I-ASTM i-ATTM i-A105 flames iqulethe i-carbon, manganese, phosfur, silicon, i-silicon, i-chokel, molybdenum, kunye ne-dadium kwi-dadium. Kuba ezinye izinto zingaphantsi kwe-1% yokwenziwa, ezi zixhobo zibizwa ngokuba yi-carbon steels. Kukho iintlobo ezahlukeneyo ezinjenge-SA105n floxees ezibonisiweyo zokuvala imibhobho. Iflethi ikwanazo iipropathi zamandla amahle. Elona xesha linesivuno se-flange liyi-250MPA kunye namandla amanye amanxuwa angama-485MPA. Lo mbandela unzima kakhulu, kunye nobunzima beBrinell ye-187.