|Single Piece Length||3-12 Meter|
EN8 is an unalloyed medium carbon steel grade with reasonable tensile strength. It is normally supplied in the cold drawn or as rolled condition. Tensile properties can vary but are usually between 500-800 N/mm². EN8 is widely used for applications which require better properties than mild steel but does not justify the costs of an alloy steel. EN8 can be flame or induction hardened to produce a good surface hardness with moderate wear resistance. EN8 is available from stock in bar and can be cut to your requirements. We also offer flame cut plates cut to your required sizes and normalised. EN8 plates can be supplied surface ground or precision ground
Analysis Carbon 0.35-0.45% Phosphorous 0.06% max Manganese 0.60-1.00% Sulphur 0.06% max Silicon 0.05-0.35%
Applications EN8 is widely used for many general engineering applications. Typical applications include shafts, studs, bolts, connecting rods, screws, rollers
Forging Preheat the steel carefully, then raise temperature to 1050°C for forging. Do not forge below 850°C. After forging cool slowly, preferably in a furnace.
Annealing Heat slowly to 680-710°C, soak well. Cool slowly in the furnace.
Hardening Heat the component slowly to 820-860°C and allow it to be heated through. Quench in oil or water.
Tempering Temper the EN8 component immediately after quenching whilst tools are still hand warm. Re-heat the EN8 component to the tempering temperature then soak for one hour per 25 millimetre of total thickness (2 hours minimum) Cool in air. For most applications tempering of EN8 will be between 550-660°C
Welding We recommend you contact your welding consumables supplier who should provide you full assistance and information on welding EN8 steel.
Heat Treatment Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each EN8 steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of EN8 carbon steel.