Finish

• Black oxide improves lubricity, resists corrosion, and resists flaking. It helps prevent buildup and welding of material on the tool’s cutting edge when machining iron and steel.
• Chromium nitride (CrN) is a hard, low friction coating that improves edge sharpness and helps prevent buildup of material on the tool’s cutting edge. It is suitable for machining aluminum, copper, and steel.
• Diamond-like, also called amorphous diamond, is a thin layer of diamond applied to the substrate in non-crystalline form. It reduces friction and abrasion while offering higher hardness properties than TiAlN and TiN. It is suitable for machining aluminum alloys and stainless steel.
• Gold oxide is a low-temperature heat treatment that reduces grinding stress within the tool.
• Hard coat anodized with PTFE (polytetrafluoroethylene) is a hard finish with low friction, suited for working with difficult-to-machine materials like stainless steel, which form long chips.
• Nitride offers increased durability and abrasion resistance, and retards the tendency of softer materials to load or cling onto the tool. It is suitable for machining abrasive materials such as cast iron.
• Nitride/black oxide combines all the benefits of nitride, including increased durability, with the lubricity of black oxide.
• Titanium aluminum nitride (TiAlN) resists heat better than TiN, increasing tool life and performance. It also offers increased hardness compared to TiN and, at high cutting speeds, may reduce the need for lubricants based on the application. It is suitable for machining titanium, nickel-based alloys, cast iron, and stainless steel.
• Titanium nitride (TiN) combines hardness and low friction to extend cutting tool life and permit faster cutting speeds than uncoated tools. It is suitable for machining alloy steel, carbon steel, plastic, and aluminum.
• Uncoated (bright) tools have no finish or coating. They are a common choice for general-use applications.