AISI Standard yog dab tsi?

AISI thiab ASTM yog ob qho qauv kev lag luam hauv Asmeskas. Lawv cov chaw ua haujlwm sib txawv, tab sis lub ntsiab lus ntawm cov ntaub ntawv yog tib yam. AISI - Tus Qauv ntawm American Iron thiab Steel Institute, ASTM - Tus Qauv ntawm American Society for Testing and Materials.

Muaj ntau lwm cov qauv siv hauv Tebchaws Meskas, xws li ANSI American National Standards, ASME American Society of Mechanical Engineers, thiab lwm yam.

AISI txuj. Txhua qhov sib txawv acronyms.

Hom kev xaiv no qhia txog ntau hom hlau. Tab sis li cas? Los ntawm peb tus lej acronym thiab tej zaum yuav ib tsab ntawv ntxiv. Cov qib tsis kam yog txiav txim los ntawm thawj tus lej. Nov yog qee qhov piv txwv:

AISI-2XX - Chromium nickel manganese austenitic hlau

AISI-3XX - Austenitic chrome-nickel steel

AISI-4XX - Chrome Ferritic lossis Martensitic Steel

AISI-5XX - Nruab nrab Chrome Martensitic Steel

AISI-6XX - chrome nag lossis daus hardened steel.

Tshwj xeeb, yuav tsum muaj ob khub ntawm tus lej kom paub qhov txawv ntawm ib hom khoom. Txawm li cas los xij, daim npav qhia lwm yam ntaub ntawv, xws li

L=cov ntsiab lus tsis tshua muaj carbon (rau zoo weldability)

Ti=muaj cov titanium (ua kom tag nrho cov kev tiv thaiv corrosion ntawm welds ntawm tuab ntsiab)

F=muaj leej faj (paub rau machinability)

N=Muaj cov nitrogen yaj hauv cov hlau (kom muaj kev tiv thaiv ntau dua rau pitting thiab lwm yam paug).

Hlau series.

Raws li AISI kev faib tawm, cov hlau tuaj yeem muab faib ua ntau yam sib txawv.

Cov pa roj carbon steel (1000 series): plaub tus lej ntxiv rau ib qho ua ntej

npe 1:

Qhov thib ob: 0 (carbon steel), 1 (revulcanized carbon steel, 2 (revulcanized thiab rephosphated carbon steel)

Tus lej thib peb thiab thib plaub: cov ntsiab lus carbon * 100.

Cov hlau tsis tshua muaj hlau: plaub tus lej

Tus lej thib ib thiab tus lej thib ob: kev txheeb xyuas series

Ob tug lej kawg: txheeb xyuas cov ntsiab lus carbon * 100.

siab alloy steel

200 series (chromium manganese austenitic hlau)

Series 300 (chromium-nickel austenitic steels)

Series 400 (ferritic lossis martensitic steels).

Stainless hlau thiab AISI nomenclature.

Raws li koj paub, muaj ntau hom hlau, yuav luag ib txwm paub los ntawm AISI steel cim. Cov tom kawg yog feem ntau (tsis ncaj ncees lawm) suav tias yog "lub ntsiab lus" rau "stainless steel". Yog li, stainless hlau yog qhov txawv ntawm qhov feem pua ​​​​ntawm qhov hnyav ntawm cov khoom siv alloying. Feem ntau yog dab tsi?

304 - Chrome (18 feem pua) Nickel (10 feem pua) Carbon (0.05 feem pua)

304 L - (tsawg carbon): Cr (18%) Ni (10%) C (<>

316 - Chromium (16 feem pua) Nickel (11.3/13 feem pua) Molybdenum (2/3 feem pua)

316 L - (tsawg carbon): Cr (16.5/18.5%) Ni (10.5/13.5%) Mo (2/2.25%) C (<>

316 LN - (Low Carbon Nitrogen) (Nrog nitrogen yaj nyob rau hauv cov khoom siv lead ua lattice)

316 LN ESR (electroslag remelting)

430: Chromium (16/18%) C (0.08%).

Carbon thiab Alloy Steels: AISI yog siv los txheeb xyuas qee cov qauv ntawm cov pa roj carbon thiab hlau alloy steel tuav, billets, billets, slabs thiab tuav nrog cov kev txwv tshwj xeeb thiab txwv ntawm ladle chemistry (piv txwv li, AISI 1040 steel). Txawm li cas los xij, AISI tsis cuam tshuam ncaj qha rau hauv kev txhim kho thiab / lossis kev saib xyuas cov qauv hlau. Lub koom haum ntawm Hlau thiab Hlau Technology ua cov haujlwm no, thiab AIST cov ntawv tshaj tawm "Pocket Handbook of Standard Forged Steels" muab cov ntaub ntawv tshiab kawg.

Stainless Hlau: AISI tsis koom nrog hauv kev txhim kho thiab / lossis kev saib xyuas ntawm cov khoom siv hlau stainless. Yog xav paub ntxiv txog cov khoom no, hu rau Specialty Steel Industries North America (SSINA).