What is the difference between tempered steel shot and ordinary steel?

　　1. Material composition and stability

　　Tempered steel shot: usually uses high-quality steel as raw material, and is refined and formed into spherical particles after vacuum induction melting and atomization. Therefore, the material composition of tempered steel shot is more stable, uniform, and rich in iron.

　　Ordinary steel: There are no strict restrictions on material selection, and it is often made of low-carbon steel, alloy steel and other materials. Its material composition may vary depending on the production batch and process.

　　2. Production process and difficulty

　　Tempered steel shot: It is manufactured using vacuum induction melting technology and air flow atomization technology. The production process is relatively complex and requires high-precision equipment and excellent production skills. Therefore, its production difficulty is relatively large.

　　Ordinary steel: The blank steel is selected and rolled into a spherical or other shape through multiple passes. The production process is simple and does not require too high production requirements.

　　3. Physical properties

　　Hardness: Tempered steel shot has high precision during the manufacturing process, smooth and uniform surface, and highly adjustable hardness, which can usually reach 50-70 HRC. The hardness of general steel is relatively low, usually between 40-50 HRC (there are also claims that the hardness of general steel shots can generally reach 58-65 HRC, but this value may vary depending on the specific material and process).

　　Wear resistance: Because the hardness of tempered steel shots is high and the surface is smooth, they have better wear resistance. The wear resistance of general steel is relatively low.

　　IV. Application and scope of application

　　Application: Tempered steel shots can clean the surface of parts by self-locking and grinding the surface, which can more effectively remove old paint films, rust and attachments. At the same time, its surface is smoother, avoiding secondary damage to the treated parts due to rough surface. General steel may affect the finishing effect due to lack of hardness or rough surface.

　　Application scope: Tempered steel shots are widely used in casting, forging, heat treatment, sandblasting and finishing industries due to their excellent performance, especially in places where high impact force and fast finishing are required. General steel is still widely used in general machinery manufacturing, building structures and other fields due to its low price and easy processing.