Knowledge centre ITW Spraytec Expert
Which Jelt cold galvanizing should I choose?
Comparison of MATTE GALVANIZED , BRIGHT GALVANIZED , FLASH GALVANIZED
Why galvanize a metal surface?
Corrosion is a natural phenomenon that degrades metals when exposed to air, moisture, or chemical agents. Rust on iron, verdigris on copper, stains on stainless steel… all are visible signs of ongoing oxidation.
Cold galvanizing, also known as cold zinc plating, is a corrosion protection method primarily used on small areas (touch-ups). It allows for the repair of a previously hot-dip galvanized metal part that has been damaged. Although less effective than hot-dip galvanizing, cold galvanizing still offers high-performance and durable corrosion protection.
Jelt: a professional range of cold galvanizing
Experts in technical aerosols for over 60 years, Jelt offers a wide range of solutions for cold galvanizing, with three flagship products:
• GALVA MAT
• GALVA BRIGHT
• GALVA FLASH
All provide excellent protection, but meet different needs in terms of aesthetics, composition, coverage or compatibility with other coatings.
Technical and visual comparison: MATTE , GLOSS or FLASH ?
| Criteria | MATTE GALVANIZED | BRIGHT GALVANIZED | GALVA FLASH |
|---|---|---|---|
| Visual appearance | Anthracite grey finish, dull, “industrial” type | Metallic aluminum look, bright, slightly textured, decorative effect | Smooth, highly polished/metallic, ultra-glossy aluminum appearance, similar to hot-dip galvanized steel |
| Layer thickness | ≈ 30 µm | ≈ 30 µm | ≈ 30 µm |
| Drying | Quick – can be handled after 15 minutes | Quick – can be handled after 15 minutes | Normal – can be handled after 20 minutes |
| Aesthetic | Less visually appealing | More attractive, decorative effect | More prestigious, a new look |
| Type of pigments | 100% pure zinc | Combination of zinc and aluminum for shine | High aluminum content for ultra-shine |
| Zinc content | High | Weak | High |
| Anti-corrosion power | Excellent, double sacrificial power and barrier | Very good, less durable in very aggressive environments | Very good, less durable in very aggressive environments |
| Membership for recovery | Excellent base for painting | Not applicable | Not applicable |
| Touch/texture | Smooth, slightly textured | Still grainy, dark grey | Smooth, light grey |
| Covering power | Excellent | Very good | Very good |
| Surface covered with an aerosol | 3 to 4 m² | 3 to 4 m² | 3 to 4 m² |

Test the effectiveness of Jelt! Request a sample to see for yourself the performance of our cold galvanizing solutions: Request Free Sample
Want to see our products in action? Watch our demonstration videos and find the perfect solution for your needs on Jelt’s YouTube channel: link
