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722M24/EN40B - 3% Chromium–Molybdenum Nitriding Steel

Surcharge

The surcharge information provided is a guide to market scrap and alloy surcharges and is an averaged value taken from various suppliers’ surcharge mechanisms and isn’t therefore necessarily the surcharge applied to all material supplied. Please contact us if you want any further information.

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£312.70 per tonne

Surcharge Price History for 722M24/EN40B

OCT 19 JAN 20 APR 20 JUL 20 TODAY
£378.90 £321.31 £354.21 £352.65 £312.70

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.

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PRODUCTION METHOD

Rolled or Forged

FINISHES

Black Bar or Bright Bar