Yes. ZERUST® provides several non-staining rust preventatives for aluminum and copper, engineered to protect multimetal assemblies and other non-ferrous alloys, as well as steel, without causing discoloration, tarnish, or surface spotting. When working with multimetal parts or components containing aluminum or copper, it is important to choose a corrosion preventative that produces a clear, non-staining film, is compatible with the alloy, and will not alter surface appearance or interfere with subsequent operations such as assembly or finishing. Several ZERUST® products are designed for this purpose. For example, ZERUST® Axxatec™ 48C is a water-based, non-staining corrosion inhibitor engineered for aluminum and yellow metals while also protecting ferrous substrates; it dries to a safe, clear film ideal for storage and shipment. In addition, ZERUST® Axxatec™ DA-40AL provides dual-action cleaning and corrosion protection for aluminum and other multimetal parts, making it suitable when both surface preparation and short-term protection are required. Lastly, ZERUST® Axxatec™ 80C offers a clear, non-staining coating designed for aluminum, ferrous metals, and yellow metals, making it an excellent choice for components requiring a clean, residue-free appearance during storage, processing, or shipment.
Many ZERUST® Axxanol™ rust preventatives, including Axxanol™ A35CD-32, a dry-to-touch, clear film RP, and Axxanol™ 718-ESS, a thin, water-displacing, non-hardening electrical corrosion inhibitor, also provide protection without leaving heavy, oily, or dark residues that can stain copper or aluminum surfaces. These products are designed to be non-staining and easy to clean, making them suitable for multimetal parts and precision-machined components that require pristine surface appearance.
Like all corrosion preventatives, compatibility should still be verified for the specific alloy and finish being protected, as appearance can vary between different types of aluminum, copper, and surface treatments. ZERUST® best practice includes testing the product on a small, non-visible area first, ensuring the film leaves no haze or discoloration under your actual storage or process conditions. For applications where you want zero surface residue, ZERUST® also offers VCI (Vapor Corrosion Inhibitor) packaging solutions, such as ICT® VCI film, ICT® VCI paper, and VCI emitters (Vapor Capsules, ActivPak®, Z-PAK®) that protect both ferrous and non-ferrous metals without touching the metal surface at all. Since VCI protection is molecular and leaves no coating behind, it is ideal for aluminum or copper parts that must remain clean, bright, and immediately ready for welding, soldering, painting, or assembly.
By selecting the appropriate non-staining rust preventatives for aluminum and copper, whether Axxatec™ or Axxanol™ corrosion inhibitor, or by using residue-free VCI packaging, ZERUST® provides reliable, appearance-safe protection for aluminum, copper, brass, and multimetal components during processing, storage, or shipment. This selection and validation process is part of the ZERUST® Z-CIS® (Corrosion Inhibiting System) methodology, ensuring each application receives the correct product, application method, and protection level based on alloy type, environmental conditions, and required storage duration. For guidance on selecting the best solution for your needs, you can contact ZERUST®/EXCOR® to speak with a technical service representative.
Axxatec™ 48C is a water-based aluminum rust preventative liquid concentrate that also protects ferrous and yellow metals during indoor storage, shipping, and assembly.
Axxatec™ DA-40AL is a dual-action aluminum rust preventative and cleaner with low foaming that is designed to provide short-term rust protection and light-duty cleaning.
Axxanol™ A35CD-32 is a solvent-based, non-staining rust preventative that forms a clear, thin, near dry-to-touch RP film. As a result, it provides powerful corrosion protection against aggressive environments, such as salt air and humidity.
Axxanol™ 718-ESS is an electrical corrosion inhibitor spray that leaves a thin, water-displacing, non-staining, non-hardening, soft film, providing protection against challenging environments where acid gas vapors and humidity are present.
ICT®510-C Non-ferrous VCI Film provides cost-effective and versatile protection against corrosion damage for non-ferrous metals such as aluminum, copper, brass, and bronze, in shipping, storage, and work-in-progress.
ICT®420 is an acid-free, pH-neutral, and non-abrasive VCI kraft paper that merges the practicality and cost-efficiency of paper-based packaging with advanced corrosion protection. Consequently, it streamlines the preservation of metals during work-in-progress, shipping, and storage.
Vapor Capsules are portable VCI emitter diffusers containing proven ZERUST® Vapor Corrosion Inhibitors (VCI). They protect metals in hard-to-reach areas of control panels, electrical cabinets, or other enclosed spaces from corrosion, even when they are in operation. Additionally, use these VCI emitter diffusers as a supplement to other ZERUST® VCI packaging products for added protection.
ActivPak® is a versatile and powerful fast-acting VCI sachet designed to address flash rust and corrosion concerns in demanding scenarios, including overseas shipping and polluted factory environments.
Z-PAK® is an economical, effective, and easy-to-use vapor corrosion inhibitor (VCI) diffuser packet that can be used alone or, more typically, with other ZERUST® packaging products to provide robust temporary corrosion protection for ferrous metals during shipment, storage, or work-in-progress.
