Stainless hlau sulfur thiab phosphorus ntsiab
Cov ntsiab lus sulfur ntawm cov hlau yuav tsum tsis pub tshaj {{0}} 05%; Cov ntsiab lus phosphorus hauv cov hlau dav dav yuav tsum txwv tsawg dua 0.0%.
Yog li ntawd, cov ntsiab lus ntawm sulfur thiab phosphorus yog qhov tseem ceeb heev. Carbon structural steel thiab high-zoo carbon structural steel yog muab faib raws li nws: steel nrog sulfur thiab phosphorus cov ntsiab lus tsis pub tshaj 0.04% yog hu ua high-zoo steel; sulfur cov ntsiab lus tsis pub tshaj 0 03%. Hlau nrog cov ntsiab lus phosphorus tsis ntau tshaj 0.035% yog hu ua qib high-zoo steel; steel nrog sulfur thiab phosphorus cov ntsiab lus tsis ntau tshaj 0.025% yog hu ua super-zoo steel.
Cov qauv zoo nkauj stainless hlau
Feem ntau siv stainless hlau qauv feem ntau sawv cev los ntawm cov lej thiab cov cim. Muaj 200 series, 300 series, thiab 400 series. Nws yog sawv cev los ntawm cov cim cim ntxiv rau cov lej, xws li 1Cr18Ni9, 0Cr18Ni9, 00Cr18Ni9, 1Cr17, 3Cr13, 1Cr17Mn6Ni5N, thiab lwm yam, thiab cov lej qhia cov ntsiab lus sib thooj.
200 series: chromium-nickel-manganese austenitic stainless hlau
300 series: chromium-nickel austenitic stainless hlau
301: Zoo ductility, siv rau molding khoom. Kuj tseem tuaj yeem hardened los ntawm tshuab ceev. Zoo weldability. Hnav tsis kam thiab qaug zog yog zoo dua li 304 stainless hlau.
302: Qhov kev tiv thaiv corrosion yog tib yam li ntawm 304, thiab lub zog zoo dua vim muaj cov ntsiab lus ntawm cov pa roj carbon ntau.
302B: Nws yog cov hlau tsis muaj hlau nrog cov ntsiab lus silicon siab, uas muaj kev tiv thaiv siab kub oxidation.
303: Nws yog sharpened los ntawm kev ntxiv me me ntawm sulfur thiab phosphorus.
303Se: Nws kuj yog siv los ua qhov chaw uas yuav tsum tau kub taub hau, vim tias cov hlau tsis muaj steel no muaj kev ua haujlwm kub zoo nyob rau hauv cov xwm txheej zoo li no.
304: uas yog, 18/8 stainless hlau. Qib GB yog 0Cr18Ni9. 309: Piv nrog 304, nws muaj qhov kub thiab txias tsis kam.
304L: Nws yog qhov sib txawv ntawm 304 stainless hlau nrog cov ntsiab lus qis dua, siv rau qee lub sijhawm uas xav tau vuam. Cov ntsiab lus qis dua txo qis cov nag lossis daus ntawm carbides nyob rau hauv thaj chaw uas muaj kev kub ntxhov nyob ze ntawm qhov vuam, uas tuaj yeem ua rau muaj kev cuam tshuam ntawm intergranular corrosion (weld attack) hauv stainless hlau hauv qee qhov chaw.
304N: Nws yog cov hlau tsis muaj nitrogen, thiab nitrogen ntxiv kom muaj zog ntawm cov hlau.
305 thiab 384: Cov ntsiab lus nickel siab, qis ua haujlwm hardening tus nqi, haum rau ntau lub sijhawm uas yuav tsum tau ua kom txias txias.
308: Siv los ua vuam pas nrig.
309, 310, 314 thiab 330: Cov ntsiab lus ntawm npib tsib xee thiab chromium yog qhov siab, txhawm rau txhim kho oxidation tsis kam thiab creep lub zog ntawm hlau ntawm qhov kub thiab txias. 30S5 thiab 310S yog txawv ntawm 309 thiab 310 stainless hlau, qhov sib txawv yog tias cov ntsiab lus carbon tsawg dua, txhawm rau txo qis nag lossis daus ntawm carbides ze ntawm qhov vuam. 330 stainless hlau muaj qhov tshwj xeeb siab ua haujlwm rau carburization thiab thermal shock resistance.
316 thiab 317: muaj txhuas, yog li qhov kev tiv thaiv rau pitting corrosion nyob rau hauv marine thiab chemical industrial cheeb tsam yog zoo dua li 304 stainless hlau. Ntawm lawv, qhov sib txawv ntawm 316 stainless hlau muaj xws li cov pa roj carbon tsawg 316L, nitrogen-muaj zog stainless hlau 316N, thiab dawb-txiav stainless hlau 316F nrog cov ntsiab lus sulfur siab.
321, 347 thiab 348: yog stainless hlau stabilized nrog titanium, niobium ntxiv rau tantalum, thiab niobium feem, haum rau vuam Cheebtsam siv nyob rau hauv high kub. 348 yog stainless hlau haum rau kev lag luam hluav taws xob nuclear, uas muaj qee yam kev txwv ntawm kev sib xyaw ntawm tantalum thiab cobalt.
400 Series: Ferritic thiab Martensitic Stainless Steels
408: Cov cua kub zoo, tsis muaj zog corrosion, 11% Cr, 8% Ni
409: Tus qauv pheej yig tshaj plaws (British thiab Asmeskas), feem ntau yog siv los ua lub tsheb tso yeeb nkab, yog ferritic stainless hlau (chrome hlau)
410: Martensitic (high-strength chromium steel), zoo hnav tsis kam thiab tsis zoo corrosion kuj. 416: Qhov sib ntxiv ntawm sulfur txhim kho cov khoom ua haujlwm ntawm cov khoom.
420: "Knife qib" martensitic steel, zoo ib yam li cov hlau tsis muaj steel thaum ntxov xws li Brinell siab chromium steels. Kuj tseem siv rau riam phais, tuaj yeem ua kom ci ntsa iab heev
430: Ferritic stainless hlau, rau kho kom zoo nkauj, xws li rau tsheb accessories. Zoo formability, tab sis tsis zoo kub tsis kam thiab corrosion kuj
440: High-strength tej cuab yeej steel nrog me ntsis siab dua carbon ntsiab lus. Tom qab kev kho cua sov kom zoo, muaj zog ntau dua tuaj yeem tau txais, thiab qhov nyuaj tuaj yeem ncav cuag 58HRC. Nws yog ib qho nyuaj tshaj plaws stainless hlau. Qhov feem ntau siv piv txwv yog "razor blades". Muaj peb hom qauv siv: 440A, 440B, 440C, thiab 440F (yooj yim rau txheej txheem)
500 series: kub resistant chromium alloy hlau
600 series: martensitic nag lossis daus hardening stainless hlau
630: Feem ntau siv nag lossis daus hardening stainless hlau qauv, feem ntau kuj hu ua 17-4; 17% Cr, 4% Ni