SUS 316L is an austenitic stainless steel within the Japanese standard system. It has the same composition as 316L stainless steel, featuring low carbon (carbon content ≤ 0.03%), and alloy elements such as chromium, nickel, and molybdenum. Produced in accordance with Japanese industrial standards, it has a clear positioning in terms of performance and application adaptability.
In terms of characteristics, corrosion resistance is the core advantage. The low - carbon design, combined with the molybdenum element, makes its intergranular corrosion resistance outstanding. After welding or in high - temperature service environments, it can still effectively resist the risk of intergranular corrosion. It has good tolerance to chloride ion environments. In chlorine - containing scenarios such as marine and chemical industries, the probability of pitting and crevice corrosion is low. At the same time, it has the typical characteristics of austenitic stainless steel, with excellent plasticity and toughness, and is easy to be formed by processes such as stamping and bending. The mechanical properties are stable in low - temperature environments, and it is not prone to embrittlement and failure.
The processing flow starts with raw material smelting. High - quality ores or scrap steel are carefully selected and smelted in an electric furnace, with precise control of components to ensure that the contents of elements such as chromium, nickel, and molybdenum meet the standards, and the low - carbon characteristics are strictly followed. In the hot - rolling process, the steel structure is refined by high - temperature rolling, laying a solid foundation for subsequent processing; cold rolling further improves the dimensional accuracy and surface finish, meeting the needs of precision manufacturing. Solution treatment is the key. After heating at 1010 - 1150 °C and rapid cooling, the alloy elements are fully and uniformly distributed, enhancing corrosion resistance and mechanical properties. Welding can use common processes such as argon arc welding. Due to the low - carbon advantage, the welded joint has high quality and good corrosion resistance; during cutting, suitable tools need to be selected to deal with the toughness of the material and ensure processing accuracy; the surface can also be polished and passivated to enhance protection and aesthetics.
The application focuses on fields with strict requirements for corrosion resistance and welding quality. In marine engineering, seawater desalination equipment and the auxiliary structures of offshore platforms rely on it to resist long - term seawater erosion; in the chemical industry, high - purity reagent delivery pipelines and corrosion - resistant reaction kettles use it to cope with complex chemical media; in the food and pharmaceutical fields, the equipment in aseptic workshops and drug storage containers rely on its hygienic - grade corrosion resistance to ensure product safety; in high - end kitchenware and building decoration, such as villa swimming pool facilities and the curtain walls of star - rated hotels, it is used to achieve the unity of aesthetics and durability, becoming a key material trusted by multiple industries.
