Muaj ob peb qib ntawm stainless hlau, muab faib ua plaub pawg loj. Ib qho tseem ceeb tshaj plaws yog austenitic stainless hlau. Austenitic stainless hlau alloys tau muab faib ua ob peb chav kawm raws li lawv cov tshuaj muaj pes tsawg leeg. Qhov zoo tshaj plaws stainless hlau hom yog 300 series. Cov chav kawm no muaj ntau yam thiab siv tau ntau yam, suav nrog Marine engineering, Marine engineering, general engineering, petrochemical kev lag luam thiab chaw muag tshuaj thiab zaub mov. Hais tias, qib 316 yog qhov thib ob feem ntau siv alloy hauv 300 series. Raws li nrog rau feem ntau austenitic stainless hlau alloys, chav kawm 316 yog hloov kho. Kev txhim kho rau stainless hlau feem ntau yog raws li lawv daim ntawv thov.
Feem ntau, kev hloov kho yog me me ntxiv lossis rho tawm ntawm cov ntsiab lus ntawm ib qho tshuaj muaj pes tsawg leeg. Piv txwv li, Marine qib 316 stainless hlau muaj cov ntsiab lus carbon siab hauv nws cov alloy. Carbon forms carbide precipitates ntawm qhov kub thiab txias thiab sensitizes lawv ntawm grain ciam teb precipitates. Raws li qhov tshwm sim ntawm rhiab heev, cov hlau ua tsis muaj zog thaum vuam. Vuam kub feem ntau yog siab dua vim hais tias lawv yuav tsum tau ib co hlau kom yaj nyob rau hauv thiaj li yuav fuse nws mus rau lwm qhov chaw los yog fuse nws tus kheej mus rau hauv ib tug tag nrho. Yog li ntawd, lub melted ib feem, lub tshav kub-cuam tshuam vuam cheeb tsam, yog tsawg resistant rau corrosion tshaj qhov seem ntawm qhov chaw. Raws li lwm qhov chaw saum npoo tsis tau rhuab los ntawm kev kho vuam, corrosion kuj tseem ruaj khov. Qhov no yog ib qho teeb meem cuam tshuam rau qib 316 stainless hlau welds. Yuav kom daws tau qhov teeb meem no, manufacturers tau tsim ib tug tsawg-carbon version ntawm no tshwj xeeb alloy.
