Saky steel Martensitic tšepe e sa hloekang ke mofuta oa tšepe e sa hloekang ea chromium e bolokang microstructure ea martensitic mocheso oa kamore, eo thepa ea eona e ka fetoloang ka ho phekola mocheso (ho tima le ho futhumatsa).Ka kakaretso, ke mofuta oa tšepe e sa hloekang e thata.Ka mor'a ho tima, ho halefa le mokhoa oa ho omisa, Ho thatafala ha tšepe e sa hloekang ea 440 e ntlafalitsoe haholo ho feta ea litšepe tse ling tse sa hloekang le tse thibelang mocheso.E atisa ho sebelisoa ha ho etsoa lithulusi tsa ho beha, ho itšeha, kapa liforomo tsa polasetiki tse hlokang meroalo e phahameng le ho hanyetsa tlas'a maemo a senyang.Maemo a Amerika a 440 letoto la litšepe tse sa hloekang ho kenyelletsa: 440A, 440B, 440C, 440F.Khabone ea 440A, 440B le 440C e ile ea eketseha ka ho latellana.440F (ASTM A582) ke mofuta oa tšepe ea ho itšeha mahala e nang le litaba tsa S tse kentsoeng motheong oa 440C.
Mephato e Tšoanang le ea 440 SS
| Moamerika | ASTM | 440A | 440B | 440C | 440F |
| UNS | S44002 | S44003 | S44004 | S44020 | |
| Sejapane | JIS | SUS 440A | SUS 440B | SUS 440C | SUS 440F |
| Sejeremane | DIN | 1.4109 | 1.4122 | 1.4125 | / |
| China | GB | 7Kr17 | 8Kr17 | 11Kr17 9Cr18Mo | Y11Cr17 |
Moetso oa Lik'hemik'hale oa 440 SS
| Mephato | C | Si | Mn | P | S | Cr | Mo | Cu | Ni |
| 440A | 0.6-0,75 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 | (≤0.5) | (≤0.5) |
| 440B | 0.75-0,95 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 | (≤0.5) | (≤0.5) |
| 440C | 0.95-1.2 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 16.0-18.0 | ≤0.75 | (≤0.5) | (≤0.5) |
| 440F | 0.95-1.2 | ≤1.00 | ≤1.25 | ≤0.06 | ≥0.15 | 16.0-18.0 | / | (≤0.6) | (≤0.5) |
Tlhokomeliso: litekanyetso tse ka har'a li-brackets lia lumelloa ebile ha lia tlameha.
Boima ba 440 SS
| Mephato | Thata, Annealing (HB) | Kalafo ea mocheso (HRC) |
| 440A | ≤255 | ≥54 |
| 440B | ≤255 | ≥56 |
| 440C | ≤269 | ≥58 |
| 440F | ≤269 | ≥58 |
Joalo ka tšepe e tloaelehileng ea alloy, Saky steel's 440 letoto la tšepe ea Martensite e na le litšobotsi tsa ho thatafala ka ho tima, 'me e ka fumana mefuta e mengata ea mochini ka kalafo e fapaneng ea mocheso.Ka kakaretso, 440A e na le ts'ebetso e ntle ea ho thatafatsa le boima bo phahameng, 'me boima ba eona bo phahame ho feta ba 440B le 440C.440B e na le boima bo phahameng le ho tiea ho feta 440A le 440C bakeng sa lisebelisoa tsa ho seha, lisebelisoa tsa ho lekanya, li-bearings le li-valve.440C e na le boima bo phahameng ka ho fetisisa ba tšepe e sa hloekang le tšepe e thibelang mocheso bakeng sa lisebelisoa tsa boleng bo phahameng ba ho itšeha, li-nozzles le libere.440F ke tšepe e sehang mahala, 'me e sebelisoa haholo ho lilathe tsa othomathike.
Nako ea poso: Jul-07-2020