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Armoloy® TDC and XADC-Armoloy® Frequently Asked Questions Is the hardness of the substrate an issue? Generally, the harder the base metal, the more effective the Armoloy® TDC and XADC-Armoloy® coatings. Common Rc hardness for tool steels to be coated is 45-55 Rc. Armoloy can also coat gas- or ion-nitrided surfaces, though it is important to indicate that this process has occurred before the Armoloy® coating process begins. In the case of copper alloys, where hardness cannot be dramatically improved, the coatings still can provide protection against abrasive wear, without inhibiting copper's thermal diffusion properties. What about textured surfaces? The Armoloy coatings, due to their thinness, will not "fill in" a textured surface; they will evenly coat the texture to which they are applied. They will as well impart increased wear resistance to the textured surface, allowing the tool to perform longer and more efficiently without expensive re-texturing. Can tools of different types/dimensions be coated in the same lot? Yes. Armoloy® fixtures each tool separately according to its design. It is not a "batch" or "barrel" process. Armoloy® can issue a "processing charge" that would cover the entire lot, including the various set-ups/tooling requirements necessary to accommodate the different part geometries involved. Page 1 | Page 2 | Page 3