Do LENOX bi-metal blades contain Cobalt? Mike October 30, 2020 05:33 Updated Yes, LENOX blades are made out of M42 tool steel which contains Cobalt as one of the elements that makes up the steel. Related articles How much tension can a bi-metal blade handle? What grades are the carbide blades available in? What is the finest tooth pitch for carbide band saw blade? Does LENOX offer a welding fluid? Can you use metal cutting carbide blades for wood cutting? Comments 0 comments Please sign in to leave a comment.