Stainless hlau haum

Tom qab kev daws teeb meem, lub zog tensile kuj siab heev -feem ntau yog li ntawm 800 txog 1100 MPa- thiab tsis tuaj yeem txo. Kev ua haujlwm- hardening tus nqi nce siab, nrog rau qhov txias - ua haujlwm ntxiv zog coefficient (K) ntau dua 15; qhov no ua rau kev ua haujlwm nyuaj thiab nce nqi ntau lawm. Thaum cov khoom muaj kev hnav zoo heev, nws qhov kev ua tau zoo hauv kev khoov thiab txias - kev ua haujlwm tsis zoo. Tsis tas li ntawd, cov tsoos 200-series steels muaj qhov cuam tshuam rau kev cuam tshuam ntawm intergranular corrosion, ib qho rhiab heev uas tsis tuaj yeem txo tau txawm tias qhov sib ntxiv ntawm cov khoom ruaj khov. Muab cov yam ntxwv no -lub zog siab, ua haujlwm tau zoo- tawv tawv, thiab hnav tsis kam zoo- cov khoom siv tshwj xeeb tuaj yeem siv tau zoo hauv kev siv tswv yim. Kev sib piv ntawm cov tshuaj muaj pes tsawg leeg ntawm 200-series stainless steels qhia ob pawg raws li cov ntsiab lus carbon: ib qho nrog cov ntsiab lus carbon ntau tshaj 0.10%, thiab lwm qhov nrog cov ntsiab lus qis dua (uas yuav cuam tshuam rau hnav tsis kam). Qhov sib ntxiv ntawm manganese (Mn) tso cai rau txo qis hauv cov ntsiab lus npib tsib xee (Ni) - feem ntau tsuas yog 2-6% - yog li kev lag luam zoo heev ntawm kev siv nickel. Txawm li cas los xij, txij li cov ntsiab lus chromium (Cr) tseem nyob nruab nrab ntawm 14% thiab 20%, cov khoom siv los tiv thaiv corrosion tsis cuam tshuam, ua rau 200-series tau siv thoob plaws ntau thaj chaw.