Chemical zog ntawm stainless hlau 321 phaj
Gnee Steel
Chemical zog ntawm stainless hlau 321 phaj
321 stainless hlau phaj yog titanium-stabilized austenitic alloy (18/8) paub rau nws zoo heev - kub lub zog, oxidation tsis kam, thiab corrosion kuj, tshwj xeeb tshaj yog zoo nyob rau hauv siab - kub ib puag ncig (800{13}}1500℃F). Qhov no yog vim lub ntsiab titanium tiv thaiv carbide nag lossis daus. Nws cov khoom tseem ceeb suav nrog 17-19% chromium, 9-12% npib tsib xee, thiab tsawg kawg tsib zaug ntawm cov pa roj carbon thiab nitrogen cov ntsiab lus hauv titanium. Nws zoo ib yam li 304 stainless hlau tab sis muaj kev ua tau zoo tshaj plaws hauv kev siv kub-kub, ua rau nws zoo tagnrho rau kev siv tshuaj lom neeg, aerospace, thiab tso pa tawm.
Gnee steel
Puas yuav 321 stainless hlau xeb?
Corrosion Resistance
Annealed Carpenter 321 stainless hlau yog resistant rau atmospheric corrosion, zaub mov corrosion, tshuaj tua kab mob corrosion, corrosion los ntawm ntau yam organic tshuaj thiab dyes, thiab corrosion los ntawm ntau yam inorganic tshuaj. Nws pom zoo ua haujlwm zoo rau intergranular corrosion.
Stainless hlau muaj tsawg kawg yog 10.5% chromium, tsawg dua 1.2% carbon, thiab lwm yam alloying ntsiab.
Qib 321 yog ib qho yooj yim austenitic 18/8 stainless hlau, zoo ib yam li 304, tab sis stabilized nrog ntxiv ntawm titanium. 321 stainless hlau los xij tiv thaiv kev tsim ntawm chromium carbides los ntawm kev sib ntxiv ntawm titanium. Qhov zoo ntawm 321 stainless hlau yog tias nws tsis raug cuam tshuam los ntawm kev sib tsoo tom qab cua sov hauv qhov kub ntawm cov carbide nag lossis daus ntawm 425℃txog 850 degree.
Zoo li lwm yam austenitic stainless hlau, 321 stainless hlau muaj zoo heev formability thiab weldability, thiab yog yooj yim khoov los yog dov rau hauv cov duab. Tsis muaj kev kho annealing yog yuav tsum tau tom qab vuam . 321 stainless hlau kuj qhia tau hais tias tsis tshua muaj siab toughness txawm nyob rau ntawm qhov kub thiab txias. Txawm li cas los xij, vim tias nws tsis tuaj yeem polished, nws tsis haum rau cov ntawv thov zoo nkauj.
Chemical Properties of 321 Phaj
| Element | % ntawm chemical |
| Chromium (C) | 17.00 Nws. max 19.00 Nws |
| Nickel (Ni) | 9.00 Nws. max 12.00 Nws. |
| Cov pa roj carbon (C) | 0.08 |
| Manganese (Mn) | 2.00 |
| Phosphorus (P) | 0.045 |
| Sulfur (S) | 0.03 |
| Silicon (Si) | 0.75 |
| Titanium (Ti) | 5 x (C + N) min. mus 0.70 max |
| Nitrogen (N) | 0.10 |
| Hlau (Fe) | Tshuav |
Mechanical zog ntawm 321 stainless hlau phaj
| Khoom | Qhov xwm txheej / kub | Tus nqi / Ntau Yam (Metric - SI Units) | Tus nqi / Ntau Yam (Imperial Units) | Reference Standard for Test Method |
|---|---|---|---|---|
| Tensile zog | Annealed | 520 - 750 MPa | 75 - 109 tsi | ASTM E8 |
| Yield zog (0.2% offset) | Annealed | 205 - 310 MPa | 30 - 45 tsi | ASTM E8 |
| Elongation | Annealed | 40% min | 40% min | ASTM E8 |
| Hardness (Rockwell B) | Annealed | 70 - 90 HRB | 70 - 90 HRB | ASTM E18 |
| Impact Strength (Charpy) | -20 degree | 40 J | 30 ft -lbf | ASTM E23 |
Hais txog 321 Stainless Hlau Phaj
321 alloy stainless hlau daim hlau muab zoo tag nrho corrosion kuj piv rau 304 stainless hlau. Nws yog qhov tshwj xeeb tshaj yog haum rau chromium carbide nag lossis daus kub ntawm 1800 txog 1500 degrees Fahrenheit (427 txog 816 degrees Celsius), qhov uas tsis yog -stabilized alloys xws li 304 raug cuam tshuam rau intergranular corrosion.
