722M24 / EN40B
3% Chromium–Molybdenum Nitriding Steel
£1126 per tonne
Surcharge Price History for 722M24 / EN40B
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Rolled or Forged
Black Bar or Bright Bar
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.
32mm - 860mm Dia
Typical applications of 722M24 grade steel
- Aircraft applications
- Plastic moulds
- Compressor discs
722M24 steel is still often referred to as EN40B steel - its equivalent grade under the previous BS 970: 1955 standard.