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722M24 - 3% Chromium–Molybdenum Nitriding Steel

Surcharge

Both Scrap and most alloys saw a small increase going into April, meaning surcharges for the majority of grades increased slightly.

Nickel has been rising steadily (albeit not significantly) in recent weeks and therefore we would expect to see this filter through to the surcharges in the coming weeks.

Surcharge information as listed via Liberty Speciality Steels where possible, other based on mean chemical analysis for the given grade.

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£459.01 per tonne

Surcharge Price History for 722M24

APR 18 JUL 18 OCT 18 JAN 19 TODAY
£463.99 £482.09 £488.06 £507.36 £459.01

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.

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