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  2. Steel grades - Wikipedia

    en.wikipedia.org/wiki/Steel_grades

    EN 10027-1 steel grade designation system. European standard steel grade names fall into two categories: [1] Steel specified by purpose of use and mechanical properties. Steel specified by chemical composition. The inclusion of a letter 'G' before the code indicates the steel is specified in the form of a casting.

  3. 41xx steel - Wikipedia

    en.wikipedia.org/wiki/41xx_steel

    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).

  4. List of blade materials - Wikipedia

    en.wikipedia.org/wiki/List_of_blade_materials

    4140 [definition needed] 6150, a chromium-vanadium alloy. Similar to 4140, 6150 is a tough steel with high impact resistance. It can be hardened to the mid-50s on the HRC scale. [citation needed] While a common material for swords or hatchets, it is less than ideal for most knives because of its limited attainable hardness.

  5. SAE steel grades - Wikipedia

    en.wikipedia.org/wiki/SAE_steel_grades

    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.

  6. Rock Island Armory 1911 series - Wikipedia

    en.wikipedia.org/wiki/Rock_Island_Armory_1911_series

    The general specifications for Rock Island Armory 1911 pistols are: [5] Ordnance grade 4140 chromoly steel steel construction with a cast frame. [6] [7] 100% parts compatibility with US G.I. Flat grooved steel mainspring housing; Calibers: .45 ACP, 10mm Auto, .40 S&W, .38 Super, 9mm Luger, and .22 TCM [8] [9]

  7. Smith & Wesson M&P10 - Wikipedia

    en.wikipedia.org/wiki/Smith_&_Wesson_M&P10

    Smith & Wesson offers the M&P10 semi-automatic rifles in a variety of configurations tailored to specific shooting applications and styles. The standard model has a six-position collapsible stock, 4140 steel barrel, 7075 T6 aluminum receiver and a hard-coat black anodized finish.

  8. Murphy JDM-8 - Wikipedia

    en.wikipedia.org/wiki/Murphy_JDM-8

    The tail wheel spring is of 4140 steel and incorporates an inline skate wheel. [1] The JDM-8 wing is constructed with an aluminum D-cell leading edge incorporating a 9 in (23 cm) high C-channel main spar made from 6061-T6 grade aluminum. The rear spar is a similar C-channel that is 5 in (12.7 cm) high and there is a third nose spar that is 3 in ...

  9. Martensite - Wikipedia

    en.wikipedia.org/wiki/Martensite

    Martensite in AISI 4140 steel 0.35% carbon steel, water-quenched from 870 °C. Martensite is a very hard form of steel crystalline structure. It is named after German metallurgist Adolf Martens. By analogy the term can also refer to any crystal structure that is formed by diffusionless transformation. [1]

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