EV charging stations are built mainly from metal and engineering plastics: powder-coated or galvanized steel, aluminum or stainless steel for cabinets and pedestals, UV-stabilized polycarbonate or similar plastics for fronts and covers, rubber or silicone seals, and a concrete foundation. The materials are chosen to meet durability ratings for water and dust (IP), impact (IK), corrosion and sunlight, which matter more to a site owner than the material name itself.
Key Takeaways
- Stations combine steel, aluminum, stainless steel, engineering plastics, seals and concrete.
- IP, IK, corrosion and UV ratings show whether materials suit the site.
- Steel housings face extra Buy America rules on funded US projects.
- Match materials to climate and traffic, not just price.
The Main Materials and Where They Are Used
| Material | Where it is used | Strengths | Trade-offs |
|---|---|---|---|
| Galvanized or powder-coated steel | DC cabinets, pedestals, bollards | Strong, impact resistant, cost-effective | Heavy; coating damage can lead to rust |
| Aluminum | Cabinets, heat sinks, lighter pedestals | Light, corrosion resistant, conducts heat | Softer than steel; dents more easily |
| Stainless steel | Coastal or harsh sites, fasteners | Best corrosion resistance | Higher cost |
| Polycarbonate and PC blends | Wallbox housings, fronts, display windows | Tough, flame-retardant grades, design freedom | Needs UV stabilization to avoid yellowing |
| Rubber, silicone and foam gaskets | Door and cable-entry seals | Keep water and dust out | Age with heat and UV; inspect during service |
| Reinforced concrete | Foundations and mounting pads | Stable base, anchors bolts | Must be designed for soil and frost |
Ratings That Tell You If the Materials Are Right
- IP rating: water and dust protection under IEC 60529; outdoor chargers commonly carry IP54 to IP66. See IP54, IP65 and IP66 compared.
- IK rating: impact resistance under IEC 62262, useful in public car parks where carts and bumpers hit equipment.
- Corrosion protection: coating type and salt-spray test results matter near the sea or where roads are salted.
- UV and temperature range: plastics must keep strength and colour through years of sun and cold; our cold-weather guide covers low temperatures.
Materials and Rules That Affect Cost
Material choice also has regulatory effects. Under the FHWA Buy America waiver for EV chargers, a charger housing that is predominantly steel or iron is excluded from the waiver and must meet the separate steel and iron requirements on federally funded US projects. Metal housings and pedestals can also fall under metal-specific import measures in some markets when shipped separately, so ask a licensed customs broker how they are classified. For buyers comparing mounting options, our guides to pedestal chargers and outdoor enclosures cover the practical side.
How to Choose for Your Site
- Indoor garage: a plastic wallbox with IP54 or better is usually enough.
- Open car park: IP65 or IP66, a good IK rating and a steel or aluminum pedestal with bollards.
- Coastal or salted roads: stainless fasteners and a proven coating system.
- High-traffic public site: replaceable front panels and cable management to reduce damage.
EVDANCE builds housings for outdoor duty, from the IP65/IP66 EV-ACT5006T wall charger to the IP54 EV-AC03201T floor-standing station. Our OEM program can adapt housing colour and branding for private-label projects.
Frequently Asked Questions
Are charging stations made of metal or plastic?
Both. Small AC wallboxes are often mostly plastic; DC cabinets and pedestals are usually steel or aluminum with plastic fronts.
Is aluminum better than steel for a charging station?
Aluminum is lighter and resists corrosion; steel is stronger against impact and usually cheaper. The site decides.
How long do charging station housings last?
It depends on climate, coating and maintenance. Inspect seals and coatings during routine service, and replace damaged parts early.
Related Reading
- IP Ratings for EV Chargers: IP54, IP65 and IP66 Compared
- What Is a Pedestal EV Charger?
- How to Install an EV Charger Pedestal: Step by Step
- Do You Need an EV Charger Enclosure?
