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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).
It is sometimes known by the brand name of Tufftride, Tenifer or Melonite. [1] Three steps are involved: nitrocarburize ("quench"), polish, and post-oxidize ("quench"). [2] This process is often used when two or more of the following properties are required in a workpiece: wear resistance; corrosion resistance; fatigue strength
The simplest form of this process is encompassed by the trademarked "Melonite" process, also known as "Meli 1". It is most commonly used on steels, sintered irons, and cast irons to lower friction and improve wear and corrosion resistance. [14] [15] The process uses a salt bath of alkali cyanate. This is contained in a steel pot that has an ...
The U.S. imports some 4 million barrels per day of Canadian oil, 70% of which is processed by refiners in the Midwest. It also imports over 450,000 bpd of Mexican oil, mainly for refiners ...
Bushmaster Firearms originally produced their 'First Generation' rifle using an aluminum lower receiver and a stamped steel upper receiver. This first-generation model used a long-stroke gas piston operating system. The recoil spring was within the upper barrel gas system compared to the AR-15/M-16, where the recoil spring is within the butt stock.
China has launched a national plan to address the rapidly growing prevalence of dementia, which authorities say is becoming "a widespread societal concern" and poses "significant challenges" to ...
The barrels come with either a melonite lined or chrome-lined 4140 steel rifling, and 7075 T6 aluminum receiver with a hard-coat black anodized finish. [ 13 ] The Standard model has an adjustable CAR-15 stock and comes with 10-round or 30-round magazine.
West Texas Intermediate crude oil slumped 1.10% to $73.44 a barrel. Brent crude, the international benchmark, inched up 0.16% to trade at $76.28 a barrel. Gold moved up 0.5% to $2,662 an ounce.