Exterior durable polyester powder coatings MT-610
We are a manufacturer based in China, specializing in high-quality Exterior durable polyester powder coatings MT-610 for industrial clients worldwide. Technical support and custom formulation available.
Category：powder Coating | Brand：MT
Introduction
MT-610 exterior durable polyester powder coating is a TGIC-free polyester system for outdoor exposure, with good weather resistance from a single coat and a long service life. It is available in a wide range of colours and finishes.
Typical Uses
Outdoor furniture, playground equipment, signs, fencing, vending machines and general metal finishing; also suitable indoors where required.
Powder Properties
| Chemical type | Polyester – TGIC Free |
| Density | 1.2–1.9 g/cm³, depending on colour and effect |
| Recommended film thickness | 60–90 µm |
| Shelf life | 24 months below 30°C; 12 months below 35°C |
| Storage | Dry, cool (≤ 30°C); reseal opened boxes |
| Curing schedule | 30–40 min at 170°C; 10–20 min at 180°C; 8–16 min at 200°C (object temperature) |
Pretreatment & Application
Galvanised steel needs multi-stage pretreatment (zinc phosphate or chromate conversion) or controlled sweep blasting; degassing or anti-bubble additives may be required. Zinc phosphating of ferrous metals improves corrosion resistance; aluminium may need chromate conversion. Apply by manual or automatic electrostatic spray at the recommended film thickness.
Mechanical Tests (lab reference)
| Test | Typical value | Method |
|---|---|---|
| Adhesion | Class 0 | ISO 2409 (2 mm cross-hatch) |
| Erichsen cupping | Pass 5 mm | ISO 1520 |
| Flexibility | Pass 5 mm | ISO 1519 |
| Hardness | No penetration to substrate | ISO 1518-1 (2000 g) |
| Impact resistance | Pass 2.5 J reverse & direct | ISO 6272-2 (d/r) |
Lab reference conditions: zinc-phosphated polished steel, cured 10 min at 200°C, film 60–70 µm. Actual results depend on substrate, process and service conditions.
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