430 Stainless Hlau (UNS S43000): Kev Lag Luam Ua Haujlwm ntawm Ferritic Qib
Dec 04, 2025
Tso lus
1.
Hom 430 yog cov khoom siv ntau tshaj plaws ferritic stainless hlau thiab feem ntau hu ua kev lag luam ua haujlwm ntawm tsev neeg ferritic. Nws yog ib qho ncaj nraim -chromium qib tsim UNS S43000 nyob rau hauv Unified Numbering System, teev nyob rau hauv ASTM A240 rau phaj, ntawv thiab sawb, thiab them los ntawm EN 10088 raws li cov ntaub ntawv 1.4016 thiab los ntawm JIS G4303/G4304 li SUS430. Nws cov nominal muaj pes tsawg leeg ntawm 16.00-18.00% chromium, tsawg dua 0.12% carbon thiab tsis muaj npib tsib xee tseem ceeb ua rau nws sib nqus, muaj zog me ntsis, thiab tsis tshua kim tshaj austenitic qib xws li 304, uas muaj 8-10.5% nickel.
2. Tshuaj muaj pes tsawg leeg (ASTM A240)
Cov lus hauv qab no teev cov kev txwv tshwj xeeb rau Hom 430 rau ASTM A240. Hlau ua kom sib npaug.
| Element | Limit (wt%) |
|---|---|
| Cov pa roj carbon (C) | 0.12 max |
| Manganese (Mn) | max 1.00 Nws |
| Phosphorus (P) | 0.040 max |
| Sulfur (S) | 0.030 max |
| Silicon (Si) | max 1.00 Nws |
| Chromium (Cr) | 16.00-18.00 |
| Nickel (Ni) | 0.75 max |
| Nitrogen (N) | 0.10 max |
3. Mechanical Properties thiab Formability
Nyob rau hauv cov xwm txheej annealed, ASTM A240 yuav tsum muaj cov nram qab no yam tsawg kawg nkaus rau hom 430 phaj, ntawv thiab sawb.
| Khoom | Tus nqi |
|---|---|
| Tensile zog (annealed, min) | 415 MPa rau |
| Yield zog (0.2% offset, min) | 205 MPa |
| Elongation hauv 50 mm (min) | 20 % |
| Qhov ntom | 7.7 g / cm3 |
Hom 430 muaj ductility zoo heev thiab tuaj yeem nkag mus tob tob, khoov thiab spun, uas ua rau nws zoo tagnrho rau cov khoom tsim xws li lub dab dej dab dej thiab cov khoom siv vaj huam sib luag. Nws tsis tuaj yeem hardened los ntawm kev kho cua sov; lub zog tsuas yog nce los ntawm kev ua haujlwm txias. Nws qhov toughness qis dua li cov qib austenitic, thiab nws muaj kev tiv thaiv zoo rau kev ntxhov siab corrosion tawg, uas qib austenitic tsis sib koom.
4. Corrosion Resistance thiab nws txwv
Hauv qhov chaw qhuav hauv tsev lossis me me nyob deb nroog thiab nroog, 430 muaj kev tiv thaiv corrosion piv rau 304 rau ntau daim ntawv thov. Nws tiv taus nitric acid, organic acids thiab tshuaj lom neeg me me zoo. Nws qhov kev ua tau zoo sib txawv ntawm 304 nyob rau hauv ib puag ncig hnyav: nws muaj qhov tsis zoo rau pitting thiab crevice corrosion nyob rau hauv chloride-muaj cov chaw xws li ntug hiav txwv dej thiab de-icing ntsev raug. Nws tseem raug cuam tshuam rau intergranular corrosion yog rhuab ntawm 400 thiab 900 C, zoo li tshwm sim hauv vuam, vim chromium carbides tuaj yeem tsim ntawm cov ciam teb. Rau cov laj thawj no 430 tsis pom zoo rau kev tsim kho welded raug rau cov xov xwm corrosive, los yog siv rau sab nrauv hauv kev nyab xeeb ntawm ntug dej hiav txwv.
5. Daim ntawv thov thiab tsim kev taw qhia
Cov ntawv thov muaj xws li cov khoom siv sab hauv xws li qhov cub qhov rooj thiab lub tub yees vaj huam sib luag, automotive hniav moldings, chav ua noj splashbacks, dab dej, cutlery, fasteners, thiab ntau yam ntawm industrial thiab architectural Cheebtsam uas raug mob me me thiab tus nqi yog qhov tseem ceeb. Txhawm rau siv 430 ua tiav, cov neeg tsim qauv yuav tsum txwv tsis pub nws qhuav lossis ntub dej tsis tu ncua, tsis yog - chloride ib puag ncig, zam cov txheej txheem welded hauv kev pabcuam corrosive, thiab qhia qhov ua tiav ntawm qhov chaw (piv txwv li 2B, BA lossis txhuam) uas ua tau raws li qhov yuav tsum tau ua kom zoo nkauj. Qhov twg chloride tsis kam lossis welded corrosive kev pabcuam yog xav tau, xav txog kev kho dua tshiab rau 304, 316 lossis qib ferritic stabilized xws li 439.
Cov lus nug nquag
Vim li cas 430 pheej yig dua 304?Vim tias nws tsis muaj npib tsib xee, uas yog cov khoom siv kim tshaj plaws hauv cov qib austenitic. Qhov tsis muaj npib tsib xee kuj ua rau 430 sib nqus.
430 puas tuaj yeem hardened los ntawm kev kho cua sov?No. Hom 430 yog ferritic thiab tsis tuaj yeem hardened los ntawm quenching thiab tempering. Nws lub zog tsuas tuaj yeem nce los ntawm kev ua haujlwm txias.
Puas yog 430 haum rau kev siv sab nraum zoov?Feem ntau tsis muaj . 430 raug rau pitting thiab crevice corrosion nyob rau hauv chloride-laden ntug hiav txwv dej, thiab tsis pom zoo rau sab nrauv ntug dej hiav txwv kev pab cuam.
430 puas tuaj yeem welded?Nws tuaj yeem welded rau tsis yog - daim ntawv thov tseem ceeb nrog cov khoom siv hluav taws xob tsawg, tab sis vuam tuaj yeem ua rau cov qoob loo loj hlob hauv cov cua sov- thaj tsam cuam tshuam, txo cov tawv thiab corrosion kuj. Rau kev sib dhos tseem ceeb, siv qib ferritic ruaj khov lossis qib austenitic hloov.
Dab tsi yog cov qauv sib npaug ntawm 430?UNS S43000 hauv Asmeskas, cov khoom siv 1.4016 hauv EN 10088, SUS430 hauv JIS G4303 / G4304, thiab qib 10Cr17 hauv GB / T 3280 thiab GB / T 4237.
Puas yog 430 tiv thaiv kev ntxhov siab corrosion tawg?Yog lawm. Tsis zoo li qib austenitic, ferritic 430 muaj kev tiv thaiv zoo heev rau chloride kev nyuaj siab corrosion cracking, uas yog ib qho laj thawj uas nws yog siv rau hauv kub - dej thiab tshuaj me me.
Xa kev nug