ZD6180 Epoxy Primer for Galvanized Steel
Two-pack · bonds to galvanized zinc
A two-component anti-corrosion primer composed of epoxy resin, zinc chromate anti-corrosive pigment, solvents and additives with a polyamide curing agent. Designed as the tie-coat over hot-dip galvanized surfaces before topcoating.
Key features
- Excellent adhesion on hot-dip galvanized workpieces
- Multi-purpose epoxy primer — cures at low temperature, fast dry and fast recoat
- No limit on maximum recoat interval
- Accepts all high-performance topcoats, including polyurethane and fluorocarbon
- Also bonds to steel and aged coatings in maintenance work
Technical data
| Property | Value |
|---|---|
| Color | Grey |
| Gloss | Matt |
| Volume solids | 51 ± 3% |
| Density | 1.4 ± 0.1 kg/L |
| Components | Two |
| Mix ratio | 25 : 3 (base : hardener) |
| Thinner | X-500 epoxy thinner |
| Pot life | 3.5 h @ 25 °C |
| VOC | ≤500 g/L |
| Flash point | >25 °C |
| Pack size | 25 kg (A) + 3 kg (B) |
| Shelf life | 1 year (unopened) |
Film build and coverage
| DFT (µm) | WFT (µm) | Coverage (kg/m²) |
|---|---|---|
| 30 | 58.8 | 0.082 |
| 50 | 98.0 | 0.137 |
| 80 | 156.8 | 0.219 |
Drying and recoat
| Substrate temp. | 5 °C | 15 °C | 25 °C | 35 °C |
|---|---|---|---|---|
| Touch dry | 4 h | 2 h | 1 h | 30 min |
| Hard dry | 24 h | 16 h | 12 h | 8 h |
| Min. recoat | 24 h | 16 h | 12 h | 8 h |
Max. recoat: Unlimited, but any chalking from long exposure must be removed completely before overcoating.
Application
| Method | Airless spray | Conventional spray | Brush / roller |
|---|---|---|---|
| Nozzle | 0.43–0.58 mm | 1.5–2.5 mm | — |
| Pressure | 150–200 kg/cm² | 3–4 kg/cm² | — |
| Thinning | 0–10% | 10–20% | 5–10% |
Printable version (image) → Download TDS original (PDF, English) ↓
Surface preparation
New steel: degrease and wash off salts with fresh water. Remove weld spatter, grind welds and sharp edges. Blast to Sa 2.5 (ISO 8501-1), profile Rz 30–75 µm. Prime within 4 hours.
Shop-primed surfaces: blast welds, heat-straightened areas and damage to Sa 2.5, or power-tool clean to St 3. Soluble zinc salts (white rust) must be washed off with fresh water and a stiff brush before overcoating.
Maintenance: remove grease, salts, dust and loose or damaged old coating.
Coating systems
| Preceding coat | Directly onto steel blast cleaned to Sa 2.5 / St 3, or onto approved shop primer, zinc-rich primer or epoxy primer. |
|---|---|
| Consequent coat | Epoxy, polyurethane and fluorocarbon topcoats. |
Related products
Not sure which grade fits your environment?
Send us the structure, the steel condition and the corrosivity category (C2 to CX). We reply with a coating system, film builds and a delivered price.