Piv nrog cov hlau zoo tib yam,hlau tshwj xeebmuaj zog dua thiab toughness, lub cev muaj zog, tshuaj muaj zog, biocompatibility thiab txheej txheem kev ua tau zoo. Tab sishlau tshwj xeebmuaj qee qhov txawv ntawm cov hlau zoo tib yam. Rau cov hlau zoo tib yam ntau tus neeg muaj kev nkag siab ntau dua, tab sis rau cov yam ntxwv ntawmhlau tshwj xeeb, ntau tus neeg hais ntau tsis meej pem. Yog li ntawd, cov lus hauv qab no tsom rau cov yam ntxwv ntawmcov hlau tshwj xeeb.
Cov yam ntxwv ntawm cov hlau tshwj xeeb:
Piv nrog cov hlau zoo tib yam,hlau tshwj xeebmuaj cov yam ntxwv ntawm siab purity, siab uniformity, ultra-zoo qauv thiab siab precision:
(1)Siab purity.Cov ntsiab lus ntawm cov pa roj thiab kev suav nrog (nrog rau cov hlau suav nrog cov ntsiab lus melting tsawg) hauv cov hlau tuaj yeem txo. Thaum lub purity ntawm steel yog nce mus rau ib qho kev txwv, tsis tsuas yog cov khoom qub ntawm cov hlau tuaj yeem txhim kho tau zoo, tab sis kuj muaj cov khoom tshiab ntawm cov hlau tuaj yeem tau txais txiaj ntsig. Piv txwv li, cov pa oxygen hauv cov kabmob steel yog txo los ntawm 30 × 10-6 mus rau 5 × 10-6, thiab cov kabmob lub neej tau nce 30 zaug. Universal austenitic stainless hlau yog tiv thaiv kev ntxhov siab corrosion thaum cov ntsiab lus phosphorus txo mus rau 3 × 10-6. Thaum kawg ntawm lub xyoo pua 20th, purity theem (10) ntawm cov hlau uas tuaj yeem ua tiav los ntawm cov khoom loj yog: hydrogen ≤1, oxygen ≤5, carbon ≤10, sulfur ≤10, nitrogen ≤15, phosphorus ≤25.

(2) High uniformity.Kev sib cais ntawm cov hlau ua rau cov qauv tsis sib xws thiab cov khoom ntawm cov hlau, uas yog ib qho ntawm cov laj thawj tseem ceeb rau kev ua tsis tiav ntawm cov hlau thaum ntxov thiab qhov nyuaj ntawm kev siv tag nrho cov peev txheej ntawm cov hlau. Cov cuab yeej siv niaj hnub no yuav tsum ua kom muaj qhov sib xws ntawm cov hlau ncav cuag: tsheb iav steel hardenability band fluctuation yog ± 3HRC; Cov ntsiab lus ntawm carbon, npib tsib xee, molybdenum ≤ ± 0.01%, thiab manganese thiab chromium ≤ ± 0.02% raug tswj kom meej. Qhov loj ntawm cov kabmob steel tom qab quenching yog kheej kheej thiab qhov hloov pauv loj yog 0.8 ± 0.2 μm. Cov khoom siv ntawm lub laminated tear resistant steel (Z-kev taw qhia steel) nyob rau hauv longitudinal, transverse thiab thickness, tshwj xeeb tshaj yog cov yas thiab toughness yuav tsum yog feem ntau zoo sib xws.
(3) Ultra-zoo qauv.Ultra-fine microstructure ntxiv dag zog rau lub zog tsuas yog kev txhawb zog nkaus xwb uas tuaj yeem ua kom lub zog ntawm cov hlau tsis muaj qhov txo qis lossis ua kom lub zog me ntsis. Piv txwv li, thaum lub grain loj ntawm siab zog stainless hlau AFC77 yog refined los ntawm 60μm mus rau 2.3 μm, lub pob txha toughness Kic nce los ntawm 100 mus rau 220MPa·m. Lub irradiated embrittlement kub ntawm coarse-grained steel phaj nyob rau hauv nuclear reactor siab hlab ntsha yog 150 ~ 250 ℃ thaum cov hlau nplua-grained yog 50 ~ 70 ℃. Thaum cov carbide loj nyob rau hauv bearing steel yog zoo rau ≤0.5μm, lub neej bearing yuav zoo heev.
(4) High precision. Cov hlau tshwj xeebyuav tsum muaj qhov zoo ntawm qhov zoo thiab nqaim dimensional tolerances. Qhov tseeb ntawm kub dov steel pas nrig yog mus txog ± 0.1 hli, lub thickness kam rau ua ntawm kub dov ntawv kauj yog mus txog ± 0.015 ~ 0.05 hli, thiab lub thickness kam rau ua ntawm txias dov ntawv kauj yog mus txog ± 0.003 hli.