Q345B thiab Q355B yog ob qho tib si qis - alloy siab - lub zog steels dav siv hauv kev tsim kho, tshuab, thiab engineering tej yaam num. Q355B yog qhov hloov kho tshiab rau Q345B raws li qhov tseeb GB / T 1591 tus qauv, nrog cov khoom siv kho kom zoo dua qub thiab tswj cov tshuaj lom neeg ntau dua.
Piv nrog Q345B, Q355B muabsiab yield zog(Ntau dua lossis sib npaug ntawm 355 MPa vs. Ntau dua lossis sib npaug ntawm 345 MPa), zoo dua qhov cuam tshuam toughness, thiab ruaj khov tag nrho kev ua tau zoo. Nws kuj tseem muaj kev txhim kho weldability, khoov kev ua tau zoo, thiab ua haujlwm ntev, tso cai rau kev tsim qauv sib dua thaum tswj kev nyab xeeb thiab thauj khoom- cov kabmob muaj peev xwm.
Txawm hais tias lawv cov ntawv thov zoo sib xws, Q355B tau maj mam dhau los ua qhov kev xaiv zoo tshaj plaws hauv kev tsim vaj tsev niaj hnub vim nws lub zog siab dua - rau - qhov hnyav piv, tus nqi zoo dua, thiab ua raws li cov qauv tshiab thoob ntiaj teb.
Cov khoom sib piv ntawm Q345B thiab Q355B steel:
| Qib | Yield zog MPa nyob rau hauv txawv thickness mm | ||||||||
| Tsawg dua los yog sib npaug li 16 | 16-40 | 40-63 | 63-80 | 80-100 | 100-150 | 150-200 | 200-250 | 250-400 | |
| Q345B | Ntau dua lossis sib npaug rau 345 | Ntau dua lossis sib npaug rau 335 | Ntau dua lossis sib npaug rau 325 | Ntau dua lossis sib npaug rau 315 | Ntau dua lossis sib npaug rau 305 | Ntau dua lossis sib npaug li 285 | Ntau dua lossis sib npaug li 275 | Ntau dua lossis sib npaug rau 265 | - |
| Q355B | Ntau dua lossis sib npaug rau 355 | Ntau dua lossis sib npaug rau 345 | Ntau dua lossis sib npaug rau 335 | Ntau dua lossis sib npaug rau 325 | Ntau dua lossis sib npaug rau 315 | Ntau dua lossis sib npaug li 295 | Ntau dua lossis sib npaug li 285 | Ntau dua lossis sib npaug li 275 | - |
| Qib | Tensile zog MPa nyob rau hauv txawv thickness mm | ||||||
| Tsawg dua los yog sib npaug li 40 | 40-63 | 63-80 | 80-100 | 100-150 | 150-250 | 250-400 | |
| Q345B | 470-630 | 470-630 | 470-630 | 470-630 | 450-600 | 450-600 | - |
| Q355B | 470-630 | 470-630 | 470-630 | 470-630 | 450-600 | 450-600 | - |
GNEE steel tuaj yeem muab cov hlau tsis tshua muaj hlau Q345B thiab Q355B steel phaj nrog kev pabcuam ntxiv. Txais tos xa peb cov lus nug yog tias koj xav tau Q345B phaj nqe.
Cim npe nrov: Kev Tsim Kho Q355B VS Q345B Cov Qauv Hlau, Tuam Tshoj Kev Tsim Kho Q355B VS Q345B Cov Qauv Hlau Tuam Tshoj, cov chaw muag khoom, Hoobkas
