锰青铜 QMn1.5 QMn2 QMn5 C67000 C6
铬锆铜C18150 C181..
QCr0.5-0.2-0.1..
铬铜 QCr1 QCr0.5..
C86300 C99750 ..
锰青铜 QMn1.5 QMn..
C87400 C87900 ..