Tools for titanium with twice the expertise

18 August 2021

Tools for titanium with twice the expertise

Walter has now launched its MD377 Supreme and MC377 Advance solid carbide milling cutters for the effective machining of titanium. Developed as high-end specialist tools for the aviation, motor sport and medical industries, the new arrivals are universal tools that are suitable for roughing, semi-finishing and finishing operations.

Incorporating a corner radius and central through coolant supply, the new MD377 utilises Walter’s proven HPC Ti40 titanium geometry and new WTZ coating that makes it perfect for full slotting up to 1XD, ramping, shoulder milling and plunging. Also, the MD377 Supreme is suitable for dynamic milling processes. In comparison, the MC377 has a centre cutting geometry without the through coolant supply.

The MD377 Supreme has been developed for the aviation and aerospace industry and is therefore precisely matched to its requirements. The titanium specialist with a central coolant supply represents a benchmark when it comes to machining engine and structural components. It allows for tight tolerance machining and it stands out thanks to its extremely high metal removal rates. This high material removal rate is a credit to the optimised cutting geometry and the five cutting edges that can improve productivity levels and reduce vibration credit to its differential pitch design.

The MD377 Supreme is available with a range of corner radii in diameters of 6, 8, 10, 12, 16, 20 and 25mm with a flute length of 13mm on the 6mm diameter tool ranging up to 45mm on the 25mm tool with each tool designed with a back radius into a necked diameter for clearance when machining deep cavities.

In contrast, the MC377 is a four-flute titanium end mill that is also suitable for ISO P and M material designations. This diversity is credit to a tough AlCrN coating that works with Walter’s WK40EA substrate that makes the MC377 suitable for steel, stainless as well as titanium alloys. With regards to the MD377, the tool life and performance is assured with the latest Walter-exclusive AlTiN+ZrN (WTZ) coating with HIPIMS technology.

The impressive new MC377 end mill without corner radii is available in diameters of 2, 3, 4, 5, 6, 8, 10 and 12mm whilst the MC377 with corner radii is offered with a 2, 3, 4, 5, 6, 8, 10, 12, 16, 20 and 25mm diameter with the 2mm tool having a 3-flute geometry and all other diameters having 4-flutes. Depending upon the tool diameter, each MC377 tool is available with a choice of corner radii from 0.2 to 4mm. The series has a flute length that ranges from 6mm on the 2mm diameter tool through to 45mm on the 25mm diameter tool. The MC377 cutter range is also designed with the back radius into a necked diameter feature for clearance.

Both tools are the perfect partners for the machining of small parts, engine components or structural components as well as additively manufactured components in the aerospace, motor sport and medical technology sectors. From a process security perspective, both the MC377 and MD377 are available with plain cylindrical shank across all diameters but from 16mm to 25mm diameter there is also the option of a cylindrical shank with clamping flat to DIN6535 HB to prevent tool pull out and increase stability. In addition to the standard ranges with cutting lengths up to 2XD, Walter also offers custom-designed tools via the Xpress service with short delivery times.


In the couple of years that we have been working with Pulse-PR Ltd, we have found the advice, guidance and service to be second-to-none. Pulse-PR has a wealth of industry knowledge and an uncanny knack of understanding our products, which maximises our exposure in-print and on-line

Denis Houghton, Managing Director, Advanced Carbide Tooling