Farm tractor disc plow 1.material:60Si2Mn/28MnSiB 2.process:forged/tempered 3.HRC:44- ... working hrs:200-250 hrs Europe native products farm disc steel plowcompany nature:tiller blade manufacturercompany history:since 1989Supplying high ... Japan, Europe, USA, India, Middle East, Australia, etc.1)Material: spring steel, 65Mn, 60Si2Mn (Sup6), 28SiMnB2)Process: forged3)Heat treatment: normalized-hardened ...