Kanthal af is ferritic iron-chromini-aluminium alloy (fecral alloy) yekushandisa pakupisa kusvika ku1300 ° C (2370 ° F). Iyo Alloy inoonekwa neakanakisa oxidation kuramba uye yakanaka kwazvo fomu kugadzikana kukonzera murefuhupenyu hwepamoyo.Chaizvoizvo Zvikumbiro zveKanthal AF zvakaita seMagetsi ekupisa zvinhu mumidziyo yeindasitiri