EN41 Nitriding Steel

EN41 & EN41B steel stockholders and suppliers. EN41 is a chromium aluminium molybdenum steel available as full bar lengths or cut pieces with delivery to the whole of the UK. This specification is usually supplied in the hardened and tempered ‘R’ or ‘S’ condition. EN41 ‘R’ condition has a tensile of 700-850 N/mm². EN41’S’ condition has a tensile of 775-925 N/mm². It offers high wear resistant properties together with toughness and ductility. It is defined by its suitability for nitriding from which EN41 can give a hard wear resistant case up to 68HRc, better than achievable with the similar nitriding grade EN40B.

We welcome export enquiries for nitriding steel. Contact our sales office and consult our shipping policy for further details.

Alternative alloy steel grades we supply

EN16T | EN19T | EN24T | EN26W | EN30B | EN31 | EN32 | EN36 | EN40B |

Form of Supply

West Yorkshire Steel are EN41 & EN41B steel stockholders and suppliers of round bar. Diameters in EN41B can be sawn to your required lengths as one offs or multiple cut pieces. EN41 & EN41B ground steel bar can be supplied, providing a high tensile engineering steel precision ground bar to tight tolerances.

Click here to contact our experienced sales team who will assist you with your EN41 nitriding steel enquiry.

  • Diameter

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EN41 is suited for applications that required excellent resistance to wear and abrasion. Typical applications include connecting rods, small extruders, valve stems, dies. It is widely used in the automotive, textile and general engineering industries. Suitable for applications requiring a resistance to wear, it is also suitable for other applications such as brick press plates, clutch plates, gudgeon, track and shackle pins.

Carbon 0.35-0.45% Manganese 0.65% max
Silicon 0.10-0.45% Nickel 0.40% max
Chromium 1.40-1.80% Phosphorous 0.05% max
Molybdenum 0.10-0.25% Sulphur 0.05% max
Aluminium 0.90-1.30%

Heat slowly to 650-700°C. Cool in air.

EN41 is supplied ready heat treated. If further heat treatment is required annealed EN41 should be heated slowly to 870-930°C and after adequate soaking at this temperature quench in oil/polymer or water. Temper as soon as tools reach room temperature.

Heat carefully to a suitable temperature selected by reference to a tempering chart or table (usually between 580-700°C). Soak at the temperature for 2 hours per 25mm of ruling section, then allow to cool in the air.

Condition Tensile
R 700-850 525 17 50 201-255
S 775-925 585 15 50 223-277

(*subject to ruling section)

Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each 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 EN41 alloy nitriding steel.

EN41 alloy steel is available with a cast and analysis certificate or a BS EN 10204 3.1 mill certificate, please request when placing any orders.

EN41 is supplied in accordance with our ISO 9001:2015 registration.