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Magnesium Alloy·Anti-Corrosion Expert

Magnesium AlloyAnti-corrosion Coatings

KF-MT400 Magnesium Anti-Corrosion Coating

KF-MT400 magnesium alloy has high chemical activity and is highly prone to corrosion. It adopts a dual-layer protection system of dedicated sealing primer plus weather-resistant topcoat, with salt spray resistance of over 500h. Widely used for long-term anti-corrosion protection of drone frames/notebook lightweight structural parts/sports equipment.

500h+
Salt spray resistance
5B Grade
Adhesion grade
SealingPrimer
Isolates corrosive media
Dual-LayerProtection
Primer + topcoat system
<1.8g/cm³
Low coating density
ROHSCertifications
Eco compliance
4L pail
Standard packaging
SourceFactory
Lightweight solution
SourceFactory
Factory-direct quality

ProductsOverview

Magnesium alloy anti-corrosion coating is a heavy-duty anti-corrosion coating designed by KeXin New Material in accordance with ISO 12944 standards. Scientifically formulated with high-quality resins and high-performance anti-rust pigments, it offers excellent anti-corrosion performance and adhesion. It is widely used for protective coating in heavy-duty anti-corrosion fields such as steel structures, bridges, petrochemicals, and ships.

The product has passed rigorous salt spray testing (>1000h) and adhesion testing (>5MPa), and with a complete base-intermediate-topcoat system, it can provide long-lasting protection for 15-25 years. Kexin provides free coating design solutions and technical support services.

Why choose magnesium alloy anti-corrosion coating?

✓
Zinc content ≥80% · Double protection• Cathodic protection + barrier protection, salt spray >3000h
✓
C5-M, the highest corrosion rating.Verification in extreme environments such as cross-sea bridges and offshore platforms.
✓
On-site engineer guidance——Free on-site service in the Pearl River Delta region, remote technical support elsewhere
✓
Fast dispatch within 48 hours——Standard products well stocked; custom orders in 3-7 working days
✓
Complete coating system solutions——Primer / midcoat / topcoat systems designed as a matched set, one-stop procurement
✓
RoHS / REACH environmental compliance——Tested by third-party laboratories SGS/CTI, exported to 50+ countries

CoreAdvantages

Dedicated sealing anti-corrosion system for magnesium alloys

Magnesium alloy has a standard electrode potential of -2.37V, the lowest among commonly used metals, making it highly susceptible to galvanic corrosion. The dedicated sealing primer contains chromate replacement corrosion inhibitors and lamellar fillers to isolate corrosive ions (Cl-/SO42-). The topcoat provides weather resistance and decorative protection. Dual-layer protection with salt spray resistance >500h.

Lightweight design friendly

Magnesium alloy density is only 1.74g/cm³ (2/3 of aluminum alloy, 1/4 of steel). Coating system density<1.8g/cm³不会显著增加部件Weight。Suitable For无人机/笔记本电脑/电动工具等对轻量化有严格Requirements的Application Scenarios。

Aerospace-grade quality standards

The coating system has passed the aerospace industry's stringent salt spray resistance (ASTM B117/500h)/damp heat resistance/thermal shock resistance (-55°C to 120°C) tests. Suitable for anti-corrosion protection of aerospace-grade magnesium alloy components such as UAV frames/aerospace seat structural parts/satellite electronic equipment housings.

Professional coating technology support services

Kexin has an experienced coatings R&D and applications team that supports the whole process - substrate analysis, coating selection, optimisation of process parameters and on-site application guidance. Our engineers commission the coating parameters on your own production line so that finish quality and output are both optimised.

Eco-compliant green manufacturing system

All products are RoHS/REACH compliant and their VOC content meets national environmental standards. Waterborne and high-solids low-VOC formulations are continuously refined to keep pace with ever stricter environmental requirements. Environmental performance test reports issued by third-party authorities such as SGS and CTI are available on request.

Complete quality control and batch traceability

A quality-control system covering the whole process, from incoming raw materials to finished-goods dispatch. Every batch undergoes rigorous physico-chemical testing and simulated application trials. Batch numbers are traceable end to end, so raw-material sources and production data can be retrieved. Each shipment is released with a batch test report and a product warranty, so customers can use it with confidence.

TechnicalSpecifications

Basic parameters

Product typeDedicated sealing primer + topcoat system for magnesium alloys
Primer typeCorrosion inhibitor-containing epoxy sealing primer
Topcoat typeAcrylic / Polyurethane
Baking conditions60-80°C/20-30min
Gloss rangeHigh gloss / semi-gloss / matt
Suitable substratesMagnesium alloy/Magnesium-aluminum alloy/Magnesium-lithium alloy
Packaging Specs4 L / 20 L drum packaging
Shelf Life12 months

Performance

Salt spray resistance (ASTM B117)>500h no blistering or corrosion
Adhesion (cross-cut)5B
Pencil hardnessH-2H
Heat & Humidity Resistance(85°C/85%RH/500h)No blistering or peeling
Thermal Shock Resistance (100 cycles)-55°C to 120°C no cracking
Flexibility1mm
Coating density<1.8g/cm³
VOC content<420g/L

The technical parameters above are taken from test data of the Kexin New Materials laboratory (ISO 17025 accredited); actual values may differ slightly depending on application conditions and substrate. Please contact technical support to obtain a current COA test report.

