Uyini Umehluko We-440A, 440B, 440C, 440F?

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.

440A ishidi lensimbi engagqwali      440A ipuleti lensimbi engagqwali


Isikhathi sokuthumela: Jul-07-2020