corrosion and, in some cases, dezincification. A nickel plating forms a protective barrier that shields the surface from corrosive agents and extends the service life of the parts.
Hardness & Wear
Harder than brass, nickel improves resistance to friction, scratches, and abrasion. This property is particularly sought after for mechanical parts, fittings, and components subjected to repeated handling.
Decorative or functional finish
Nickel is an excellent base coat for chrome plating, gold plating, or silver plating. It improves the adhesion of the finish coatings and ensures their long-term stability.
Performance Improvement
In the connector, electronics, and electrical distribution industries, nickel protects brass while providing a surface suitable for subsequent treatments and meeting reliability requirements.
A project involving nickel plating on brass?
Please send us your plans or specifications. Our team will get back to you as soon as possible with a customized technical proposal and quote.
Why is nickel plating essential for brass?
The first challenge is dezincification. In certain environments—particularly those involving hot or slightly acidic water—the zinc in brass can dissolve. This phenomenon gradually degrades the alloy’s mechanical properties. Nickel plating acts as an effective barrier between the brass and its environment, thereby reducing the risk of dezincification and extending the service life of the parts.
The second point to watch for concerns the hydrogen generated during electrolytic nickel plating. On certain brass parts with high internal stresses or significant work hardening, hydrogen absorption can, in specific cases, affect mechanical behavior. When warranted by the application, a dehydrogenation heat treatment is performed after plating to remove the absorbed hydrogen and ensure the part’s performance.
Our brass nickel-plating process
To achieve a neat, long-lasting finish, the process must be carried out perfectly.
Analysis of the Play
Identification of the brass grade, application, and mechanical stress.
Surface Preparation
Degreasing, alkaline cleaning, and pretreatment.
Brass Activation
Controlled acid etching, followed by immediate transfer to the nickel plating bath to prevent reoxidation
Nickel deposit
Chemical nickel plating or electrolytic nickel plating, depending on the functional requirements and expected performance.
Quality Control
X-ray fluorescence thickness measurement, adhesion testing, and dehydrogenation treatment when required by the application.
Learn more about brass plating
Do you have questions about nickel plating on brass? Find the answers to the most frequently asked questions here!
Does nickel-plated brass rust?
Brass itself does not rust, but it can undergo dezincification: the zinc in the alloy selectively dissolves in corrosive environments. A continuous nickel deposit blocks this process and provides long-term protection for the part.
How long does nickel plating on brass last?
Service life depends primarily on the thickness of the coating, operating conditions, and the environment.
When used indoors, high-quality nickel plating can retain its properties for several decades.
In humid, salty, or industrial environments, applying the appropriate thickness and performing regular maintenance can significantly extend its service life.
Can all brass alloys be nickel-plated?
The vast majority of brass alloys can be nickel-plated. However, certain alloys containing specific proportions of lead or other elements may require special preparation to ensure excellent adhesion of the plating.
What is the recommended nickel thickness?
The thickness depends on the application:
- 2 to 5 µm: decorative finish.
- 5 to 15 µm: standard corrosion protection.
- 15 to 30 µm and above: industrial applications subject to significant mechanical or chemical stress.
The choice is determined based on requirements for strength, service life, and dimensional tolerances.
Why nickel-plate a brass part?
Nickel plating improves corrosion resistance, reduces wear, and increases the surface hardness of brass.
It also produces a uniform, attractive finish—whether glossy or matte— while preparing the part for chrome plating or other surface treatments.
Let's talk about your brass part
Send us your plan or request, and we'll get back to you as soon as possible with technical advice on the most suitable process and an estimated timeline.
Nickel plating on brass is a very broad topic.
Materials Suitable for Nickel Plating
At Wipelec, we put our expertise in the surface treatment of copper alloys to work for your projects. Thanks to our expertise in electroless nickel plating, we guarantee excellent deposit adhesion, long-lasting corrosion protection, and performance that meets the requirements of even the most technically demanding applications.
