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It is commonly used in chemical and petrochemical industry, in food processing, pharmaceutical equipment, medical devices, jewellery, luxury watches (especially diver's watches), in potable water piping, [3] [4] wastewater treatment, [5] in marine applications [6] and architectural applications near the seashore or in urban areas.
The SAE steel grades system is a standard alloy numbering system (SAE J1086 – Numbering Metals and Alloys) for steel grades maintained by SAE International.. In the 1930s and 1940s, the American Iron and Steel Institute (AISI) and SAE were both involved in efforts to standardize such a numbering system for steels.
Sulfuric acid is one of the most-produced industrial chemicals. At room temperature, type 304 stainless steel is only resistant to 3% acid, while type 316 is resistant to 3% acid up to 50 °C (120 °F) and 20% acid at room temperature. Thus type 304 SS is rarely used in contact with sulfuric acid.
SS316 may refer to: USS Barbel, a Balao-class submarine; Grade 316 (stainless steel), a family of SAE marine steel grade This page was last edited on 30 December ...
0.3 1420 Sulphur is added to improve machinability. 1.4541 X6CrNiTi18-10 321 < 0.08 18 NS: 10.5 Ti: 5×C ≤ 0.70 1425 Same as grade 1.4301 but not susceptible to intergranular corrosion thanks to Ti which "traps" C. 1.4401 X5CrNiMo17-12-2 316 < 0.07 17.5 2.2 11.5 NS: 1400 Second best known austenitic grade. Mo increases the corrosion resistance.
The next set of 3 digits gives the steel's minimum yield strength. So S355 has a minimum yield strength of 355 MPa for the smallest thickness range covered by the relevant standard – i.e. EN10025. [ 2 ]
Microstructures of four kinds of duplex stainless steel in each direction. Duplex stainless steels are usually divided into three groups based on their pitting corrosion resistance, characterised by the pitting resistance equivalence number, PREN = %Cr + 3.3 %Mo + 16 %N.
2.0–3.0 Low-carbon grade for handling paper pulp as well as the production of rayon, rubber, textile bleaches, and high-temperature industrial equipment. This is the preferred grade for medical implants as it is resistant to sensitization (grain boundary carbide precipitation).