Low-lead brass alloy

Abstract

The invention relates to a low-lead brass alloy, comprising: by the total weight of the brass alloy, 62.5-63 wt % copper, 0.16-0.24 wt % lead, 0-0.02 wt % antimony, 0-0.01 wt % magnesium, 0-0.2 wt % tin, 0.0005-0.0009 wt % boron, 0.55-0.7 wt % aluminum, 0.05-0.15 wt % iron, 0-0.15 wt % nickel, 0.09-0.12 wt % arsenic, 0-0.005 wt % zirconium, 0-0.01 wt % impurities, and a balance of zinc.

What is claimed is: 
     
         1 . A low-lead brass alloy, characterized by comprising: by the total weight of the brass alloy, 62.5-63 wt % copper, 0.16-0.24 wt % lead, 0.55-0.7 wt % aluminum, and a balance of zinc. 
     
     
         2 . The low-lead brass alloy of  claim 1 , characterized by further comprising: one or more elements selected from the group consisting of 0-0.02 wt % antimony, 0-0.2 wt % tin, 0-0.01 wt % magnesium, and 0.09-0.12 wt % arsenic by the total weight of the brass alloy. 
     
     
         3 . The low-lead brass alloy of  claim 2 , characterized by further comprising: one or more elements selected from the group consisting of 0.0005-0.0009 wt % boron, 0.05-0.15 wt % iron, 0-0.15 wt % nickel, and 0-0.005 wt % zirconium by the total weight of the brass alloy. 
     
     
         4 . A low-lead brass alloy, characterized by comprising: by the total weight of the brass alloy, 62.5-63 wt % copper, 0.16-0.24 wt % lead, two or more elements selected from the group consisting of 0.55-0.7 wt % aluminum, 0-0.02 wt % antimony, 0-0.2 wt % tin, and 0-0.01 wt % magnesium by the total weight of the brass alloy, and a balance of zinc. 
     
     
         5 . The low-lead brass alloy of  claim 4 , characterized by further comprising: two or more elements selected from the group consisting of 0.09-0.12 wt % arsenic, 0.0005-0.0009 wt % boron, 0.05-0.15 wt % iron, 0-0.15 wt % nickel, and 0-0.005 wt % zirconium by the total weight of the brass alloy. 
     
     
         6 . A low-lead brass alloy, characterized by comprising: by the total weight of the brass alloy, 62.5-63 wt % copper, 0.16-0.24 wt % lead, 0-0.02 wt % antimony, 0-0.01 wt % magnesium, 0-0.2 wt % tin, 0.0005-0.0009 wt % boron, 0.55-0.7 wt % aluminum, 0.05-0.15 wt % iron, 0-0.15 wt % nickel, 0.09-0.12 wt % arsenic, 0-0.005 wt % zirconium, 0-0.01 wt % impurities, and a balance of zinc.