EN 9

Grade Introduction:

EN9 carbon steel is a medium carbon steel grade commonly supplied in the as-rolled condition. It can be flame or induction hardened to produce a high surface hardness with excellent wear resistance for a carbon steel grade. EN9 bar is available in full lengths or can be cut to your requirements. EN9 carbon round steel bar flame cut steel plates can be supplied cut to your required sizes and normalized. Flame cut plates can be supplied Lumsden ground or precision ground.

Grade Application:

EN9 is used commonly for many general engineering applications. Typical applications include shafts, axes, knives, bushes, crankshafts, screws, sickles, woodworking drills, and hammers.

Equivalent grades:

BS 970 1991 BS 970 1955 EN AISI/SAE Werksoff
070M55 EN9 1055 1.0535

Chemical composition:

The following table shows the chemical composition of EN9 steel:

Element C Si Mn P S Cr
Content (%) 0.50-0.60 0.4 Max 0.50-0.80 0.035 Max 0.015-0.035 0.30 Max


Heat slowly to 820-840°C and allow it to be heated through. Quench in oil, brine, or water.

Heat Treatment :

Heat treatment temperatures, including the rate of heating, cooling, and soaking times will vary due to factors such as the shape and size of each EN9 steel component.