Size of E52100 carbon alloy steel round bar Round bar Diameter(mm) 20~800 Length (mm) 3000~9000 Plate Thickness(mm) Max:800 Width (mm) Max:2200 Length (mm) Max:9000 The specification can be customized. Features of E52100 carbon alloy steel round bar 1, High carbon alloy steel 2, High degree of hardness 3, Good compressive strength and abrasion resistance 4,Typical Applications of E52100 carbon alloy steel round bar 1, Taps, gauges, swaging dies, ejector pins 2, Ball and roller bearings 3, Machine parts and for press tools