Duplex stainless hlau

Duplex stainless hlau muaj cov yam ntxwv ntawm austenitic stainless hlau thiab ferritic stainless hlau vim tias nws muaj austenite + ferrite dual theem qauv thiab cov ntsiab lus ntawm ob theem qauv yog ib yam nkaus. Lub zog tawm los tuaj yeem ncav cuag 400Mpa ~ 550MPa, uas yog ob zaug ntawm cov hlau tsis zoo austenitic. Piv nrog rau ferritic stainless hlau, duplex stainless hlau muaj siab toughness, tsis tshua muaj nkig hloov kub, ho txhim kho intergranular corrosion kuj thiab vuam kev ua tau zoo; Thaum khaws qee cov yam ntxwv ntawm ferritic stainless hlau, xws li 475 ℃ brittleness, tshav kub High conductivity, me me linear expansion coefficient, superplasticity thiab magnetic zog. Piv nrog rau austenitic stainless hlau, duplex stainless hlau muaj lub zog ntau dua, tshwj xeeb tshaj yog lub zog tawm los tau zoo dua, thiab pitting corrosion kuj, kev nyuaj siab corrosion, corrosion fatigue tsis kam thiab lwm yam khoom kuj tau zoo tuaj.

Duplex stainless hlau tau muab faib ua plaub hom: Cr18, Cr23 (tsis suav Mo), Cr22 thiab Cr25 raws li lawv cov tshuaj muaj pes tsawg leeg. Raws li rau Cr25 duplex stainless hlau, nws tuaj yeem muab faib ua cov hlau zoo tib yam thiab super duplex stainless hlau. Ntawm lawv, Cr22 thiab Cr25 feem ntau siv. Feem ntau ntawm cov duplex stainless hlau siv nyob rau hauv Tuam Tshoj yog tsim nyob rau hauv Sweden. Cov qib tshwj xeeb yog: 3RE60 (Cr18 hom), SAF2304 (Cr23 hom), SAF2205 (Cr22 hom), thiab SAF2507 (Cr25 hom).