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41xx steel is a family of SAE steel grades, as specified by the Society of Automotive Engineers (SAE). Alloying elements include chromium and molybdenum, and as a result these materials are often informally referred to as chromoly steel (common variant stylings include chrome-moly, cro-moly, CrMo, CRMO, CR-MOLY, and similar).
Stellite alloys are a family of completely non-magnetic and corrosion-resistant cobalt alloys of various compositions that have been optimised for different uses. Stellite alloys are suited for cutting tools, an example is Stellite 100, because this alloy is quite hard, maintains a good cutting edge at high temperature, and resists hardening and annealing.
Has lower molybdenum content than ATS-34, is less wear-resistant than ATS-34 and has been reported to be also less rust-resistant than ATS-34. [7] BG-42 is Slightly higher in carbon, chrome, and moly than ATS-34. Must be forged and heat-treated at very high and exact temperatures. Can be used at very high hardness, such as RC 64–66.
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.
Nitriding alloys are alloy steels with nitride-forming elements such as aluminum, chromium, molybdenum and titanium. In 2015, nitriding was used to generate a unique duplex microstructure in an iron-manganese alloy (martensite-austenite, austenite-ferrite), known to be associated with strongly enhanced mechanical properties. [7]
Glock Ges.m.b.H., an Austrian firearms manufacturer, utilized the Tenifer process until 2010, to protect the barrels and slides of the pistols they manufacture. The finish on a Glock pistol is the third and final hardening process. It is 0.05 mm (0.0020 in) thick and produces a 64 Rockwell C hardness rating via a 500 °C (932 °F) nitride bath ...
Chromium–vanadium steel (symbol Cr-V or CrV; 6000-series SAE steel grades, often marketed as "Boss AA" [1] ...
This was particularly true in the 1950s to early 1960s, with the chrome moly steels almost universally used for barrels then. But recent advances with stainless steel barrels, especially with cryogenic treatment , have extended barrel life considerably with the .264 Win. Mag. and many other cartridges.