Q235 steel yog dab tsi?
Q235 yog ib hom carbon structural steel teev nyob rau hauv Suav teb tus qauv GB / T 700-2006, feem ntau hu ua "A3 steel," thiab yog ib qho ntawm feem ntau siv cov hlau yooj yim.
"Q235" txhais li cas hauv kev xaiv qib?
"Q" sawv cev rau lub zog tawm los (thawj tsab ntawv ntawm tus pinyin rau "屈"). "235" qhia tias lub zog tawm los yog ntau dua lossis sib npaug rau 235MPa thaum cov hlau tuab tsawg dua lossis sib npaug li 16 hli.
Dab tsi yog qhov txawv ntawm Q235 thiab Q195, Q215, Q255, thiab Q275?
Q195/Q215: Lub zog qis zog, zoo plasticity, haum rau nyias daim hlau, rau tes, thiab welded steel kav;
Q255/Q275: Ntau zog tawm los, muaj zog dua Q235, haum rau nruab nrab load-cov kabmob thiab cov thauj tog rau nkoj.
Nws zoo li cas rau cov qib thoob ntiaj teb?
Nws yog sib npaug rau ASTM A36 (USA), JIS SS400 (Nyiv), thiab S235JR (Tebchaws Europe).
Cov pa roj carbon ntau npaum li cas?
Qib A muaj cov ntsiab lus carbon tsawg dua lossis sib npaug li 0.22%, Qib B Tsawg dua lossis sib npaug li 0.20%, Qib C Tsawg dua lossis sib npaug li 0.18%, thiab Qib D Tsawg dua lossis sib npaug li 0.17%, uas raug cais raws li qis- carbon steel.