Red hardness
Jan 28, 2019
Once people choose machine knife material including W and V, then material must have good performance due to those elements can achieve high red hardness. A8 material is a good example.
Red hardness refers to the ability of a material to maintain its hardness after being held at a certain temperature for a certain period of time.
In order to ensure the red hardness of high speed steel, it is necessary to add carbide forming elements such as W, Mo, Cr, and V.
