Nitriding Steels
1.8509 Standards DIN 41CrAlMo7-10
Chemical Composition
Applications
Structural parts with high surface hardness like piston rods, extruders, cylinders, shafts, straightening tools, measuring tools, etc.
Heat Treatment Properties
- Stress Relief °C
- - Soft Annealing °C
650-700 - Delivery Hardness
- - Tempering
580-700 °C - Nitriding
480-570 °C
Hardness
- Austenitizing °C
870-930 - Cooling
Vacuum, Fluid Bed, Oil
Hardness After Hardening
- HRC
-
| Tempering °C | 100 | 200 | 300 | 400 | 500 |
| HRC | 61 | 59 | - | - | - |
| (Hardened tempered) Size Ø mm |
Yield Strength N/mm2 | Tensile Strength N/mm2 | Min. Elongation | Impact strength Joule/min. |
Surface hardness after nitration (HV) |
| 16≤d≤40 | 750 | 950-1150 | 11 | 25 | 900-1000 |
| 40≤d≤100 | 720 | 900-1100 | 13 | 25 | 900-1000 |
| 100≤d≤160 | 670 | 850-1050 | 14 | 30 | 900-1000 |
| 160≤d≤250 | 625 | 800-1100 | 15 | 30 | 900-1000 |
Other Nitriding Steels
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