What is ED Coating?

What is ED Coating?

ED Coating is known by many names like Electrodeposition, Electropheretic, Electrophoresis Coating, Cationic E-Coat and Cathodic Electro Deposition just to name a few. It is an organic coating method that uses electrical current to deposit paint onto a part or assembled product. Because of its ability to coat even the most complex parts and assembled products with specific performance requirements, ED Coating is used throughout industry as a means to coat products in various categories such as: automobiles, automotive parts, transformers, metal office furniture, home appliances, fixtures and much more.

Why ED Coating?

Finishers choose ED Coating to provide their products with a durable, lasting coating and because ED Coating can be used as a primer, top coat or both, and also with other types of coatings, the versatility is endless.

ED Coating Process

This is a process where water based paint consisting of Pigment, Resin and Solvent is electroplated or coated on either ferrous or non-ferrous surface. This is usually found in automobile body parts as a prime coat before spray painting. With features like high throwing power; evenness in coating thickness and high corrosion resistant, it had already taken over many other processes such as epoxy powder painting, wet paint spraying and zinc electroplating.

  • Excellent Coverage of Complex Configurations With Recessed Areas
  • Internal Coverage For Parts With Crevices
  • Uniform Film Thickness
  • Controllable Consistent Film Build
  • Benchmark Corrosion Protection
  • Compatible with other Coating Technology
  • Capability to Coat Aluminum and Zinc Die-Cast, Steel, Galvanized Steel and Other Metals

Environmental Advantages

  • No Lead
  • No Chrome
  • Low to No HAPs (Hazardous Air Pollutant)
  • Ultralow VOC (Volatile Organic Compound)
  • Heavy Metal Free Formulations • OSHA Compliance
  • EPA Compliance
  • REACH Compliance
  • RoHS/SOC Compliance
  • SVHC Compliance
  • PFOA/PFOS Compliance

Properties of ED Film


10 ~ 35 microns (µm)
Pencil Hardness 2H ~ 3H     (Mitsubishi - Uni)
Salt Spray(Zinc Phosphate Treated) 1,000 hours (5% Nacl, 35o C)
Adhesion 100/ 100 (1mm Square)
Brightness 15 ~ 65 ( 60 )
Impact Test 50 cm PASS (1/2 in dia x 500gm)
Alkali Resistance Above 240 hours (0.1N NaoH)
Acid Resistance Above 48 hours (0.1N H2SO4)
Composite Corrosion Test 100 cycle (SST 2 hours,Dry 60o C 2 hours, wet 50o C, 95% RH, 4 hrs)  
Filiform Rust Resistance 1.0 mm ~ 1.5mm (SST 24 hrs, 40o C x 85%   RH, 480 hrs)

Conforming To

  • ISO 2812-1
  • ISO 2812-2
  • ISO 2409 / JIS K 5600-5-6
  • ISO 4628-1 / JIS K 5600-8-1
  • ISO 4628-2 / JIS K 5600-8-2
  • ISO 6272-2
  • ISO 9227
  • ISO 15184 / JIS K 5600-5-4
  • and others