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

See also

APZ10

Tool steels

XDBD

Martensitic stainless steels

XD16N

Martensitic stainless steels