GRADE FAMILY · 6 GRADES
Nitriding Steel
Nitriding steels contain aluminium, chromium, molybdenum or vanadium, which form hard nitrides at the surface during nitriding. They give a very hard, wear-resistant case with minimal distortion.
When to Choose Nitriding Steel
- Very high surface hardness is needed with low distortion
- The part is a crankshaft, cylinder liner, screw or precision gear
- Finished dimensions must hold after surface treatment
- Wear and fatigue resistance are both critical
SUPPLIED AS
Nitriding Steel Grades and Equivalents
Nearest equivalents in each standard. Grades with a page link to full chemistry, properties and match ratings.
| Grade | EN | W.Nr. | AISI / SAE | JIS | IS | GB | Supplied as |
|---|---|---|---|---|---|---|---|
| EN40C | 31CrMoV9 | 1.8519 | – | – | – | – | Round Bars · Bright Bars · Forged Bars · Forgings & Special Components |
| EN40B | 31CrMo12 | 1.8515 | – | – | – | – | Round Bars · Bright Bars · Forged Bars · Forgings & Special Components |
| EN41B | 41CrAlMo7-10 | 1.8509 | – | SACM645 | – | 38CrMoAl | Round Bars · Bright Bars · Forged Bars · Forgings & Special Components |
| EN41A | 34CrAlMo5-10 | – | – | – | – | – | Round Bars · Bright Bars · Forged Bars · Shafts |
| 34CrAlMo5-10 | 34CrAlMo5-10 | 1.8507 | – | – | – | – | Round Bars · Bright Bars · Forged Bars · Forgings & Special Components |
| 34CrAlNi7-10 | 34CrAlNi7-10 | 1.8550 | – | – | – | – | Round Bars · Bright Bars · Forged Bars · Forgings & Special Components |
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OneKaizen sources from mills across India, Europe and Asia. Send the designation, standard, form, size and quantity and we will confirm availability and the nearest equivalent.