Heat Treatment of 410 Martensitic Stainless Steel Bar
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The heat treatment of 410 stainless steel rods mainly includes two processes: quenching and tempering.
Quenching treatment
The quenching treatment of 410 stainless steel rods is to heat the material to 1000-1050°C and keep it warm for 15-30 minutes to ensure uniform heating inside the material. Rapid cooling is required after quenching, and the commonly used quenching medium is oil. Quenching treatment can significantly increase the hardness of 410 stainless steel, but may increase the brittleness of the material.
Tempering
Tempering treatment is to adjust the hardness and toughness of the material. The tempering temperature is usually between 700-850°C, and after tempering the material can reach a higher hardness range of 201-255 Brinell hardness. Tempering can improve the toughness of the material, giving it good corrosion resistance and strength in mild environments.
Effect of heat treatment on performance
Heat treatment has a significant impact on the properties of 410 stainless steel rods. After quenching and tempering, 410 stainless steel has good strength and excellent toughness, making it suitable for a variety of industrial applications. In addition, heat treatment can also improve the mechanical properties such as tensile strength, creep strength and fatigue strength of the material.
The corrosion resistance of 410 is better than grade 416, but lower than grade 431. Also lower than most 400 Series ferritic stainless steels and all 300 Series austenitic stainless steels, it has its best corrosion resistance in the hardened and tempered conditions and is therefore not recommended for use in the annealed condition.
