MP3115 / MX3115

Grade Features

Through surface treatment and optimisation of the cermet structure, suppression of dimensional changes of the workpiece and persistence of the finished surface are achieved

Cermet Grade for Turning

Within the cermet grade range, suitable for high‑speed cutting at vc = 150–350 m/min.

MP3115

Surface‑Smoothened PVD Coating

Suppression of droplet‑derived defects during coating deposition enhances surface smoothness, preventing reactions and adhesion with the workpiece material and maintaining a high‑quality finished surface.

Alloy steel S45C: Workpiece Dimensional Change and Surface Roughness Comparison

Compared with conventional products, surface roughness is improved by 1 μm (Rz) while initial workpiece dimensional change is reduced.

MX3115

Extremely Hard Surface, Tough Core Cermet Grade

For stable finishing operations, surface hardness is further enhanced, while internal structure is optimised for toughness.

Prevents Sudden Cutting Edge Failure

Oxide protective layer formed during cutting suppresses oxidation‑related wear, while a dedicated binder phase inhibits crack growth and improves chipping resistance.

Cutting Performance

Alloy Steel S45C: Comparison of Workpiece Surface Appearance in Facing Wet Cutting

Even at the centre of the low‑speed cutting region, smooth, high‑hardness surface suppresses adhesion and maintains high‑quality finished surface.

Alloy steel S45C: Workpiece Dimensional Change and Surface Roughness Comparison

Even without coating, cermet shows small workpiece dimensional change and good surface roughness.

Customer Application Example

Courtesy of Matsumoto Kosan Co., Ltd.

Front Turning

In machining of free‑cutting steel SUM22, tool compensation was reduced to two‑thirds.

Reduced chipping and wear in machining of carbon steel S43S2.