Answer
15-7 MO (PH 15-7 Mo) babban hazo ne mai taurin bakin karfe. Ta maye gurbin 2% na Chromium a cikin 17-7PH tare da Molybdenum, yana samun ƙarfi mafi girma da mafi kyawun juriya ga laushi a yanayin zafi mai tsayi. A cikin yanayin CH900, zai iya kaiwa UTS sama da 1700 MPa. Don riƙe zoben, wannan yana fassara zuwa mafi girman yuwuwar ƙarfin ɗaukar nauyi a kowace naúrar kauri. Juriyarsa ga 'saitin' da iyakar gajiyawarsa sun sa ya zama zaɓin da aka fi so don ɗorawa mai nauyi a cikin kayan saukarwa da manyan silinda mai ɗaukar nauyi inda sarari ke kan ƙima kuma yanayin yana da ɗan lalata.