Postalloy® CF-27

Postalloy® CF-27 is a high hardness, chromium-free metal-cored hardfacing overlay designed for high abrasion applications with minimal impact. The unique wear properties are derived from a network of Boron, Niobium, Vanadium and Molybdenum Carbides in a hard carbon/iron matrix. Abrasive wear properties are superior to traditional chromium carbide alloys of similar hardness - 60 to 65Rc. This alloy has excellent weldability without exposing the welder to harmful hexavalent chromium fumes with a very smooth bead with no slag to remove. Deposit efficiency over 90%. CF27 may be used with any common shielding gas or open-arc.

Caution - Even though most of the welding fume comes from the electrode/filler wire, some of the fume does come from the base metal being welded. Therefore, the base material should be checked for chromium content.