722M24 / EN40B
3% Chromium–Molybdenum Nitriding Steel
Surcharge
£1126 per tonne
Surcharge Price History for 722M24 / EN40B
| FEB 22 | MAY 22 | AUG 22 | NOV 22 | TODAY |
|---|---|---|---|---|
| £836.46 | £1,259.49 | £1,163.65 | £927.55 | £1,126.00 |
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.