Industrial Enameled Flat Wire Supplier - ISO9001 Certified with Wide Range of Thermal Classes

We typically keep a decent inventory of the more common thermal classes—around 180 and 200 are usually on the shelf, but if you need something like class 105 or 155 in a non-standard width ratio, it's usually a 20-day or so lead time, give or take a few days depending on the extrusion setup.

flat wire itself comes from drawn oxygen-free copper or electrcial aluminun rod, and what it does is create a tighter packing factor in transformer windings than round wire ever can, so you get better heat dissipation and smaller overall coil size. For most buyers, the 2.00 mm to 16.00 mm width range covers the bulk of motor and instrument appliction, but we’ve had some push for the 20:1 width-to-thickness ratio when they’re trying to squeeze every turn into a confined slot. The paint film insulation thickness is specified as Grade 1 or Grade 2, and honestly, the thicker coating (0.12-0.17 mm) is better for high-voltage scenarios where partial discharge is a concern—nobody wants to chase a breakdown in a big power transformer.

You’ll get a COA with every batch that covers the resistivity at 20°C—for copper it’s ≤0.017241 Ω·mm²/m, for aluminum it’s ≤0.02801 Ω·mm²/m, and our company can provide HPLC or TDS on the insulating varnish if your QA needs it for protocol validation.

It’s not suited for applications like motor windings in high-vibration environments where the wire sees repeated flexing—the enamel film can micro-crack under those conditions, and that’s just a fact of the flat geometry, so stick with round wire for that stuff.

Packing is on spools or coils (you’ll need to specify which), and we usually ship within 3-5 business days if it’s a stocked item, but for custom thicknesses like 0.80 mm on the narrow side, confirm that before ordering.