The　hot　deformation　behaviors　of　H62　brass　are　investigated　by　isothermal　compression　tests　on　a　Gleeble　1500　thermal-mechanics　simulator　in　the　temperature　range　of　650-800　degrees　C　and　the　strain　rate　range　of　0.01-10　s(-1).　Most　of　the　stress-strain　curves　exhibit　a　single　peak　stress,　indicating　a　typical　dynamic　recrystallization　(DRX)　behavior　of　the　alloy.　Further　microstructural　observation　confirms　the　occurrence　of　DRX　behavior　and　the　beta　-＞alpha　phase　transformation　of　H62　brass　under　the　deformation　conditions.　A　new　constitutive　equation　coupling　flow　stress　with　strain,　strain　rate　and　deformation　temperature　is　developed　on　the　basis　of　the　Arrhenius-type　equation,　in　which　the　Zener-Hollomon　parameter　is　modified　by　considering　the　compensation　of　the　strain　rate.　In　the　constitutive　equation,　the　material　constants　alpha,　n,　Q　and　A　are　found　to　be　functions　of　the　strain.　The　flow　stress　predicted　by　the　constitutive　equation　shows　good　agreement　with　the　experimental　stress,　which　validates　the　efficiency　of　the　constitutive　equation　in　describing　the　deformation　behavior　of　the　material.　(C)　2011　Elsevier　B.V.　All　rights　reserved.