This popular metallic gold color PVD coating is extremely hard with an ideal combination of hardness and toughness. TiN coating is ideal for improved lubricity and faster speeds and feeds.
Titanium Nitride is a very hard, thin film coating that is applied primarily to precision metal parts. TiN coating is also the most common PVD hard coating in use today. TiN has the ideal combination of hardness, toughness, adhesion and inertness. The thin coating has little dimensional impact, and is perfect for cutting tools with tight tolerances.
TiN is typically applied to cutting tools to improve tool life. This coating can extend tool life when compared to uncoated tooling. The thin coating is environmentally safe, and is applied using a physical vapor deposition vacuum system.
The advantage of using a coating with cutting tools usually has to do with heat displacement. The coating protects the tool from the high heat involved with most machining applications. Although rotary broaching is a relatively low heat operation, the hardness contributes to decreased downtime and longer tool life.
The TiN coating part number code for Polygon’s rotary broaches is the letter ‘E’. For example, if you would like to order a 1/4″ hex broach with 1/2″ shank and TiN coating, you would add the letter ‘E’ to the end of the part number H02525B. The new part number would be H02525BE.