EN40B Nitriding Steel

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by Nifty Alloys lLC

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EN40B (722M24) is a chromium-molybdenum based engineering steel grade from Thames Stockholders which is often delivered in the hardened and tempered condition. It benefits from good wear resistance and high fatigue strength. This can increase a tensile strength of up to 1075 N/mm². Nitriding yields a hard and wear resistant casing resulting in an engineering material which delivers good fatigue and shock resistance. The nitriding process is usually performed at a comparatively low temperature which brings about a scale-free surface with minimal distortion.

EN40B (722M24) can function in atmospheres of up to 500 °C before any loss in surface hardness is noticed. EN40B is delivered in the hardened and tempered ‘T’ condition. This nitriding steel also offers a good combination of toughness and ductility. When supplied in the ‘T’ condition, EN40B is ideal for applications necessitating high creep resistance and high tensile strength.

EN40B (722M24) has become a widely used engineering material in industries such as automotive, textiles, and aerospace. It is also widely used by billet crankshaft manufacturers.

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Grades we supply

EN16T EN19T EN24T EN26W EN30B EN31 EN32 EN36 EN41B

605M36T 709M40T 708M40T 817M40T 826M40W 835M30 535A99 655M13 722M24 905M39

4130 4140 4145 4330V 4340 8620 6150 S690QL

42CrMo4 16MnCr5

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ApplicationsAnalysisForgingAnnealingHardeningTemperingTypical Mechanical Properties*Heat Treatment
EN40B (722M24) is delivered in the ‘T’ condition. Examples of commercial application are listed below: Crankshafts and gears Spindles and pins Gear wheels Compressor discs Cams, pinions, and gudgeon pins Used in aerospace, automotive, textile, and general engineering applications

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