Low Shrinkage Corrosion-Resistant Brass Alloy

Abstract

A low shrinkage corrosion-resistant brass alloy contains 58 to 64 wt % of copper; 0.1 to 0.3 wt % of tin; less than 0.25 wt % of lead; 0.01 to 0.15 wt % of phosphorus; and more than 97.5 wt % of copper and zinc; zinc and unavoidable impurities; and more than 98 wt % of copper and zinc. It is to be noted that at least two of nickel, niobium, zirconium and aluminum is in an amount ranging from 0.01 to 0.4 wt %.

What is claimed is: 
     
         1 . A low shrinkage corrosion-resistant brass alloy comprising:
 58 to 64 wt % of copper;   0.1 to 0.3 wt % of tin;   less than 0.25 wt % of lead;   0.01 to 0.15 wt % of phosphorus; and   more than 97.5 wt % of copper and zinc, wherein at least two of nickel, niobium, zirconium and aluminum is in an amount ranging from 0.01 to 0.4 wt %;   zinc and unavoidable impurities; and   more than 98 wt % of copper and zinc.   
     
     
         2 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 1 , wherein the niobium is in an amount ranging from 0.07 to 0.15 wt %. 
     
     
         3 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 2 , wherein the nickel is in an amount ranging from 0.07 to 0.15 wt %. 
     
     
         4 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 3 , wherein the lead is in an amount ranging from 0.08 to 0.2 wt %. 
     
     
         5 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 4 , wherein the tin is in an amount ranging from 0.15 to 0.25 wt %. 
     
     
         6 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 5 , wherein the phosphorus is in an amount ranging from 0.08 to 0.15 wt %. 
     
     
         7 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 6 , wherein the zirconium is in an amount ranging from 0.07 to 0.15 wt %. 
     
     
         8 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 7 , wherein the aluminum is in an amount ranging from 0.07 to 0.25 wt %. 
     
     
         9 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 1 , wherein the nickel is in an amount ranging from 0.07 to 0.15 wt %. 
     
     
         10 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 1 , wherein the lead is in an amount ranging from 0.08 to 0.2 wt %. 
     
     
         11 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 1 , wherein the tin is in an amount ranging from 0.15 to 0.25 wt %. 
     
     
         12 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 1 , wherein the phosphorus is in an amount ranging from 0.08 to 0.15 wt %. 
     
     
         13 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 1 , wherein the zirconium is in an amount ranging from 0.07 to 0.15 wt %. 
     
     
         14 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 1 , wherein the aluminum is in an amount ranging from 0.07 to 0.25 wt %. 
     
     
         15 . The low shrinkage corrosion-resistant brass alloy as claimed in  claim 1 , wherein at least two of nickel, niobium, zirconium and aluminum is in an amount ranging from 0.07 to 0.25 wt %.