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.
EN9 is used commonly for many general engineering applications. Typical applications include shafts, axes, knives, bushes, crankshafts, screws, sickles, woodworking drills, and hammers.
|BS 970 1991||BS 970 1955 EN||AISI/SAE||Werksoff|
Addition to other grades:
MS, EN1A, EN3B, EN8, EN8D, EN9, EN19, EN24, EN31, EN32B, EN36C, EN41B, EN43B, EN47, EN353, IS2062, 42Crmo4, HCHCR, D2, D3, H-11, H-13, CW-1, OHNS, M2, M35, M42, DIN1.2714, P20, P20+S, P20+Ni, SCM420, ASTMSA-36, ASTMSA-105, SAE1018, SAE4140, SAE8620, 16MNCR5, 20MNCR5, C20, C45, C50, C60, CK45, 20C8, 40C8, 45C8, 55C8, C55MN75, SAE52100, S40C, S355J2G3.
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The following table shows the chemical composition of EN9 steel:
|Content(%)||0.50-0.60||0.4 Max||0.50-0.80||0.035 Max||0.015-0.035||0.30 Max|
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. Other considerations during the heat treatment process include the type of furnace, quenching medium, and workpiece transfer facilities.
Heat slowly to 820-840°C and allow it to be heated through. Quench in oil, brine, or water.
Temper the EN9 steel component immediately after quenching whilst still hand warm. Re-heat to the tempering temperature then soak for one hour per 25 millimeters of total thickness (2 hours minimum) Cool in air. For most applications tempering of EN9 will be between 550-660°C.
Preheat the component carefully, then raise the temperature to 1100°C for forging. Do not forge below 850°C. After forging cool slowly, preferably in a furnace.
The normalizing temperature range for this grade is typically 820-880ºC, followed by cooling in still air.
Heat slowly to 680-710°C, soak well. Cool slowly in the furnace.
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