I-Saky steel Martensitic insimbi engagqwali iwuhlobo lwensimbi engagqwali ye-chromium egcina i-martensitic microstructure ekamelweni lokushisa, izakhiwo zayo ezingalungiswa ngokwelashwa kokushisa (ukucisha nokushisa). Ngokuvamile, iwuhlobo lwensimbi engagqwali eqinile. Ngemva kokucisha, ukushisisa kanye nenqubo yokuthungatha, Ukuqina kwensimbi engagqwali engu-440 buye kwathuthukiswa kakhulu kunokwezinye izinsimbi ezingenasici nezimelana nokushisa. Ivame ukusetshenziswa ekwenzeni amathuluzi okuthwala, ukusika, noma isikhunta sepulasitiki esidinga imithwalo ephezulu kanye nokumelana nokugqoka ngaphansi kwezimo ezigqwalayo. I-American standard 440 series steel stainless steel okuhlanganisa: 440A, 440B, 440C, 440F. Okuqukethwe kwekhabhoni okungu-440A, 440B kanye no-440C kukhuphuke ngokulandelana. I-440F (ASTM A582) iwuhlobo lwensimbi yokusika yamahhala enokuqukethwe kuka-S okungezwe ngesisekelo se-440C.
Amabanga Alinganayo E-440 SS
| American | I-ASTM | 440A | 440B | 440C | 440F |
| I-UNS | I-S44002 | I-S44003 | S44004 | I-S44020 | |
| IsiJapane | I-JIS | I-SUS 440A | I-SUS 440B | I-SUS 440C | I-SUS 440F |
| IsiJalimane | I-DIN | 1.4109 | 1.4122 | 1.4125 | / |
| China | GB | 7Kr17 | 8Kr17 | 11Kr17 9Cr18Mo | Y11Cr17 |
Ukwakhiwa Kwekhemikhali Kwe-440 SS
| Amabanga | 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) |
Qaphela: amanani kubakaki avunyelwe futhi awaphoqelekile.
Ukuqina Kwe-440 SS
| Amabanga | Ukuqina, i-Annealing (HB) | Ukwelashwa kokushisa (HRC) |
| 440A | ≤255 | ≥54 |
| 440B | ≤255 | ≥56 |
| 440C | ≤269 | ≥58 |
| 440F | ≤269 | ≥58 |
Ngokufanayo nensimbi evamile ye-alloy, i-Saky steel's 440 uchungechunge lwensimbi engagqwali i-Martensite inezici zokuqina ngokucisha, futhi ingathola inhlobonhlobo yezinto eziwumshini ngokwelashwa okuhlukile kokushisa. Ngokuvamile, i-440A inokusebenza okuhle kakhulu kokuqina kanye nobulukhuni obuphezulu, futhi ukuqina kwayo kungaphezu kwalokho kuka-440B no-440C. I-440B inobulukhuni obuphakeme nokuqina kuno-440A kanye no-440C we amathuluzi okusika, amathuluzi okulinganisa, amabheringi namavalvu. I-440C inokuqina okuphezulu kakhulu kwazo zonke insimbi engagqwali kanye nensimbi ekwazi ukumelana nokushisa yamathuluzi okusika ekhwalithi ephezulu, imibhobho namabheringi. I-440F iyinsimbi esika mahhala futhi isetshenziswa kakhulu kumalebula azenzakalelayo.
Isikhathi sokuthumela: Jul-07-2020