Ubwoko 630, buzwi cyane nka 17-4, nibisanzwe PH idafite umwanda. Ubwoko bwa 630 nicyuma cya martensitike idafite ibyuma bitanga imbaraga zo kurwanya ruswa. Ni magnetique, byoroshye gusudira, kandi bifite ibimenyetso byiza byo guhimba, nubwo bizatakaza ubukana bwubushyuhe bwo hejuru. Azwiho kurwanya guhangana na stress-ruswa, kandi ikoreshwa mubikorwa bitandukanye byinganda nibikorwa birimo:
- Indangantego
- Ibikoresho byo mu murima wa peteroli
- Imashini
- Amashanyarazi
- Valve izunguruka
- Indege na gaz turbine
- Imashini za kirimbuzi
- Urusyo
- Ibikoresho byo gutunganya imiti
Kugirango igurishwe nkubwoko bwa 630 Ibyuma bitagira umwanda, bigomba kuba birimo imiti idasanzwe irimo:
- Cr 15-17.5%
- Ni 3-5%
- Mn 1%
- Si 1%
- P 0.040%
- S 0.03%
- Cu 3-5%
- Nb + Ta 0.15-0.45%
Igihe cyo kohereza: Ukwakira-09-2020