AISI 316 / UNS S31600 / DIN 1.4401 Stainless Steel Plate

AISI 316 and AISI 316L are the international designations for the following grades:

The AISI 316 and AISI 316L describes stainless, austenitic chromium-nickel-molybdenum steels which have good resistance in non-oxidizing acids and chlorine-containing media. Due to the chemical composition, the material 316 and the material 316L are inherently corrosion resistant metal alloys.

 

AISI 316L differs from AISI 316 in its lower carbon content. The"L"stands for"low carbon"in this case.

 

The materials 1.4401 and 1.4404, which belong to the V4A Group, are easy to machine and weld. With the addition of 2-2.5% molybdenum, both grades show good corrosion resistance even in the presence of chlorides. The main areas of application of these AISI standards are found in the construction, chemical and pharmaceutical industries. Both the use in the low temperature range is possible, as well as the application up to 550°C.

 

Material grade 1.4435, also called 316L stainless steel, is described as a non-magnetic steel. The Delta ferrite content is max. 0.5%. It can be used in accordance with the Pressure Equipment guidelines 97/23 EG. The areas of application of this material are in the petroleum / petrochemical or optical industries, etc.

 

 

 

Materials in grade 1.4404/1.4401 are suitable for use in the environment of phosphoric, nitric, citric, lactic, formic, acetic acids, in the presence of alkalis - hydroxides, and salts - nitrates, chlorides, fluorides, acetates and sulphates. The grade also shows resistance to the marine environment and salts. The steel is not resistant to chloric acid, orthophosphoric acid, formic acid in high concentrations, sulphuric acid and hydrochloric acid.

 

316 and 316L products are characterized by resistance to high temperatures, high plasticity, ductility, and relatively good ductility. They are suitable for compression, cold and tensile hardening to produce springs and spring elements from strips or wires. The materials show non-magnetic properties in soft condition, relatively good mechanical properties in cryogenic temperatures and good weldability not requiring additional heat treatment processes. It is also important to note the relatively low mechanical properties, which are not conducive to mechanical applications, and the difficult machinability of steel.

 

Steel 316/L as well as 1.4404/1.4401 is widely used in the oil, nitrogen, shipbuilding, chemical, construction, refinery, medical, cellulose, cryogenic, automotive, as well as food processing industries in the form of plates, tapes, pipes, sleeves, fittings, forgings, bars, for parts of gas installations, heat exchangers, railings, ship equipment and public transport vehicles, valves, tanks, pumps, radiators, food processing machines in dairy, catering, meat plants, vegetable and fruit processing plants, distillers, chimneys, steam systems, pipelines, pressure equipment, crystallizers, cisterns, silos, swimming pools, boiler parts, condensers, autoclaves, reactors or condensing equipment.