Q345 steel yog dab tsi?
Tsawg- alloy siab- lub zog steel qauv, yav tas los GB/T 1591-2008, tam sim no hloov los ntawm Q355 (GB/T 1591-2018).
2. "Q345" txhais li cas?
Q: Yield zog (thawj tsab ntawv ntawm "屈" hauv pinyin)
345: Yield zog Ntau dua los yog sib npaug rau 345MPa rau thickness Tsawg dua los yog sib npaug rau 16mm
3. Muaj pes tsawg qib zoo?
Tsib qib: A, B, C, D, thiab E, nrog txo qhov cuam tshuam qhov kub thiab nce toughness hauv txhua qib.
4. Cov kev cai cuam tshuam rau txhua qib?
Q345A: Tsis muaj kev cuam tshuam
Q345B: +20℃cuam tshuam
Q345C: 0℃cuam tshuam
Q345D: -20℃cuam tshuam
Q345E: -40℃cuam tshuam
5. Core chemical muaj pes tsawg leeg (wt%)? C Tsawg dua lossis sib npaug li 0.20; Si Less dua los yog sib npaug rau 0.55; Mn: 1.00–1.60; P Tsawg dua lossis sib npaug rau 0.035; S Tsawg dua lossis sib npaug rau 0.035; Muaj cov lej ntawm Nb / V / Ti txhawm rau kho cov nplej loj.