Sobanura metallurgie ya 15-7 MO ibyuma bidafite ingese nibyiza byayo kumpeta iremereye cyane.

15-7 MO (PH 15-7 Mo) nicyuma cya austenitike yimvura-ikomera ibyuma bitagira umwanda. Mugusimbuza 2% ya Chromium muri 17-7PH na Molybdenum, igera ku mbaraga nyinshi no kurwanya neza koroshya ubushyuhe bwo hejuru. Muburyo bwa CH900, irashobora kugera kuri UTS ya MPa irenga 1700. Kugumana impeta, ibi bisobanurwa muburyo bushoboka bushoboka bwo gutwara imitwaro kuri buri gice cyubugari. Kurwanya 'gushiraho' hamwe n’umubare munini w’umunaniro bituma uhitamo guhitamo impeta ziremereye zigumana impeta mu bikoresho byo kugwa hamwe na silindari ya hydraulic y’umuvuduko mwinshi aho umwanya uri hejuru kandi ibidukikije bikaba byangirika byoroheje.