Generally smelted in an electric furnace, alloy steel can be divided into alloy structural steel, spring steel, bearing steel, alloy tool steel, and high-speed tool steel

Quenched and tempered steel

1. Medium carbon alloy steel with low alloying element content; 2. High strength; 3. Used for high-temperature bolt, nut material, etc.

spring steel

1. The carbon content is higher than that of quenched and tempered steel; 2. After tempering treatment, the strength is high and the fatigue resistance is high; 3. Used for spring materials.

Rolling bearing steel

1. High carbon alloy steel with high alloy content; 2. High and uniform hardness and wear resistance; 3. Used for rolling bearings.

Alloy tool steel, also known as weighing tool steel

1. High carbon alloy steel with low alloying element content; 2. High hardness and wear resistance, good processing performance, and good stability; 3. Used for measuring tool materials.

Special performance steel

1. Low carbon high alloy steel; 2. Good corrosion resistance; 3. Used for corrosion resistance, some can be used as heat-resistant materials.

Heat resistant steel

1. Low carbon high alloy steel; 2. Good heat resistance; 3. Used as heat-resistant materials, some can be used as corrosion-resistant materials.

Low temperature steel

1. Low carbon alloy steel, with varying degrees of alloy elements depending on its low temperature resistance; 2. Good low-temperature resistance; 3. Special steel for low-temperature materials is nickel steel.