Zinc-Rich Powder Coating is a high-performance protective coating designed to provide long-term corrosion protection through cathodic protection mechanisms. You use this coating primarily as a functional anti-corrosion layer for steel substrates exposed to aggressive environments. With a high zinc content and stable mechanical performance, it is well suited for applications requiring extended salt spray resistance and strong adhesion to properly pretreated metal surfaces.
You can apply this zinc-rich powder coating to:
Structural steel components
Industrial equipment frames
Construction steel parts
Infrastructure components exposed to corrosive environments
Test Substrate:
All performance evaluations are conducted on properly degreased and derusted steel panels, representative of common industrial steel substrates.
| Item | Performance | Test Standard |
|---|---|---|
| Impact Resistance | 50 kg·cm | ISO 6272 |
| Bending Resistance | Φ 2 mm | ISO 1519 |
| Adhesion | Class 0 | ISO 2409 / ASTM D3359 |
| Pencil Hardness | > H | ASTM D3363 |
| Mortar Resistance | No visible change | EN ISO 10545-14 (reference method for chemical resistance) |
| Salt Spray Resistance | 1000–2000 h | ISO 9227 (NSS) |
Note:
All data above are obtained under controlled laboratory conditions. Actual performance may vary depending on substrate condition, surface pretreatment, application parameters, curing conditions, and service environment.
You obtain excellent corrosion protection through zinc-based cathodic protection
You benefit from long salt spray resistance, suitable for harsh industrial environments
You achieve strong adhesion to properly pretreated steel substrates
You gain stable mechanical properties, maintaining integrity under impact and bending stress
You can use it as a functional anti-corrosion layer in multi-coat powder coating systems
We helped a steel structure manufacturer extend service life in coastal environments.
By applying Zinc-Rich Powder Coating as the primary corrosion protection layer, you achieved salt spray resistance exceeding 1000 hours under ISO 9227 testing. The coating maintained Class 0 adhesion and stable mechanical performance after bending and impact testing, significantly reducing corrosion-related maintenance during long-term outdoor exposure
Powder coatings can be categorized by resin system (epoxy, polyester, hybrid, polyurethane), appearance (smooth, texture, hammer, metallic, pearlescent), or performance level (anti-corrosion, heat-resistant, UV-resistant, architectural grade, automotive grade).
Powder coatings offer thousands of colors in gloss, matte, satin, metallic, candy, texture, wrinkle, hammer tone, wood grain, fluorescent, and other custom effects. Special powders can create soft-touch, anti-scratch, anti-fingerprint, or anti-graffiti surfaces.
The process generally includes surface pretreatment (degreasing, phosphating, chromating, sandblasting), drying, electrostatic spraying, curing in an oven, and cooling. A well-controlled pretreatment and curing process ensures strong adhesion and long service life.
Powder coatings are environmentally friendly, solvent-free, and produce minimal waste. They offer excellent corrosion resistance, weather durability, mechanical strength, and uniform film appearance. The coating is tough, impact-resistant, scratch-resistant, and has a long lifespan.
Powder coatings are widely used in appliances, aluminum profiles, architectural components, automotive parts, bicycles, furniture, outdoor equipment, machinery, electrical cabinets, pipeline systems, and general industrial and consumer goods.
Powder coating is a dry finishing technology where finely ground powder is electrostatically sprayed onto a metal or non-metal surface and then cured at high temperature. After curing, the powder melts into a continuous, durable, and decorative coating layer.
Powder coating protects the substrate from corrosion, weathering, chemical attack, and mechanical wear. It also provides decorative appearance with rich colors, gloss levels, textures, and special effects.
In many industrial applications, powder coating outperforms liquid paint. It forms a thicker and tougher coating, resists corrosion and chemicals better, and does not contain VOCs. It also provides excellent consistency and cost-effective mass production.
It is called powder coating because the coating material is a solid powder instead of a liquid paint. The coating is formed by melting and curing powder particles under heat.
Powder coatings include several families depending on resin chemistry:
• Epoxy powders
• Polyester powders
• Epoxy-polyester hybrid powders
• Polyurethane powders
• Acrylic powders
• Fluorocarbon (PVDF) powders
Each type has its own performance features such as corrosion resistance, UV resistance, chemical resistance, outdoor durability, or decorative properties.
Powder coatings are based on thermoset or thermoplastic resins combined with pigments, curing agents, fillers, additives, and in some cases metallic or effect particles. Common substrates include steel, aluminum, galvanized metal, MDF, and certain heat-resistant plastics.
The lifespan depends on powder type, film thickness, application method, pretreatment, and service environment. Indoor coatings can last more than 10–20 years. High-grade outdoor polyester or fluorocarbon powders can last 15–25 years or longer under UV exposure.
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