ZRC Cold Galvanizing Compound
ZRC is a zinc rich coating for steel. It is sold online and through dealers.
Updated . Edited by: Ilyass Ben Hakim.
Where to buy
- ZRC WorldwideOfficial site · zrcworldwide.com
- Search AmazonLive search · amazon.com
- Search eBayLive search · ebay.com
- Google ShoppingLive search · google.com
ZRC Worldwide sells direct and has a dealer locator. Industrial supply houses and welding suppliers also stock it.
Professional insight
Coating inspectors check the specification first. Then they confirm the zinc content of the dried film.
- Original ZRC is gray and will not match new galvanizing.
- Galvilite is the bright silver option for galvanized repairs.
- Bare steel usually needs more than one coat.
- Match the product to your VOC rules.
Check the label
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Types
| Product | Best for |
|---|---|
| ZRC Cold Galvanizing Compound | General steel protection, gray finish |
| ZRC 221 | Lower environmental impact solvent version |
| ZRC Zero-VOC | Water based, strict VOC areas |
| ZRC Galvilite | Touching up hot-dip galvanized steel |
Specs to match
- Zinc in dry film
- 95% by weight
- Zinc dust
- ASTM D520 Type III
- Heat limit
- 350 F (177 C) continuous
The maker lists DOD-P-21035A, MIL-P-26915A, ASTM A780 and SSPC-Paint 20. Confirm your job spec on the current data sheet.
How to use it
- 1Remove rust, scale, oil and loose paint.
- 2Stir or shake until zinc is fully mixed.
- 3Apply by brush, roller or spray.
- 4Let each coat dry per the data sheet.
- 5Add a second coat on bare steel if needed.
Common questions
- Is ZRC the same as hot-dip galvanizing?
- No. It is a zinc rich coating. The maker claims comparable galvanic protection.
- Can I paint over ZRC?
- Many topcoats work. Check the technical data sheet for compatible types.
- Which ZRC matches shiny galvanized steel?
- Galvilite has a bright silver finish for that purpose.