Chromium Resistance Wire, 90ft Reel, 20 Gauge SWG – 19 AWG – 0.036″ Dia. Electrical resistivity at 20C ?. mm2/m - 1.25. Many industrial and hobby hot wire foam cutters also use chromium wire. Chromium wire is used because of its ability to withstand the high temperatures. byJuly 4, 2026