Aluminum Extrusion Powder Coating is a thermosetting polyester powder coating system mainly composed of saturated polyester resin and a TGIC curing agent. You can use this coating specifically for aluminum extrusion profiles where consistent appearance, mechanical strength, and outdoor durability are required. It provides stable decorative performance combined with reliable weather resistance, making it suitable for architectural and industrial aluminum applications.
Architectural aluminum extrusion profiles
Window and door frames
Curtain wall systems and aluminum panels
Railings, handrails, and façade components
Industrial aluminum frames and structural profiles
(1) ISO 2409 – Paints and varnishes: Cross-cut adhesion test
(2) ISO 1519 – Paints and varnishes: Bend test (cylindrical mandrel)
(3) ISO 6272 – Paints and varnishes: Rapid deformation (impact resistance)
(4) ISO 1520 – Paints and varnishes: Cupping test
(5) ISO 9227 – Corrosion tests in artificial atmospheres (salt spray)
(6) ISO 6270 – Paints and varnishes: Resistance to humidity
(7) ASTM G154 – Standard practice for operating UV fluorescent apparatus for exposure of nonmetallic materials
(8) Qualicoat Class 1 – Architectural aluminum powder coating requirements (applicable to selected products)
| Performance Item | Test Standard | Technical Specification |
|---|---|---|
| Pencil Hardness | GB/T 6739 | ≥H |
| Adhesion | GB/T 9286 | Grade 0 |
| Bending | GB/T 6742 | 03 mm |
| Impact | GB/T 1732 | 50 kg·cm |
| Cupping | GB/T 9753 | ≥6 mm |
| Salt Spray Resistance | GB/T 1771 | 1000 h: slight rust, blistering, peeling area ≤3 mm² |
| Damp Heat Resistance | GB/T 1740 | 1000 h: slight gloss loss, discoloration |
| Accelerated Weathering Test | ASTM G154 / 500UV 0.78 W/m² @ 340 nm 500 h | Slight gloss loss, discoloration |
You achieve uniform surface appearance on aluminum extrusion profiles
You benefit from excellent decorative properties with stable gloss and color
You obtain good mechanical strength suitable for handling and installation
You gain high weather resistance for long-term outdoor exposure
You can select gloss, semi-gloss, or matte finishes based on architectural design needs
You have access to standard, weather-resistant, chemical-resistant, textured, heavy-duty, and masterbatch color series
Selected products meet Qualicoat Class 1 requirements for architectural aluminum use
You receive the product in sealed, moisture-resistant packaging to ensure powder stability during transportation and storage. The standard packaging is 25 kg per carton, suitable for automated and manual powder coating lines.
1. Is this powder coating specifically designed for aluminum extrusion profiles?
Yes. You use this product for aluminum extrusion applications where surface consistency and dimensional compatibility are required.
2. Can this coating be used for architectural aluminum systems?
Yes. Selected grades comply with Qualicoat Class 1 standards, making them suitable for architectural aluminum components such as windows, doors, and curtain walls.
3. What surface finishes are available?
You can choose from gloss, semi-gloss, and matte finishes, as well as textured options depending on project requirements.
4. How does the coating perform under outdoor conditions?
You can expect stable weather resistance with controlled gloss retention and color stability under standard accelerated weathering tests.
5. What pretreatment is recommended before application?
You should use appropriate aluminum pretreatment systems, such as chromate-free conversion coating, to ensure optimal adhesion and corrosion resistance.
6. Is color customization possible for aluminum extrusion projects?
Yes. You can request standard colors, masterbatch colors, or customized shades according to architectural design specifications.
7. How should the product be stored?
You should store the powder in a cool, dry environment away from direct sunlight to maintain flowability and performance consistency.
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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