Tom qab cov pa roj carbon tsawg thiab cov pa roj carbon dioxide (carbon alloy) yog quenched hauv martensite, txoj cai dav dav yog tias lub zog txo thiab cov yas thiab lub zog ua kom nce kub li cas. Txawm li cas los xij, vim muaj cov ntsiab lus sib txawv hauv cov cua qis thiab qib nruab nrab, qhov kub thiab txias kub tau sib txawv rau lawv. Yog li ntawd, thiaj li yuav tau txais cov cuab yeej zoo tsim kho, cov nram qab no yuav tau muab cais:
(1) Xaiv cov roj qis (hlau), thiab tom qab quenching, npau ntawm qhov kub tsis txias ntawm 250 ° C los yog qis dua kom tau cov qis qis dua. Txhawm rau txhawm rau txhim kho cov khoom hnyav ntawm cov hlau no, tsuas yog cov ntsiab lus ntawm cov txheej txheem ntawm cov zauv ntim ntau zuj zus ntxiv, uas yog, qhov sib tw ntawm qhov chaw ua haujlwm, uas feem ntau hu ua carburised structural steel.
(2) Muab cov dej nruab nrab nrog cov pa roj carbon dioxide rau siab, thiab kub siab thaum kub siab (500-650 ° C) tom qab quenching (sib quenching thiab tempering kho), kom nws muaj peev xwm tuav lub zog txaus nyob hauv siab yas, feem ntau hu ua Qhov no hom hlau yog quenched thiab tempered hlau. Yog hais tias koj xav tau lub zog siab, tab sis xav kom txo cov yas thiab muaj zog, qhov kub thiab txias kub tau ua tiav rau cov kub uas muaj kub uas muaj cov ntsiab lus qis, kom lub npe hu ua "ultra-high-strength steel".
(3) Cov qhab nia hlau nrog cov ntsiab lus nruab nrab ntawm cov pa roj carbon nrab thiab cov pa roj carbon zoo (xws li 60, 70 steel) thiab qee cov pa roj carbon fiber ntau (xws li 80, 90 steel), yog siv los ua dej, txwv, kev txwv tsis pub muaj kev txwv thiab qaug zog, ntsuas kub kub kub tom qab siv quenching.