Ball mill steel ball material has the following two main materials:

1, high manganese steel: High manganese steel is commonly used in ball mills. This material has good toughness, good manufacturability and low price. In addition, its main feature is that when subjected to strong impact or contact stress, the surface layer can quickly form work hardening, and the hardening index is 5-7 times higher than other materials, so it has good durability when used.

2. Low-carbon alloy steel ball: Low-carbon alloy steel ball has good toughness and low price. Under the same working conditions, its service life is more than 1 times longer than that of low chromium cast balls.

Low carbon alloy steel balls and high manganese steel balls have no magnetism, so the ball mill has no magnetism.

There are two kinds of wear-resistant steel balls for ball mills:

One is white cast iron with chromium as the main alloying element, which is called chromium alloy cast iron for short, and the casting grinding ball made of chromium alloy cast iron is called chromium alloy cast iron grinding ball;

On the other hand, the cast grinding balls made of ductile iron are called ductile iron grinding balls, and the matrix structure obtained by heat treatment is mainly bainite ductile iron grinding balls.