Editing Selenium (section)

===Alloys===
Selenium is used with [[bismuth]] in [[brass]]es to replace more toxic [[lead]]. The regulation of lead in drinking water applications such as in the US with the [[Safe Drinking Water Act]] of 1974, made a reduction of lead in brass necessary. The new brass is marketed under the name EnviroBrass.<ref>{{cite book|url= https://books.google.com/books?id=sxkPJzmkhnUC&pg=PA91|page= 91|title= Copper and Copper Alloys|isbn= 978-0-87170-726-0|last1= Davis|first1=Joseph R.|date= 2001 |publisher= ASM Int. }}</ref><!--https://books.google.com/books?id=SZ1RAAAAMAAJ&pg=PA378--> Like lead and sulfur, selenium improves the machinability of steel at concentrations around 0.15%.<ref>{{cite book|url= https://books.google.com/books?id=QahG1Ou1cyEC&pg=PA67|page= 67|title= Cutting Data for Turning of Steel|isbn= 978-0-8311-3314-6|last1= Isakov|first1= Edmund|date= 2008-10-31|publisher= Industrial Press}}</ref><ref>{{cite journal|doi= 10.1007/BF00708374|title= Effect of selenium on the structure and properties of structural steel|date= 1979|last1= Gol'Dshtein|first1=Ya. E.|last2= Mushtakova|first2=T. L.|last3= Komissarova|first3=T. A.|journal= Metal Science and Heat Treatment|volume= 21|issue= 10|pages= 741–746|bibcode= 1979MSHT...21..741G|s2cid= 135853965}}</ref> Selenium produces the same machinability improvement in copper alloys.<ref>{{cite book|url= https://books.google.com/books?id=sxkPJzmkhnUC&pg=PA278 |page=278 |title= Copper and Copper Alloys|isbn= 978-0-87170-726-0|last= Davis |first=Joseph R.|publisher=[[ASM International (society)|ASM International]]|date= 2001}}</ref>