this post introduces the difference between 201 and 304 stainless steel. Strong Metal's heat treatment equipment are widely used in the stainless steel industry for annealing process of strip coil.

Stainless steels are generally heat-treated based on the stainless steel type and reasons for carrying out the treatment. Heat treatment methods, such as stress relieving, hardening and annealing, strengthen the ductility and corrosion resistance properties of the metal that is modified during fabrication, or generate hard structures capable of tolerating abrasion and high mechanical stresses.

Commonly used gear materials are various grades of high-quality carbon structural steel, alloy structural steel, cast steel, cast iron, and non-metallic materials. Generally use forging or rolled steel. When the size of the gear structure is large and the wheel blank is not easy to forge, cast steel can be used; for open low-speed transmission, gray cast iron or ductile iron can be used. Steels with better comprehensive performance should be selected; high-speed gears are prone to pitting on the tooth surface, and materials with high tooth surface hardness should be selected; gears subject to impact load should be selected from materials with good toughness. For high-speed, light-load and low-noise gear transmissions, non-metallic materials, such as cloth bakelite, nylon, etc. can also be used. Commonly used gear materials and their mechanical properties are listed in the table below.

Various heat treatment methods for carburizing and carbonitriding gears