Contains wear-resistant chromium borides and carbides. Between Colmonoy Nos. 6 and 5 in chemistry and hardness. Better ductility and impact resistance than No. 6. For plastic extrusion screws, shafts, sleeves. Finished with carbide tools and grinding. Method of Application: Oxyacetylene, DC Electric Arc, GTAW, Spraywelder Information provided by Wall Colmonoy Corporation. |