Maraging steels
ML340
Spécifications
EU
X23NiCoCrMoAl13-6-3
Composition
C
0.23
Ni
13
Cr
3.25
Mo
1.5
V
0.25
Co
6
Al
1.5
Applications
• Aerospace applications including shafts, heavily loaded parts, fasteners.
• Nitriding parts.
Characteristics
• Duplex hardening type steel, vacuum melted and consumable electrode remelted grade.
• Very high ultimate and yield strength steel with high toughness.
• Surface hardening by nitriding is possible.
Mechanical properties
| Heat treatment |
UTS (N/mm²) |
0,2% YS (N/mm²) |
A (%) |
KV (J) |
|---|---|---|---|---|
| H + V 495°C | 2220 | 1900 | 10 | 24 |
Key to heat treatment symbols
| Solution treated | H | Annealed | R |
|---|---|---|---|
| Thermo-mechanical treatment | TM | Quenched and tempered | T+RV |
| Sub-zero treatment | F | Solution treated and aged | H+V |