Kanthal af waa bir-frimiium bir-chrominium-aluminium alfoy (fcral polioy) si loogu isticmaalo heerkulka illaa 1300 ° C (2370 ° F). Alloy waxaa lagu gartaa iska caabbinta aadka u fiican oo xasillooni aad u wanaagsan oo ka dhalatay muddo dheer nolosha ka timaada. Codsiyada caadiga ah ee Kanthal Af waa sida walxaha kululaynta korantada ee foornooyinka warshadaha