... Exporter 1045 different type Industry Sprocket Specification MaterialC45, A3, 40Cr, 20CrMnTi, 42CrMo, copper, stainless steel and so on as per your ... hub)International Standard : ANSI B29.1MMaterial Selection : 1045, 1023,nylon,20CrMnTi, SCM 415, stainless steel,cast iron..etcMaterial Factors : Power transmission ...