Low-lead bismuth-free silicon-free brass

Abstract

The invention relates to a low-lead bismuth-free silicon-free brass alloy with excellent cutting performance, comprising, by the total weight of the brass alloy, 60-65 wt % copper, 0.1-0.25 wt % lead, 0.1-0.7 wt % aluminum, 0.05-0.5 wt % tin, one or more element selected from the group consisting of 0.05-0.3 wt % phosphorus, 0.05-0.5 wt % manganese and 0.001-0.01 wt % boron, and a balance of zinc.

1 . A low-lead bismuth-free silicon-free brass alloy with excellent cutting performance, characterized by comprising: by the total weight of the brass alloy, 60-65 wt % copper, 0.1-0.25 wt % lead, 0.1-0.7 wt % aluminum and 0.05-0.5 wt % tin, and a balance of zinc. 
     
     
         2 . The brass alloy of  claim 1 , characterized by further comprising 0.05-0.5 wt % manganese and/or 0.05-0.3 wt % phosphorus by the total weight of the brass alloy. 
     
     
         3 . The brass alloy of  claim 1 , characterized by further comprising one or more element selected from the group consisting of 0.05-0.3 wt % phosphorus, 0.05-0.5 wt % manganese and 0.001-0.01 wt % boron by the total weight of the brass alloy. 
     
     
         4 . The brass alloy of  claim 1 , characterized by further comprising 0.05-0.3 wt % phosphorus, 0.05-0.5 wt % manganese and 0.001-0.01 wt % boron by the total weight of the brass alloy. 
     
     
         5 . The brass alloy of  claim 4 , characterized by further comprising: unavoidable impurities which comprise, by the total weight of the brass alloy, 0.25 wt % or less nickel, 0.15 wt % or less chrome and/or 0.25 wt % or less iron. 
     
     
         6 . The brass alloy of  claim 4 , characterized in that a total content of manganese, aluminum, tin, phosphorus and boron is not larger than 2 wt % of the total weight of the brass alloy. 
     
     
         7 . The brass alloy of  claim 6 , characterized in that the total content of manganese, aluminum, tin, phosphorus and boron is not less than 0.1 wt % of the total weight of the brass alloy. 
     
     
         8 . A low-lead bismuth-free silicon-free brass alloy with excellent cutting performance, characterized by comprising: by the total weight of the brass alloy, 60-65 wt % copper, 0.1-0.25 wt % lead, two or more elements selected from the group consisting of 0.1-0.7 wt % aluminum, 0.05-0.5 wt % tin, 0.05-0.3 wt % phosphorus, 0.05-0.5 wt % manganese and 0.001-0.01 wt % boron, and a balance of zinc. 
     
     
         9 . The brass alloy of  claim 8 , characterized by further comprising: unavoidable impurities which comprise, by the total weight of the brass alloy, 0.25 wt % or less nickel, 0.15 wt % or less chrome and/or 0.25 wt % or less iron. 
     
     
         10 . A low-lead bismuth-free silicon-free brass alloy with excellent cutting performance, characterized by comprising: 60-65 wt % copper, 0.1-0.25 wt % lead, 0.05-0.5 wt % tin and 0.05-0.3 wt % phosphorus by the total weight of the brass alloy, and a balance of zinc. 
     
     
         11 . The brass alloy of  claim 10 , characterized by further comprising two or more elements selected from the group consisting of 0.1-0.7 wt % aluminum, 0.05-0.5 wt % manganese and 0.001-0.01 wt % boron by the total weight of the brass alloy. 
     
     
         12 . The brass alloy of  claim 11 , characterized by further comprising: unavoidable impurities which comprise, by the total weight of the brass alloy, 0.25 wt % or less nickel, 0.15 wt % or less chrome and/or 0.25 wt % or less iron.