Frame & chassis powder coatings MT-A400 series
We are a manufacturer based in China, specializing in high-quality Frame & chassis powder coatings MT-A400 series for industrial clients worldwide. Technical support and custom formulation available.
Category：powder Coating | Brand：MT
Introduction
The MT-A400 Series consists of weather-resistant pure polyester powder coatings developed for automotive and other vehicle frame and chassis components. Designed for metal parts exposed to mechanical impact and outdoor conditions, the coatings provide corrosion protection, flexibility, and resistance to stone impact and UV exposure.
Coating Characteristics
Corrosion Resistance
Helps protect coated metal components against corrosion.
Bending Resistance
Supports coating flexibility under bending and deformation tests.
Stone Impact & UV Resistance
Designed to withstand stone impact and outdoor UV exposure.
Application
Suitable for frame and chassis components across various vehicle models, including metal parts that require corrosion protection, mechanical durability, and weather resistance.
Application Parameters
| Parameter | Recommended Setting |
|---|---|
| Curing Temperature | 180–200°C |
| Curing Time | 10–15 minutes |
| Spraying Method | High-voltage electrostatic spraying |
| Spraying Voltage | 60–80 kV |
| Recommended Film Thickness | 60–150 μm |
Curing time and temperature should be determined according to the actual part temperature and the coating manufacturer’s specified curing conditions.
Physical Properties
| Test Item | Test Equipment | Reported Requirement / Result | Test Standard |
|---|---|---|---|
| Pencil Hardness | Pencil hardness tester | A–1H | GB/T 6739; ASTM D3363 |
| Impact Resistance | Impact tester | Reported values: 50 kg·cm (8 mm diameter); 2.5 Nm (16 mm diameter) | GB/T 1732; ASTM D2794; ISO 6272 |
| Bending Resistance | Bending tester | Reported value: ≤2 mm cylindrical shaft test | GB/T 6742; ASTM D1737; ISO 1519 |
| Adhesion | Cross-cut adhesion tester | Grade 0 | GB/T 9286; ISO 2409; ASTM D3359 |
| Cupping | Cupping tester | ≥6 mm, as reported | GB/T 9753; ISO 1520 |
| Salt Spray Resistance | NSS salt spray chamber | ≥600 hours; reported scribe creep criterion: ≤2 mm | GB/T 1771; ASTM B117; ISO 7253 |
| Humidity Resistance | Constant temperature and humidity chamber | ≥1000 hours; slight gloss loss reported | GB/T 1740; ISO 6270 |
| Weather Resistance | Accelerated weathering chamber | QUV-B313, 500 hours; reported rating: level 3 | GB/T 1865; ISO 11341 |
| Motor Oil Resistance | L-E10# motor oil immersion | No visible surface change after 24 hours of immersion, as reported | GB/T 1734 |
| Stone Impact Resistance | Stone impact tester | W3, as reported | SAE J400 |
Test specimens are prepared from 0.8 mm cold-rolled steel plates that have been degreased and derusted, with a reported coating thickness of 60–80 μm. Results may vary with gloss, substrate preparation, film thickness, curing conditions, and test environment.
Environmental Requirements
The product is specified to exclude listed heavy metals, including lead, cadmium, mercury, and hexavalent chromium, and is intended to meet applicable RoHS 2.0 requirements. Compliance should be confirmed against the relevant product documentation and customer requirements.
Technical Support & Customization
Coating recommendations can be tailored to the substrate, component geometry, application equipment, required film thickness, curing conditions, and target performance. Laboratory test results are provided for reference and do not guarantee identical performance under all field conditions.
Contact us with your frame or chassis application, substrate, coating requirements, and estimated order quantity to discuss MT-A400 series specifications and request a quotation.
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