316 and 317 stainless steels are molybdenum-containing stainless steels, of which the molybdenum content in 317 stainless steel is slightly better than 316 stainless steel. Because of the molybdenum in the steel, the overall performance of the steel is superior to 310 and 304 stainless steels. Under high temperature conditions, 316 stainless steel has a wide range of uses when the sulfuric acid concentration is lower than 15% and higher than 85%.
316 stainless steel also has good chloride attack properties, so it is often used in the marine environment.
316L stainless steel has a maximum carbon content of 0.03 and can be used in applications where annealing cannot be performed after welding and maximum corrosion resistance is required.
Corrosion resistance Corrosion resistance is superior to 304 stainless steel. It has good corrosion resistance in the production of pulp and paper. And 316 stainless steel is also resistant to the erosion of the ocean and the aggressive industrial atmosphere.
Heat resistance 316 stainless steel has good oxidation resistance under intermittent use up to 1600 degrees and continuous use below 1700 degrees. In the range of 800-1575 degrees, 316 stainless steel is preferably not continuously applied, but the stainless steel has good heat resistance when 316 stainless steel is continuously used outside this temperature range. The resistance to carbide precipitation of 316L stainless steel is better than that of 316 stainless steel, and the above temperature range can be used.
Heat Treatment Annealing is performed in the temperature range of 1850-2050C, followed by rapid annealing, and then rapidly cooled. 316 stainless steel can not be hardened by heat treatment.
Welding 316 stainless steel has good welding performance. All standard welding methods can be used for welding. Welding can be based on the use of 316Cb, 316L or 309Cb stainless steel filler rods or electrodes for welding. In order to obtain the best corrosion resistance, the welded section of 316 stainless steel needs post-weld annealing. If 316L stainless steel is used, post-weld annealing is not required.
Typical uses Pulp and paper machine equipment heat exchangers, dyeing equipment, film processing equipment, pipelines, materials for the exterior of buildings in coastal areas.