316 And 316L stainless steel:
316 And 317 stainless steel (see below for the properties of 317 stainless steel) are molybdenum-containing stainless steels. The molybdenum content in 317 stainless steel is slightly higher than that in 316 stainless steel. Because the steel contains molybdenum, the overall performance of this steel is better than that of 310 and 304 stainless steel. Under high temperature conditions, when the concentration of sulfuric acid is lower than 15% and higher than 85%, 316 stainless steel has a wide range of uses.
316 stainless steel also has good resistance to chloride corrosion, so it is usually used in marine environments. 316L stainless steel has a maximum carbon content of 0.03 and can be used in applications where annealing after welding cannot be performed and where maximum corrosion resistance is required.
Corrosion resistance:
The corrosion resistance is better than that of 304 stainless steel, and it has good corrosion resistance in the production process of pulp and paper. And 316 stainless steel is also resistant to erosion by marine and aggressive industrial atmospheres.
Heat resistance:
316 Stainless steel has good oxidation resistance in intermittent use below 1600 degrees and continuous use below 1700 degrees. In the temperature range of 800-1575 degrees, it is best not to use 316 stainless steel continuously, but when 316 stainless steel is used continuously outside this temperature range, the stainless steel has good heat resistance. The carbide precipitation resistance of 316L stainless steel is better than that of 316 stainless steel, and the above temperature range can be used.
Heat treatment:
Annealed in the temperature range of 1850-2050 degrees, then rapidly annealed, and then rapidly cooled. 316 stainless steel cannot be hardened by overheating.
Welding:
316 Stainless steel has good welding performance. All standard welding methods can be used for welding. When welding, 316Cb, 316L or 309Cb stainless steel filler rods or electrodes can be used for welding according to the application. In order to obtain the best corrosion resistance, the welded section of 316 stainless steel needs to be subjected to post-weld annealing treatment. Post weld annealing is not required if 316L stainless steel is used.
Typical uses:
Pulp and paper equipment heat exchangers, dyeing equipment, film processing equipment, pipelines, exterior materials for buildings in coastal areas.
