... 65Mn 2.color:bright,blue,yellow,black 3.size:0.3-2.5mmx40-250mm Black color cold rolled high carbon 65Mn steel ... strip,cold rolled steel strip 65Mn , high carbon steel strip 1) Material : 50# 65Mn2) ... , woodworking band saw, automatic clutch patch, reeling shutter spring steel strip ( round edge),horologe clockwork spring , lock making , ...