Lead-free and antimony-free brass alloy

Abstract

A lead-free and antimony-free brass alloy contains from 56 to 66% by weight of Cu, from 0.1 to less than 0.5% by weight of Mg, less than 0.1% by weight of Pb, and a balance of Zn. Unavoidable impurities are also present. According to other embodiments, different amounts of As, P, AI, Sn, Cu, Mg, Pb, In and Zn may be provided as well.

1 . A lead-free and antimony-free brass alloy, consisting of:
 from 56 to 66% by weight of Cu;   from 0.1 to less than 0.5% by weight of Mg;   less than 0.1% by weight of Pb;   from 40 to 42.5% by weight of Zn; and   unavoidable impurities.   
     
     
         2 . The lead-free and antimony-free brass alloy according to  claim 1 , which consists of:
 from 57 to less than 60% by weight of Cu;   from 0.1 to less than 0.5% by weight of Mg;   less than 0.1% by weight of Pb;   from 40 to 42.5% by weight of Zn; and   unavoidable impurities.   
     
     
         3 . The lead-free and antimony-free brass alloy according to  claim 2 , which consists of:
 from 57.5 to 58.5% by weight of Cu;   from 0.1 to less than 0.5% by weight of Mg;   less than 0.1% by weight of Pb;   from 40 to 42.5% by weight of Zn; and   unavoidable impurities.   
     
     
         4 . The lead-free and antimony-free brass alloy according to  claim 1 , which consists of:
 from 56 to 66% by weight of Cu;   less than 0.5% by weight of Mg;   less than 0.1% by weight of Pb;   from 40 to 42.5% by weight of Zn; and   unavoidable impurities.   
     
     
         5 . The lead-free and antimony-free brass alloy according to  claim 1 , which consists of:
 from 56 to 66% by weight of Cu;   from 0.1 to less than 0.5% by weight of Mg;   from 0.05% to 0.09% by weight of Pb;   from 40 to 42.5% by weight of Zn; and   unavoidable impurities.   
     
     
         6 . A lead-free and antimony-free brass alloy, consisting of:
 from 56 to 66% by weight of Cu;   from 0.1 to less than 0.5% by weight of Mg;   less than 0.1% by weight of Pb;   less than 0.15% by weight of As;   less than 0.15% by weight of P;   less than 0.1% by weight of Al;   less than 0.1% by weight of Sn;   less than 0.005% by weight of In;   from 40 to 42.5% by weight of Zn; and   unavoidable impurities.   
     
     
         7 . A lead-free and antimony-free brass alloy, which consists of:
 from 56 to 66% by weight of Cu;   from 0.1 to less than 0.5% by weight of Mg;   from 40 to 42.5% by weight of Zn; and   unavoidable impurities.   
     
     
         8 . A lead-free and antimony-free brass alloy, comprising:
 from 56 to 66% by weight of Cu;   from 0.1 to less than 0.5% by weight of Mg;   less than 0.1% by weight of Pb;   a balance by weight of Zn; and   unavoidable impurities.