Qhov twg zoo dua: SS420 vs SS304?
SS420 vs SS304: Corrosion Resistance
SS420 Martensitic stainless hlau
- Zoo tiv thaiv me ntsis corrosion nyob rau hauv nruab nrab corrosive ib puag ncig.
- Tsis haum rau marine los yog acidic ib puag ncig.
- Tsawg corrosion resistant tshaj SS304, tshwj xeeb tshaj yog nyob rau hauv lub annealed mob.
SS304 Austenitic stainless hlau
- Zoo heev tsis kam mus rau ntau yam ntawm corrosive ib puag ncig.
- Superior tiv thaiv rau feem ntau oxidizing acids thiab chloride daws.
- Haum rau marine thiab corrosive ib puag ncig, outperforming SS420.
SS420 vs SS304: Mechanical Properties
Feem ntau, lub zog tensile ntawm 420 qib stainless hlau yog nyob ib ncig ntawm 586 MPa, uas yog siab, tab sis tsis siab npaum li.AISI 304 stainless hlau(621 MPa). Txawm li cas los xij, tom qab hardening thiab txo kev ntxhov siab, 420 qib stainless hlau tuaj yeem ncav cuag lub zog tensile ntawm 1,538 MPa, ze li peb npaug ntawm lub xeev annealed.
SIB 420:
| Khoom | Tus nqi |
|---|---|
| Tensile zog | 517-1538 MPa (75-223 ksi) |
| Yield zog | 275 MPa (40 ksi) |
| Hardness (Annealed) | 187 HB |
| Elongation | 20% |
alloy 304:
| Khoom | Tus nqi |
|---|---|
| Tensile zog | 505-730 MPa (73-106 ksi) |
| Yield zog | 215 MPa (31 ksi) |
| Hardness (Annealed) | 82 PAB |
| Elongation | 40% |
SS420 vs SS304: Daim ntawv thov
Qauv TSIS MUAJ: SS420
- Cutlery: Siab hardness thiab ntug tuav ua rau nws zoo tagnrho rau riam thiab txiav cov cuab yeej.
- Surgical Instruments: Siab hardness thiab nruab nrab corrosion kuj yog haum rau cov cuab yeej kho mob.
- Valves thiab Iav: Siab zog thiab hnav tsis kam yog qhov zoo rau cov khoom siv kho tshuab.
- Cov cuab yeej: Siv rau hauv cov cuab yeej uas xav tau lub zog siab thiab nruab nrab corrosion kuj.
SS304 UNS S30400:
- Cov Khoom Siv Ua Khoom Noj: Cov khoom siv tiv thaiv corrosion zoo heev thiab yooj yim ntawm kev ntxuav ua rau nws zoo tagnrho rau kev lag luam zaub mov thiab dej haus.
- Chemical Containers: Zoo tiv taus ntau yam tshuaj thiab cov kua qaub.
- Cov khoom siv hauv chav ua noj: Cov khoom siv tsis zoo thiab corrosion-resistant, siv rau hauv dab dej, countertops, thiab cov khoom siv.
- Daim ntawv thov kev tsim vaj tsev: Siv rau hauv lub tsev facades, railings, thiab cov khoom zoo nkauj vim nws cov formability thiab aesthetic thov.
