MATERIALS, ADHESIVES AND COATINGS
Gardobond C and Gardobond X conversion coatings for aluminum (chromate and chromium-free Zr/Ti)
Country: Germany · Model: Gardobond C / Gardobond X
Conversion coatings of two types for aluminum alloys and mixed-metal structures. Gardobond C gives a chromate layer, and Gardobond X is a chromium-free thin-film system based on zirconium and titanium. The layer forms by a chemical reaction of the solution with the metal and serves as a base for the paint coating.
- Gardobond C
- chromate conversion coatings for iron, steel, galvanized steel and aluminum
- Gardobond X
- thin-film Zr/Ti-based systems for aluminum and multi-metal
- Functions
- corrosion protection, paint coating adhesion, reduced friction and wear, electrical insulation
- Chromium-free versions
- yes (free of Cr and Ni)
Technical specifications
| Gardobond C | chromate conversion coatings for iron, steel, galvanized steel and aluminum |
|---|---|
| Gardobond X | thin-film Zr/Ti-based systems for aluminum and multi-metal |
| Functions | corrosion protection, paint coating adhesion, reduced friction and wear, electrical insulation |
| Chromium-free versions | yes (free of Cr and Ni) |
| Related | anodizing, Gardo Etch etching, Gardoclean cleaners |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The conversion layer grows on the metal surface in reaction with the solution. It protects against corrosion, improves adhesion of the subsequent paint coating, reduces friction and wear, and in some cases also gives electrical insulation. The chromate coatings C work on iron, steel, galvanized steel and aluminum. The Zr/Ti-based X systems are designed for aluminum and multi-metal structures and give protection and adhesion without hexavalent chromium; for classic applications the manufacturer offers chromium-free and nickel-free alternatives. In the process chain the coating comes after cleaning (Gardoclean, Ardrox) and etching or deoxidizing. For aluminum anodizing, cleaners and Gardo Etch etching additives are supplied. The technology is described on the site as general industrial, and explicit aviation specifications such as MIL-DTL-81706 or MIL-DTL-5541 are not given for specific grades.
How to choose
If the part has iron, steel or galvanized steel and a chromate layer is permitted, Gardobond C is suitable. For aluminum and multi-metal assemblies without hexavalent chromium take Gardobond X based on Zr/Ti. Suitability in aviation cannot be considered confirmed; it is checked against the technical data sheet (TDS) and OEM approvals. Surface preparation before application is covered by the Surface Preparation line.
Request a price and lead time
Gardobond C and Gardobond X conversion coatings for aluminum (chromate and chromium-free Zr/Ti). We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
How does Gardobond C differ from Gardobond X?
C forms a chromate layer on iron, steel, galvanized steel and aluminum. X is a chromium-free thin-film Zr/Ti-based system for aluminum and multi-metal.
Are there options without hexavalent chromium?
Yes, Gardobond X systems work without hexavalent chromium. For classic applications chromium-free and nickel-free alternatives are also offered.
What functions does the conversion layer perform?
It protects against corrosion, improves paint coating adhesion, reduces friction and wear, and sometimes gives electrical insulating properties.
What should be done with the surface before conversion coating?
Clean it (Gardoclean, Ardrox) and etch or deoxidize it. For aluminum anodizing there are cleaners and Gardo Etch etching additives.
Is aviation use confirmed to MIL specifications?
The manufacturer's data do not give MIL-DTL-81706 or MIL-DTL-5541 specifications for specific grades, so suitability is clarified from the TDS and OEM approvals.
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