Answer
17-7PH ikoreshwa muburyo bubiri bwibanze buvurwa nubushyuhe bwimpeta. Imiterere CH900 ikubiyemo gukonjesha ibikoresho imbaraga nyinshi (Imiterere C) ikurikirwa no gukomera kwimyaka. Ibi bivamo imbaraga zishoboka zose zishoboka ($ 240 ksi $) ariko ihindagurika rito. RH950 ikubiyemo kuvura igisubizo, hagakurikiraho guhindura sub-zeru kuri martensite hanyuma ugasaza $ 950 ^ \ kuzenguruka F $. RH950 itanga ihame ryiza kandi rikomeye, nubwo imbaraga nkeya ugereranije na CH900. Kubintu byinshi bizenguruka impeta, CH900 nibisanzwe kuko uburyo bwo gutondekanya inyungu buva mumbaraga ndende yambere ya wire ikonje. Nyamara, kumpeta nini ya diametre aho kwishyiriraho bisaba kwaguka cyane utiriwe ufata, ubukana bwiyongereye bwa RH950 burashobora guhitamo gukumira kuvunika.
