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Alloy steel grade EN40 | 722M24

EN40B | 722M24 Engineering steel

EN40B is a chromium-molybdenum nitriding steel characterised by its suitability for nitriding which promotes high wear resistance.

The material is supplied in the hardened and tempered ‘T’ condition, EN40B offers good toughness, excellent shock resistance and good ductility.  It is classed as a nitriding steel, this process produces a scale free surface with minimal distortion.

EN40B | 722M24 Sub Zero grade is good when fabricating containers where boats go into sub zero temperatures. The steel can withstand the cold without deterioration. Its impact resistance can work in many situations including constant impact as a moving part but has great resistance and the material has high durability.

EN40B Engineering Steel also offers high wear resistance.

Steel stock range

High Peak Steels stock EN40B | 722M24 in black steel round bar.

Associated standards

UK Standard EN40B | European Grades 32CrMo12 | Werkstoff 1.7361

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Steel stock grades

Order EN40B | 722M24 steel

EN40B Black round

EN40B | 722M24 black steel

ProductMin sizeMax size
codes-round225mm dia300mm (forged bar above 300mm dia)
codes-flat2
codes-square2
codes-hex2

EN40B | 722M24 Chemical Composition

CSiMnSPCrNiMo
Min0.20.10.452.80.4
Max0.280.350.70.040.0353.30.40.6

EN40B | 722M24 Mechanicals

Yield
N/mm2
0.2% proof
N/mm2
UTS (Rm)
N/mm2
Elong (A)
%
Red of Area (Z)
%
Hardness
HB
Impact Test (KV)
J
Annealed (min)
Annealed (max)255
Quenched & Tempered to condition T (min)
6808501324850
Quenched & Tempered to condition T (max)
1000302
Quenched & Tempered to condition U (min)
7559251226942
Quenched & Tempered to condition U (max)
1075331

Typical Applications of EN40B steel

  • DRILLS
  • GUIDES
  • SHAFTS
  • GEAR WHEELS
  • BOLTS AND FIXINGS