High-Performance Contour Machining and Surface Quality
The TCMT-MF RT255M turning insert proves to be a well-thought-out solution for demanding finishing tasks in stainless steel machining. With its wear-resistant M20-M30 carbide substrate and high-quality PVD coating, this cutting tool supports a long and predictable tool life. The positive triangular shape (TCMT) combined with the MF geometry facilitates reduced cutting forces, promoting accurate dimensional tolerances, especially when machining complex contours or slender workpieces.
Suitable materials

Technical data
- Insert shape: TCMT
- Operation type: Finishing
- Cutting conditions: Continuous and light interrupted cut
- Main application: Stainless steel
- Grade: RT255M (PVD-coated M20-M30 carbide)
- Packaging unit: 10 pieces
Dimensions of TCMT-MF RT255M
|
Item Nr. |
r |
L |
I.C |
S |
d |
| TCMT 110204-MF RT255M |
1777351 |
0,4 |
11 |
6,35 |
2,38 |
2,8 |
| TCMT 110208-MF RT255M |
1777352 |
0,8 |
11 |
6,35 |
2,38 |
2,8 |
| TCMT 16T304-MF RT255M |
1777353 |
0,4 |
16,5 |
9,525 |
3,97 |
4,4 |
| TCMT 16T308-MF RT255M |
1777354 |
0,8 |
16,5 |
9,525 |
3,97 |
4,4 |
Cutting data
|
Stainless Steel |
|
Vc (m/min) |
f (mm/rev.) |
ap (mm) |
| TCMT 110204-MF RT255M |
100-200 |
0,07-0,17 |
0,2-2 |
| TCMT 110208-MF RT255M |
100-200 |
0,07-0,17 |
0,3-2 |
| TCMT 16T304-MF RT255M |
100-200 |
0,06-0,2 |
0,1-2 |
| TCMT 16T308-MF RT255M |
100-200 |
0,08-0,25 |
0,15-2 |
Applications
Thanks to its dedicated design for stainless steel, the TCMT-MF RT255M is an excellent choice for mechanical engineering and equipment manufacturing. It stands out in fine turning operations where high surface quality and tight tolerances are essential. Its versatile application range includes finishing external and internal contours during continuous turning as well as light interrupted cuts.
Special features
A key advantage of this insert is the tailored combination of a tough carbide core and a specialized PVD coating. This provides high thermal resistance and minimizes built-up edge formation, which is highly beneficial when machining stainless alloys. The positive cutting edge lowers cutting pressure, establishing good conditions for low-vibration operations and reliable manufacturing processes.