Q345 steel yog dab tsi?
Nws yog qhov qis- alloy siab- lub zog cov qauv hlau, nrog cov ntsiab lus carbon tsawg dua lossis sib npaug li 0.20% thiab lub zog tawm los Ntau dua lossis sib npaug li 345 MPa (thickness Tsawg dua lossis sib npaug li 16 mm). Lub teb chaws qub qauv yog GB / T 1591-2008, tam sim no hloov los ntawm Q345 (GB / T 1591-2018).
2. "Q345" txhais li cas?
Q: Yield zog (Qu); 345: Standard yield zog tus nqi ntawm 345 MPa.
3. Muaj pes tsawg qib zoo ntawm Q345?
5 qib: A / B / C / D / E, qhov sib txawv ntawm qhov tseem ceeb yog qhov qis - qhov kub thiab txias cuam tshuam.
4. Dab tsi yog qhov kub thiab txias rau txhua qib?
A: Tsis muaj kev cuam tshuam; B: +20℃; C: 0 degree; D: -20 degree; E: -40 degree.
5. Dab tsi yog qhov cuam tshuam ntawm thickness ntawm yield zog? Lub zog tawm los txo qis nrog nce thickness: Tsawg dua los yog sib npaug rau 16mm: Ntau dua lossis sib npaug rau 345MPa; 16-35mm: Ntau dua lossis sib npaug rau 335MPa; 35-50mm: Ntau dua lossis sib npaug rau 325MPa; 50-100mm: Ntau dua lossis sib npaug rau 315MPa.