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GWS Coatings 101: End Mills Beat the Heat With nACo®

Welcome back to our series on the different types of coatings we offer to make your cutting tools provide better performance. Cutting tool coatings are designed to improve wear properties via higher hardness, increased thermal stability and reduced coefficients of friction. In our first two posts, we discussed the properties and uses of AlTiN and ALCRO-MAX.

AlTiN is a general-purpose coating with high aluminum content. Applied to the tool with a coating thickness between 1-4 microns, it provides excellent heat and oxidation resistance for application in a broad range of materials.

ALCRO-MAX is a super-strong coating has been engineered to give an optimum balance between the toughness of the core layer and the abrasion resistance of the top nano-layer. An upgrade from AlTiN for materials like stainless steel and Titanium.

If you do a lot of hard milling or machining of Nickel Alloys, you’re going to be very interested in what our next coating can do for you. Meet nACo.

Tough. Heat Resistant. Long Lasting.

A nanocomposite coating based of Titanium and silicon, nACo coating is ideal for increasing performance and extending tool life (up to 30%) versus more standard coatings like AlTiN. This super-hard coating can be found in any industry that needs an end mill that has a tough core with extreme wear and high heat resistance for milling hard materials. Examples include die mold (D2, A2 tool steels), aerospace (Inconel®), and military (4140 hardened alloy steels).

Offered standard on our Hurrimill 1030 Series of high-performance end mills in 4, 5 or 7 flutes, nACo is one of many in-house coating technologies GWS applies to both standard and custom tools.

cutting tool coatings: nACo

Why It Works So Well

With a coating thickness of 1-4 µm, nACo offers maximum protection against heat and tool wear. It resists heat up to 2,192°F before it starts to oxidize and break down. It’s also harder than ALTiN or AlCrN – the top layer has an extremely high nanohardness number (41).

Efficiency is also enhanced by a low coefficient of friction for less resistance.

nACo is applied to our tools using the Platit® high performance physical vapor deposition (PVD) units in our coating facility. Keeping the process in-house gives us total control on quality control and turnaround time. In fact, demand is so strong for our coating services, we have expanded our operations by recently opening a new state-of-the-art coating facility in our Springfield, Massachusetts location.

Contact us to see if nACo or any of our other coating options will help you maximize performance. Remember, if you don’t see what you need in the catalog, we specialize in custom engineering the right tool for your application.

nACo is a registered trademark of Platit, Inc.