Frequently AskedFAQ

Which substrates does it suit?+
Suitable for sandblasting and rust removal up to Sa2.5 grade on carbon steel and cast iron surfaces. The substrate must be free of oil, rust, and old paint; a roughness of Rz40-75μm is optimal.
Why can't it be left exposed?+
Epoxy is not UV-resistant and chalks under long exposure. It must be paired with an epoxy MIO intermediate coat and a weather-resistant topcoat to form a complete system.
Which primer or topcoat completes the system?+
We recommend using a matching primer and topcoat from the same Kexin series to secure system compatibility and best performance. A Kexin engineer can design a complete primer-midcoat-topcoat system for your specific service conditions, free of charge.
How to get samples and a quote?+
Free samples of standard products are provided (freight at the customer's cost), supplied with TDS and MSDS documentation. For bulk purchases please contact 400-901-0757 or 13531350189. Sample quantity from 1 kg; bulk orders from 20 kg.
How do I pick the right grade for my operating conditions?+
Choosing a coating product requires considering the substrate type, the service environment (temperature / humidity / chemical media), the required corrosion protection class (ISO 12944 C1-C5M), the application conditions and the budget. We recommend contacting our technical engineer on 400-901-0757 for professional selection advice; free trial spraying and test verification are supported.
What is the MOQ and lead time?+
Samples from 1 kg; regular products from 20 kg per batch. Stock items ship within 48 hours, made-to-order products in 3-7 working days. Door delivery can be arranged within the Pearl River Delta region.

ApplicationProcess

1

Surface preparation

Thoroughly clean the substrate surface to remove oil, oxide scale, and mold release agent. Sandblast metal substrates to Sa2.5 grade. Wipe plastic substrates with a specialized cleaner. Sand wood surfaces smooth and repair defects. Remove loose old coatings from existing substrates.

2

Priming / sealing

Select the appropriate primer or sealer based on the substrate and coating system. The primer enhances topcoat adhesion and seals substrate pores. Strictly mix according to the product ratio and control the film thickness to 10–15 μm. After baking or air drying, inspect the primer for defects before proceeding to the next process.

3

Topcoat / effect layer application

Apply 2-3 coats of topcoat via precision spraying or manual application. Ensure adequate flash-off between coats and control film thickness to 30-50μm. For artistic effect coatings, use specialized tools such as scrapers, trowels, or sponges to create texture and layering. For metallic flash paint, ensure uniform flash effect in the final coat.

4

Drying / curing

Bake at the temperature specified by the product requirements or allow to air-dry at room temperature until fully cured. The oven temperature uniformity should be ±5°C, with gradual heating to avoid coating defects. For UV coatings, pass through a UV curing machine at 800-1200 mJ/cm². After curing, allow natural cooling to room temperature before conducting performance testing.

5

Inspection / protection

After complete curing, test gloss/adhesion/hardness/color difference/chemical resistance. For artistic coatings, check the consistency of texture effects. Once all pass, protect with dust-free materials, package, and ship. Attach batch inspection report and quality certificate.

ApplicationsCases

镁合金无人机框架防腐

Anti-corrosion for magnesium alloy drone frames

Special anti-corrosion coating for magnesium alloy drone frames for lightweight long-term protection

镁合金笔记本电脑壳防腐

Anti-corrosion for magnesium alloy laptop shells

Anti-corrosion coating for magnesium alloy laptop casings, protecting lightweight structural components.

镁合金自行车架防腐

Anti-corrosion for magnesium alloy bicycle frames

Anti-corrosion coating for magnesium alloy road bike frames, safeguarding lightweight sports equipment.

镁合金相机外壳防腐

Anti-corrosion for magnesium alloy camera housings

Magnesium alloy professional camera housing with anti-corrosion coating, lightweight and high-rigidity protection

镁合金电动工具外壳防腐

Anti-corrosion for magnesium alloy power tool housings

Magnesium alloy power tool housing with anti-corrosion coating, lightweight industrial-grade protection

镁合金航空座椅防腐

Magnesium alloy aviation seat anti-corrosion

Magnesium alloy aviation seat structural component with anti-corrosion coating, aerospace-grade quality

镁合金高尔夫球杆防腐

Magnesium alloy golf club anti-corrosion

Anti-corrosion coating for magnesium alloy golf club heads, providing lightweight protection for sports gear.

镁合金医疗设备防腐

Magnesium alloy medical equipment anti-corrosion

Lightweight anti-corrosion coating for magnesium alloy medical imaging equipment casings

镁合金望远镜防腐

Magnesium alloy telescope anti-corrosion

Magnesium alloy telescope barrel with anti-corrosion coating, lightweight protection for optical equipment

镁合金汽车轮毂防腐

Magnesium alloy automotive wheel hub anti-corrosion

Magnesium alloy car wheel hub with anti-corrosion coating, lightweight high-performance sports car accessory

镁合金3C电子外壳防腐

Magnesium alloy 3C electronic housing anti-corrosion

Magnesium alloy 3C electronic product housing anti-corrosion coating lightweight consumer electronics

镁合金卫星部件防腐

Magnesium alloy satellite component anti-corrosion

Aerospace-grade lightweight anti-corrosion coating for magnesium alloy satellite electronic equipment housings

Technical documents MSDS (Material Safety Data Sheet) TDS Technical Data Sheet

Magnesium alloy anti-corrosion coating·Factory direct supply

KeXin New Material magnesium alloy anti-corrosion coating direct supply from source factory. Free sample testing, on-site guidance by technical engineers, ISO-certified quality assurance.

Free sample testing
On-site engineer guidance
Fast dispatch within 48 hours
ISO-certified factory · direct supply