Siyanisa pakati pe420 420J1 uye 420J2 Stainless simbi kuita maitiro:
Musiyano mukuru pakati pesimbi isina tsvina 420J1 uye 420J2
420J1 ine imwe dhigirii yekusapfeka uye kusagadzikana kwemarara, kuomarara kwakanyanya, uye mutengo wayo wakaderera wesimbi isina tsvina. Inokodzera nharaunda yekushanda inoda yakajairika simbi isina tsvina.
420J2 bhandi resimbi isina tsvina imhando yesimbi isina tsvina inogadzirwa maererano neAmerican ASTM zviyero; ChiJapan chiyero SUS420J2, chiyero chitsva chenyika 30Cr13, chiyero chekare chenyika 3Cr13, kodhi yedhijitari S42030, European standard 1.4028.
420J1 simbi isina tsvina: Mushure mekudzima, kuoma kwacho kwakakwira, uye kuramba kwecorrosion kwakanaka (magnetic). Mushure mekudzima, 420J2 simbi isina tsvina yakaoma kupfuura 420J1 simbi (magnetic).
Kazhinji, tembiricha yekudzima ye420J1 ndeye 980 ~ 1050 ℃. Kuoma kwe980 ℃ kupisa mafuta ekudzima kwakadzikira zvakanyanya pane 1050 ℃ kupisa mafuta ekudzima. Iko kuoma mushure me980 ℃ kudzima mafuta ndeye HRC45-50, uye kuoma mushure me1050 ℃ kudzima mafuta kuri 2HRC yakakwirira. Nekudaro, iyo microstructure yakawanikwa mushure mekudzima pa1050 ℃ yakaoma uye ine brittle. Zvinokurudzirwa kushandisa 1000 ℃ kudziyisa uye kudzima kuti uwane chimiro chiri nani uye kuoma.
Stainless Steel 420 / 420J1 / 420J2 Sheets & Plates Akaenzana Magiredhi:
| STANDARD | JIS | WERKSTOFF NR. | BS | AFNOR | SIS | UNS | AISI |
| SS 420 | SUS 420 | 1.4021 | 420S29 | - | 2303 | S42000 | 420 |
| SS 420J1 | SUS 420J1 | 1.4021 | 420S29 | Z20C13 | 2303 | S42010 | 420L |
| SS 420J2 | SUS 420J2 | 1.4028 | 420S37 | Z20C13 | 2304 | S42010 | 420M |
SS420 / 420J1/ 420J2 Sheets, Plates Chemical Composition (saky simbi):
| Giredhi | C | Mn | Si | P | S | Cr | Ni | Mo |
| SUS 420 | 0.15 max | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 12.0-14.0 | - | - |
| SUS 420J1 | 0.16-0.25 | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 12.0-14.0 | - | - |
| SUS 420J2 | 0.26-0.40 | 1.0 max | 1.0 max | 0.040 max | 0.030 max | 12.0-14.0 | - | - |
SS 420 420J1 420J2 Sheets, Plates Mechanical properties(saky steel):
| Giredhi | Tensile Simba Max | Goho Simba (0.2% Offset) Max | Elongation (mu2 mukati) |
| 420 | MPa - 650 | MPa - 450 | 10 % |
| 420J1 | MPa - 640 | MPa - 440 | 20% |
| 420J2 | MPa - 740 | MPa - 540 | 12% |
Kuomarara kwe420 akatevedzana simbi mushure mekupisa kupisa kunenge HRC52 ~ 55, uye kuita kwezvinhu zvakasiyana-siyana senge kukuvara kwekudzivirira hakuna kunyanya kunyanyo shamisa. Nokuti zviri nyore kucheka uye kupukuta, zvakakodzera kugadzirwa kwemapanga. 420 simbi isina tsvina inonziwo "kucheka giredhi" martensitic simbi. 420 yakatevedzana simbi ine yakanakisa ngura inodzivirira nekuda kweiyo yakaderera kabhoni yemukati (kabhoni yemukati: 0.16 ~ 0.25), saka isimbi yakanaka yekugadzira maturusi ekudhivha.
Nguva yekutumira: Chikunguru-07-2020