Martensitic stainless steels
X15TN
Spécifications
EU
X40CrMoVN16-2
USA
UNS: S42025
WL
1.4123
Composition
C
0.4
Cr
15.5
Mo
2
V
0.3
N
0.2
Applications
• Friction components.
• Cutting blades in corrosive environments.
• Surgical instruments.
• Mould components for synthetic material processing.
Characteristics
• Martensitic stainless steel combining remarkable corrosion resistance, a high level of hardness, very good abrasion resistance and excellent cutting properties.
• Treatments including tempering at 180°C are recommended to obtain maximum resistance to corrosion. Treatments including double tempering at 500°C are used for hot applications or in case of surface treatments involving a rise in temperature of up to 500°C.
• From some applications the steel may be core treated to obtain a strength of 900 to 1200N/mm2 with the aim of subsequently undergoing induction surface hardening to obtain 59HRC.
Mechanical properties
| Heat treatment |
Hardness HRC |
|---|---|
| T + Rv 500°C | 57 |
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 |