CW617 yog European tus qauv tooj dag,
Cov tshuaj muaj pes tsawg leeg yog raws li nram no: CuZn40Pb2 (CW617N) Cu57-59, Al < 0.05, Ni < 0.3 Fe < 0.3 Pb1.6-2.5 Sn < 0.3 Zn lwm 0.2
Lead tooj dag yog ib qho tseem ceeb heev thiab feem ntau siv cov tooj dag complex nrog kev ua tau zoo heev thiab hnav tsis kam. Cov ntsiab lus ntawm cov hlau lead yog tsawg dua 3 feem pua, thiab ib qho me me ntawm Fe, Ni los yog Sn feem ntau ntxiv. Ph muaj nyob rau hauv lub xeev pub dawb hauv lub koom haum, thiab nws faib cov matrix, yog li cov hlau lead tooj dag muaj kev ua haujlwm zoo thiab txo kev sib txhuam.