Q345 yog cov khoom siv los ntawm hlau. Nws yog cov hlau tsis tshua muaj hlau (C <0.2%) thiab="" siv="" dav="" hauv="" kev="" tsim="" kho,="" txuas="" hniav,="" tsheb,="" nkoj,="" nkoj="" siab,="" thiab="" lwm="" yam.="" q="" sawv="" cev="" rau="" cov="" khoom="" muaj="" zog="" ntawm="" cov="" khoom="" no,="" thiab="" tom="" kawg="" 345="" hais="" txog="" qhov="" txiaj="" ntsig="" ntawm="" qhov="" no="" cov="" khoom="" siv,="" ib="" puag="" ncig="" 345=""> Thiab cov txiaj ntsig tus nqi nce raws li cov thickness ntawm cov khoom nce.
Q345 muaj cov cuab yeej zoo txhua yam, qhov ntsuas kub tsis zoo, yas zoo thiab weldability. Nws yog siv los ua qhov nruab nrab, lub nkoj qis qis qis, roj tsheb, tsheb, crane, tsuas siv tshuab, chaw nres tsheb fais fab, choj thiab lwm cov qauv uas ntim cov khoom sib zog, cov khoom siv tshuab, lub tsev tsim, thiab cov khoom siv hlau dav dav, siv hauv cov txheej txheem kub lossis cov xwm txheej ib txwm muaj, tuaj yeem siv tau ntau qhov kev teeb tsa hauv thaj chaw txias qis dua -40 ° C.
