Dezincification-resistant copper alloy

Abstract

A dezincification-resistant copper alloy is provided. The copper alloy comprises less than 0.3 wt % of lead (Pb), 0.02 to 0.15 wt % of antimony (Sb), 0.02 to 0.25 wt % of arsenic (As), 0.4 to 0.8 wt % of aluminum (Al), 1 to 20 ppm of boron (B), and more than 97 wt % of copper (Cu) and zinc (Zn), wherein the copper is in an amount ranging from 58 to 70 wt %. The dezincification-resistant copper alloy of the present invention has excellent casting properties, good toughness and machinability, and can be corrosion-resistant, thereby reducing dezincification on the surfaces of the alloy.

1 . A dezincification-resistant copper alloy, comprising:
 less than 0.3 wt % of lead (Pb);   0.02 to 0.15 wt % of antimony (Sb);   0.02 to 0.25 wt % of arsenic (As);   0.4 to 0.8 wt % of aluminum (Al);   1 to 20 ppm of boron (B); and   more than 97 wt % of copper (Cu) and zinc (Zn), wherein the copper is in an amount ranging from 58 to 70 wt %.   
     
     
         2 . The dezincification-resistant copper alloy of  claim 1 , wherein the copper is in an amount ranging from 61 to 65 wt %. 
     
     
         3 . The dezincification-resistant copper alloy of  claim 1 , wherein the antimony is in an amount ranging from 0.04 to 0.12 wt %. 
     
     
         4 . The dezincification-resistant copper alloy of  claim 1 , wherein the arsenic is in an amount ranging from 0.13 to 0.17 wt %. 
     
     
         5 . The dezincification-resistant copper alloy of  claim 1 , wherein the boron is in an amount ranging from 8 to 14 ppm. 
     
     
         6 . The dezincification-resistant copper alloy of  claim 1 , further comprising at least one of nickel and tin in an amount ranging from 0.2 to 1.25 wt %. 
     
     
         7 . The dezincification-resistant copper alloy of  claim 1 , wherein the tin is in an amount ranging from 0.1 to 1 wt %. 
     
     
         8 . The dezincification-resistant copper alloy of  claim 6 , wherein the nickel is in an amount ranging from 0.1 to 0.25 wt %.