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What Is DELTATONE 9000 Surface Treatment for Custom Metal Products?
Based on the provided reference materials, DELTA-TONE 9000 is an inorganic zinc flake basecoat system used for surface treatment to provide highly effective anti-corrosion protection.
Here are its key characteristics and features:
Composition: It is an inorganic micro-layer zinc flake coating (zinc/aluminum flake basecoat) that combines with resins to form a highly corrosion-resistant film.
Safety & Compliance: It is completely free of harmful heavy metals such as chromium (Cr-III and Cr-VI), cadmium, and lead. It complies with the EU End-of-Life Vehicle Directive (ELV) and the Restriction of Hazardous Substances (RoHS) directive.
No Hydrogen Embrittlement: The application process does not cause hydrogen embrittlement, making it highly recommended for high-tensile fasteners and high-strength steel components.
Thermal Stability: The curing temperatures are relatively low (between 180°C and 240°C), meaning there is practically no risk of altering the metallurgy or structural properties of the base material.
DELTA-TONE 9000 provides superior corrosion resistance through multiple mechanisms:
Sacrificial Cathodic Protection: The zinc flakes act as a sacrificial anode to protect the underlying steel.
Barrier Effect: The overlapping zinc and aluminum flakes create a physical barrier against corrosive elements.
Self-Healing Effect: Zinc corrosion products can migrate into damaged areas to repair the coating.
Appearance: Provides a metallically bright silver finish.
Coating Thickness: Standard dry film thickness ranges from 5 to 10 µm, though it can be built up to 12 µm or more for enhanced protection.
Salt Spray Test (SST): Depending on the thickness and topcoat combination, it can withstand salt spray tests ranging from 480 hours up to 960 hours (e.g., 12 µm basecoat + 6 µm topcoat can reach 960h according to DIN EN ISO 9227).
Heat & Chemical Resistance: It can be used in areas exposed to heat up to 150°C and is resistant to organic solvents, oil, gasoline, and brake fluid.
Bimetallic Compatibility: Provides corrosion resistance when used on parts assembled with aluminum.
It is highly versatile and can be applied via dip-spin (for bulk parts like bolts, nuts, and small springs), dip-drain, or spray (for larger components like stampings, pressings, and chains) on jigs.
