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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.
Typically Grade EN 1.4462 (also called 2205). It is typical of the mid-range of properties and is perhaps the most used today Super-duplex (PREN range: 38–45) Typically grade EN 1.4410 up to so-called hyper duplex grades (PREN: >45) developed later to meet specific demands of the oil and gas as well as those of the chemical industries.
In addition to the descriptive steel grade naming system indicated above, within EN 10027-2 is defined a system for creating unique steel grade numbers. While less descriptive and intuitive than the grand names they are easier to tabulate and use in data processing applications.
The ISO 13399 has been developed with contributions from AB Sandvik Coromant, the Royal Institute of Technology in Stockholm, Kennametal Inc, and Ferroday Ltd. ISO 13399 is developed and maintained by the ISO technical committee TC 29, Small tools , sub-committee WG34.
In August 2022, the business area Sandvik materials technology, which included tubes, strip steel, medical wires and Kanthal-brand heating technology products, was spun off as a separate company, publicly listed at Nasdaq Stockholm. The new company was named Alleima, and its shares were distributed to the shareholders of Sandvik. [3] [2] [14]
Sandvik series [44] 6C27, a common knife steel grade with good corrosion resistance and low hardness, is mainly used in applications where the need for wear resistance is low. 7C27Mo2, generally the same properties as Sandvik 6C27, but with improved corrosion resistance. 12C27, a grade with high hardness and good wear resistance.
SAF 2205, is a Alleima-owned trademark (Formerly Sandvik Materials Technology) for a 22Cr duplex (ferritic-austenitic) stainless steel. SAF derives from S andvik A ustenite F errite. The nominal chemical composition of SAF 2205 is 22% chromium , 5% nickel , 3.2% molybdenum and other alloying elements such as nitrogen and manganese . [ 1 ]
SAE Type 630 stainless steel (more commonly known as 17-4 PH, or simply 17-4; also known as UNS S17400) is a grade of martensitic precipitation hardened stainless steel. It contains approximately 15–17.5% chromium and 3–5% nickel, as well as 3–5% copper. [1] The name comes from the chemical makeup which is approximately 17% chromium and 4 ...