Where Our Coatings Are Used
Use Cases
Charging Connector and Cable Hardware
Connector housings, latch hardware, contact pins and sockets, strain relief, cable retraction hardware, and the high-cycle mating components inside SAE J1772, CCS, and NACS connectors.
Pedestal and Mounting Hardware
Anchor bolts, base plates, support brackets, post hardware, sign and signage mount hardware, and the structural fasteners that have to hold up through a decade of weather and parking-lot service.
Enclosure and Cabinet Components
Cabinet sheet metal, doors, hinges, latches, panel mounting hardware, and vent components that have to maintain NEMA and IP enclosure ratings against weather, dust, and tampering.
Power Electronics and Bus Bar Hardware
Internal bus bars, terminal lugs, conduit fittings, breaker mounts, and panel hardware that carry the high DC currents that 150 kW, 350 kW, and faster chargers require.
Cooling System Components
Coolant line brackets, heat exchanger mounts, pump and fan hardware for the liquid-cooled cable assemblies and power electronics inside modern DC fast chargers.
What These Finishes Do
Key Benefits
Severe Outdoor Corrosion Resistance
Protection against full-weather exposure, freeze-thaw cycling, road salt, and the coastal environments that public charging deployments increasingly include.
High-Current Electrical Conductivity
Low and stable contact resistance on connector contacts, bus bars, and lugs where hundreds of amps move through the system every charging cycle.
Wear Resistance for Mating Cycles
Plating engineered for the thousands of plug-in/plug-out cycles a public charger sees over its service life, without contact-resistance drift or visible wear.
NEMA and IP Enclosure Compatibility
Finishes that support the sealing surfaces and gasket interfaces required for NEMA 3R, 4, and IP44+ enclosure ratings that public chargers are built to.
Galvanic Compatibility
Process selection that avoids dissimilar-metal corrosion across the steel, aluminum, copper, and stainless components that make up a modern charging station.
Environmental Compliance
Trivalent chromium passivation and fully hexavalent-chromium-free chemistries that match the sustainability values driving EV infrastructure investment.
Protective Coatings for EV Charging Stations
EV charging stations live the hard life. They sit outside in highway rest stops, grocery store parking lots, coastal travel plazas, and apartment complexes — in full sun, freezing winters, road-salt slush, and tropical humidity. They get plugged in and unplugged tens of thousands of times. They move hundreds of amps through cables and contacts on every fast-charging cycle. And they’re expected to do all of it reliably for ten years or more. The plating on every part of that system is what makes that reliability possible.
CMC supplies the protective finishes that EV infrastructure manufacturers specify when severe outdoor service, high-current performance, and long mating-cycle life all have to hold together. Our menu covers what the industry actually runs: zinc-nickel for pedestal hardware, anchor bolts, and exterior cabinet components that face the full weather envelope; tin for the bus bars, lugs, and internal power-electronics hardware that carry charging current; electroless nickel for connector internals and precision parts that demand uniform thickness across complex geometry; and zinc for the structural and interior hardware that ties it all together. Every chemistry is trivalent chromium passivated and fully hexavalent-chromium-free.
Across four facilities and 17 processing lines, we have the volume to scale with the EV infrastructure build-out and the engineering depth to recommend the right finish before a sample ever goes on a line. Send us a print or a part description and we’ll match the right process to the service environment, the duty cycle, and the spec your program runs to.
Finishes we most often recommend for EV charging infrastructure
Building a charger that has to live outside?
Send us a drawing, a specification, or a part description. We’ll recommend the right finish for the connector, the pedestal, the enclosure, and the power electronics inside, scoped to the volume and the spec your program runs to.