Q235COIL carbon cov ntsiab lus yog dab tsi?
Cov pa roj carbon (C): 0.14% ~ 0.22%, cov ntsiab lus carbon tsawg ua kom zoo plasticity thiab weldability.
Dab tsi yog cov ntsiab lus alloying?
Cov ntsiab lus tseem ceeb: Manganese (Mn) 0.30% ~ 0.70%, Silicon (Si) ≤0.35%, tsis muaj cov khoom muaj txiaj ntsig zoo.
Dab tsi yog qhov yuav tsum tau muaj rau sulfur thiab phosphorus impurity cov ntsiab lus?
Sulfur (S) ≤0.045%, Phosphorus (P) ≤0.045%, qib siab dua, kev tswj kev tsis huv.
Dab tsi yog qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg ntawm cov qib sib txawv?
Qhov txwv sab saud ntawm impurities yog tib yam rau qib A thiab B; sulfur thiab phosphorus ≤0.040% rau qib C thiab D, qib D muaj kev cuam tshuam zoo dua.
Cov ntsiab lus carbon cuam tshuam li cas rau kev ua haujlwm?
Cov ntsiab lus carbon ntau ntxiv ua rau muaj zog thiab hardness, tab sis txo cov yas thiab weldability. Q235's qis-carbon tsim sib npaug kev ua haujlwm thiab kev ua tiav.