Search results
Results from the WOW.Com Content Network
Ferrochrome or ferrochromium (FeCr) is a type of ferroalloy, that is, an alloy of chromium and iron, generally containing 50 to 70% chromium by weight. [ 1 ] [ 2 ] Ferrochrome is produced by electric arc carbothermic reduction of chromite .
Chromite today is mined particularly to make stainless steel through the production of ferrochrome (Fe Cr), which is an iron-chromium alloy. [8] Chromite grains are commonly found in large mafic igneous intrusions such as the Bushveld in South Africa and India.
Ferroalloys are used as deoxidizers and alloy additives in the steel manufacturing process. The ferromanganese plant started production in 1957, equipped with three furnaces for production of high carbon ferromanganese and ferrosilicon. In 1969, a reduction furnace and a slag furnace were commissioned for the production of ferrochrome. The ...
Chrome steel is the name for any one of a class of non-stainless steels such as AISI 52100, SUJ2, 100Cr6, [1] En31, 100C6, and DIN 5401 which are used for applications such as bearings, tools, drills and utensils. Like stainless steel, chrome steels contain chromium, but do not have the corrosion-resistant properties of stainless steel. [2]
Steels with relatively high titanium content include interstitial-free, stainless and high-strength low-alloy steels. Ferrotitanium is usually produced by induction melting of titanium scrap with iron or steel; however, it also is produced directly from titanium mineral concentrates. The standard grades of ferrotitanium are 30% and 70% titanium.
Duplex steels also have higher strength. For example, a Type 304 stainless steel has a 0.2% proof strength in the region of 280 MPa (41 ksi), a 22%Cr duplex stainless steel a minimum 0.2% proof strength of some 450 MPa (65 ksi) and a superduplex grade a minimum of 550 MPa (80 ksi). [6]
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).
The remanence and squareness properties of the three groups substantially differ, while coercivity remains almost unchanged at around 380 Oe (360 Oe for the IEC reference tape approved in 1979 [36]). Quality Type I cassettes have higher midrange MOL than most Type II tapes, slow and gentle MOL roll-off at low frequencies, but less high ...