Galmet ColdGal Cold Galvanizing Aerosol 400g
Available
Galmet ColdGal is a single pack, zinc-rich coating with 92% metallic zinc in the dry film for long term protection of steel from rust. The maker says it works by cathodic (galvanic) action between the steel and the zinc, and that zinc oxides and carbonates form in a scratch and reseal it (manufacturer-stated).
This 400g aerosol suits touch-up and repair of damaged hot-dip galvanizing, protection of welds and fabricated steel structures. The maker gives touch dry in 20 minutes, recoating after 8 hours, hard dry in 24 hours and coverage of up to 2m2 per can. Galmet is made in Australia by ITW Polymers & Fluids at Wetherill Park, NSW (manufacturer-stated).
Where this product is used
- Touch-up and repair of damaged hot-dip galvanizing (manufacturer-stated)
- Protection of welds (manufacturer-stated)
- Fabricated steel structures (manufacturer-stated)
- MRO industrial steel applications (manufacturer-stated)
- Fences, gates and ducting (manufacturer-stated)
- Trailers and exterior steelwork (manufacturer-stated)
Features
- 92% metallic zinc in the dry film with cathodic (galvanic) protection of the steel (manufacturer-stated)
- Self-healing action where zinc oxides and carbonates reseal a scratch (manufacturer-stated)
- Touch dry in 20 minutes, recoat after 8 hours and hard dry in 24 hours (manufacturer-stated)
- Recommended dry film thickness of 50 to 75 microns and a temperature range of -20°C up to 150°C (manufacturer-stated)
- Corrosion resistance of more than 2000 hours with no red rust in the ASTM B117 salt spray test (manufacturer-stated)
- Complies with AS 3750.9 Type I zinc-rich primer and the material requirements of ASTM A780 (manufacturer-stated)
- Covers up to 2m2 per 400g can (manufacturer-stated)
- Shake for one minute after the agitator ball moves, hold approximately 25cm away, and apply a mist coat first (manufacturer-stated)
- Not recommended for aluminium, stainless steel or plastic, and should not be painted over rusty steel (manufacturer-stated)
- SDS classifies it as an aerosol, UN 1950 Aerosols, Class 2.1, extremely flammable. See the SDS before use (manufacturer-stated)
Key specifications
| Specification | Detail |
|---|---|
| Brand | Galmet |
| Maker | ITW Polymers & Fluids, Wetherill Park NSW |
| Product | ColdGal Cold Galvanizing, aerosol |
| Pack | 400g aerosol |
| Classification | Organic zinc-rich primer |
| Colour | Grey |
| Zinc | 92% metallic zinc in the dry film |
| Touch dry | 20 minutes |
| Recoat | 8 hours |
| Hard dry | 24 hours |
| Dry film thickness (recommended) | 50 to 75 microns |
| Coverage | Up to 2m2 per 400g can |
| Temperature range | -20°C up to 150°C |
| Corrosion resistance | More than 2000 hours with no red rust, ASTM B117 |
| Adhesion | Cross-cut 0 (100% adhesion), AS 1580.408.4 |
| Compliance | AS 3750.9 Type I zinc-rich primer, material requirements of ASTM A780 |
| Surface preparation | Remove rust, mill scale and old paint, abrasive blast clean to AS1627.4 Class 2 for best results, degrease with a no-residue solvent such as Galmet Enamel Thinner 300C |
| Topcoats | Galmet DuraGal, Fence Gutter Fascia paint, SprayPaint and RustPaint, or Keytite Etch Primer over it |
| Storage | Cool place out of the sun, not above 50°C, shelf life 2 years |
| Dangerous goods (SDS) | UN 1950 Aerosols, Class 2.1 |
| Maker part number | GGCGA |
Specification values are manufacturer-stated (Galmet technical data sheet, safety data sheet and Galmet Product Guide, part number GGCGA).
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