Amatafari agoramye arimo Al2O3 agera kuri 30% ~ 45%, kandi ingano ya silica iri munsi ya 78%. Amatafari agoramye arimo ibikoresho bigoramye bigoramye birwanya aside nke. Ibyuma bigoramye birwanya aside slag n'ibyuka bihumanya, ariko ubushobozi bwo kurwanya alkali ni buke. Ibyuma bigoramye birwanya ubushyuhe bifite imiterere myiza kandi birwanya ubushyuhe.
| Ibumba ry'umuriro rifite imiterere | |||
| Urutonde | 40 – 45% Alumina Fireclay Brick | 30 – 35% Alumina Fireclay Brick | |
| Ikintu | Ishami | 1600°C | 1500°C |
| Ubucucike bw'umubyimba | g/cm³ | 2.2 | 2.1 |
| Isura Igaragara | % | 22 | 24 |
| Modulus of Rupture | kg/cm² | 90 | 80 |
| Imbaraga zo Gukonja mu Bukonje | kg/cm² | 300 | 250 |
| Kwagura umurongo 1350°C | % | 0.2 | 0.2 |
| Ubushyuhe buri munsi y'umutwaro | °C | 1450 | 1300 |
Ibumba rito rigizwe n'amatafari rinini rikoreshwa cyane cyane mu gushyiramo ubushyuhe ku buso bushyushye cyangwa mu bindi bikoresho birwanya ubushyuhe, ibikoresho birwanya ubushyuhe cyangwa ibikoresho birwanya ubushyuhe by'inganda, nk'amatafari ya ethylene pyrolysis, amatafari y'imiyoboro, amatafari avugurura akomoka kuri amoniya y'ubukonje, moteri zitanga gazi n'amatafari ya shullte afite ubushyuhe bwinshi, n'ibindi.