722M24 / EN40B

3% Chromium–Molybdenum Nitriding Steel

Surcharge

£1259.49 per tonne

Surcharge Price History for 722M24 / EN40B

MAY 21 AUG 21 NOV 21 FEB 22 TODAY
£575.46 £729.01 £781.05 £836.46 £1,259.49

Product Method

Rolled or Forged

Finishes

Black Bar or Bright Bar

Description

722M24 grade steel is a chromium-molybdenum nitriding steel often supplied in the hardened and tempered condition (typically with 1075 N/mm² tensile strength).

After nitriding it develops a hard wear resistant case in the range of 61-65HRc with good resistance to shock and fatigue.

The relatively low temperature of the nitriding process produces components with a scale free surface and minimum distortion. No significant loss of surface hardness will result from operating temperature up to 500°C.

Size Range

32mm - 860mm Dia

Typical applications of 722M24 grade steel

  • Aircraft applications 
  • Crankshafts
  • Gears
  • Plastic moulds
  • Compressor discs
  • Pins
  • Spindles 
  • Bolts

722M24 steel is still often referred to as EN40B steel - its equivalent grade under the previous BS 970: 1955 standard.

Equivalent Grades

BS 970: 1955
EN40B
£123

Services

Stock Availability

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