Ntawm qhov kub siab, cov hlau no tuaj yeem siv nrog feem ntau cov organic acids diluted, nrog rau cov organic acids ntshiab, phosphoric acid ntawm qhov kub thiab txias, thiab dilute cov kev daws teeb meem txog li 10% concentration ntawm qhov kub siab . 321 stainless hlau tiv thaiv polythionic acid kev nyuaj siab corrosion cracking hauv hydrocarbon ua.
Vim nws cov khoom siv zoo, 321 stainless hlau daim hlau kuj tsim nyog rau siab -kev siv kub. 321 alloy stainless hlau daim hlau muaj kev nkag siab zoo dua thiab kev ntxhov siab ntau dua li 304 thiab 304L, thiab yog li ntawd yuav tsum tau siv rau hauv cov ntawv thov qhov twg rhiab heev thiab intergranular corrosion yog ib qho kev txhawj xeeb. Qib 321 daim hlau yog cov khoom siv zoo tshaj plaws rau cov ntawv thov txog li 900 degree, muab kev tiv thaiv rau kev ntsuas, ua ke nrog lub zog siab, theem kev ruaj ntseg, thiab tsis kam mus rau tom qab aqueous corrosion. Ntawm qhov kub thiab txias, nws tuaj yeem siv rau hauv cov tshuaj caustic tsis muaj chlorides lossis fluorides. Tshwj tsis yog qhov tsis tshua muaj siab, 321 alloy stainless hlau daim hlau tsis ua haujlwm zoo hauv cov tshuaj chloride lossis sulfuric acid.
Gnee Steel tshwj xeeb hauv kev tsim khoom ntawm ntau yam khoom siv stainless hlau. Gnee Steel cov khoom ntim khoom suav nrog: Hlau Strapping: Cov kav dej nrog ib txoj kab uas hla ntawm 3 ntiv tes los yog tsawg dua yog feem ntau khi ua ke nrog polypropylene zaj duab xis los tiv thaiv xeb thaum thauj dej hiav txwv, thiab tom qab ntawd khi nrog cov hlua hlau. Ntoo Cases / Crates: Cov kav dej feem ntau yog ntim rau hauv cov rooj ntoo lossis cov thawv los tiv thaiv cov kav dej thaum lub sij hawm thauj mus los, tshwj xeeb tshaj yog cov uas ntev dua los yog muaj qhov loj dua. Seaworthy Export Ntim: Cov neeg muag khoom feem ntau siv cov txheej txheem seaworthy export ntim, uas tuaj yeem suav nrog ntau yam khoom siv thiab cov txheej txheem los tiv thaiv cov kav dej thaum thauj. Tarpaulin Ntim: Qhov no tiv thaiv los nag, dej hiav txwv, thiab lwm yam sab nraud los ntawm kev nkag mus rau lub thawv xa khoom thaum thauj. Gnee Steel tshwj xeeb hauv kev tsim thiab muag cov ntaub ntawv alloy. Gnee Steel cov khoom siv dav siv hauv aerospace, tshuaj, hluav taws xob, tsheb, thiab hluav taws xob nuclear, thiab peb tuaj yeem muab cov khoom siv alloy customized raws li cov neeg siv khoom xav tau. Rau cov khoom siv alloy pricing lossis customized alloy cov ntaub ntawv daws teeb meem, thov hu rau peb rau ib qho kev tsocai:ru@gneesteelgroup.com