alloy 304
Alloy 304 a T-300 series stainless hlau austenitic, uas muaj tsawg kawg yog 18 feem pua chromium thiab 8 feem pua nickel. Hom 304 muaj qhov siab tshaj plaws carbon ntawm 0.07 feem pua. Nws yog tus qauv "18/8 stainless" uas feem ntau pom nyob rau hauv cov lauj kaub thiab cov cuab yeej ua noj. Alloy 304 yog cov khoom siv ntau yam thiab siv dav hauv tsev neeg stainless hlau. Qhov zoo tshaj plaws rau ntau yam kev siv hauv tsev thiab kev lag luam, Alloy 304 nthuav tawm zoo heev corrosion kuj thiab muaj kev yooj yim ntawm fabrication, zoo formability. Cov austenitic stainless hlau tseem suav hais tias yog qhov feem ntau weldable ntawm high-alloy steels thiab tuaj yeem welded los ntawm tag nrho cov fusion thiab tsis kam vuam txheej txheem.
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Alloy 304 a T-300 seriesstainless hlauaustenitic, uas muaj tsawg kawg yog 18 feem pua chromium thiab 8 feem pua nickel. Hom 304 muaj qhov siab tshaj plaws carbon ntawm 0.07 feem pua. Nws yog tus qauv "18/8 stainless" uas feem ntau pom nyob rau hauv cov lauj kaub thiab cov cuab yeej ua noj. Alloy 304 yog cov khoom siv ntau yam thiab siv dav hauv tsev neeg stainless hlau. Qhov zoo tshaj plaws rau ntau yam kev siv hauv tsev thiab kev lag luam, Alloy 304 nthuav tawm zoo heev corrosion kuj thiab muaj kev yooj yim ntawm fabrication, zoo formability. Cov austenitic stainless hlau tseem suav hais tias yog qhov feem ntau weldable ntawm high-alloy steels thiab tuaj yeem welded los ntawm tag nrho cov fusion thiab tsis kam vuam txheej txheem.
Alloy 304 muaj kev tiv thaiv zoo rau atmospheric corrosion, khoom noj khoom haus thiab dej haus thiab rau ntau cov organic thiab inorganic tshuaj nyob rau hauv nruab nrab oxidizing rau nruab nrab txo ib puag ncig. Cov ntsiab lus chromium siab ntawm cov hlau muab kev tiv thaiv rau oxidizing kev daws teeb meem xws li nitric acid txog li 55 feem pua qhov hnyav thiab mus txog 176 degree F (80 degree).
Alloy 304 kuj tiv taus cov organic acids xws li acetic. Cov npib tsib xee tam sim no nyob rau hauv cov hlau muab kev tiv thaiv kom txo qis kev daws teeb meem xws li ntshiab phosphoric acid, txawm li cas los xij, hauv cov kev daws txias thiab txog li 10 feem pua ntawm cov tshuaj kub kub. Cov hlau tseem tuaj yeem ua haujlwm tau zoo hauv cov tshuaj caustic tsis muaj chlorides lossis fluorides ntawm qhov kub nruab nrab.
Alloy 304/304H tsis ua haujlwm zoo nyob rau hauv ntau qhov chaw txo qis xws li cov chlorides thiab sulfuric acid.
Chemical Composition (%) ntawm 304 Stainless Hlau Phaj
| Chromium | Nickel | Cov pa roj carbon | Manganese | Phosphorus | Sulfer | Silicon | Nitrogen |
| 18.0 feeb.-20.0 max. | 8.0 feeb.-10.5 max. | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 0.10 |
Mechanical Properties ntawm 304 Stainless Hlau Phaj
| Tensile zog min | Yield Strengtd min | Elongation min | Hardness max |
| 7 5 ksg | 30 ksg | 40 feem pua | 95 PAB |
304 Stainless Hlau Phaj
304 Stainless Phaj, feem ntau siv los ntawm cov hlau tsis muaj steel thiab kub tiv taus. 304 stainless hlau phaj muaj kev tiv thaiv corrosion zoo rau ntau cov tshuaj corrodents nrog rau cov chaw ua haujlwm thiab cov chaw hauv dej hiav txwv Cov lus qhia tshwj xeeb rau 304 Phaj thiab 304L Stainless Hlau Phaj yog ASTM A-240, ASME SA -240 thiab A666.
304 Stainless Hlau Phaj muaj kev tsim tau zoo heev thiab tuaj yeem nkag tau yooj yim los ntawm txhua txoj hauv kev. 304/304L dual ntawv pov thawj
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