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  2. High-speed steel - Wikipedia

    en.wikipedia.org/wiki/High-speed_steel

    High-speed steel (HSS or HS) is a subset of tool steels, commonly used as cutting tool material. It is superior to high-carbon steel tools in that it can withstand higher temperatures without losing its temper (hardness). This property allows HSS to cut faster than high carbon steel, hence the name high-speed steel.

  3. Annular cutter - Wikipedia

    en.wikipedia.org/wiki/Annular_cutter

    A tungsten carbide tipped (TCT) and high-speed steel (HSS) annular cutter (also known as a "core drill" or "hole saw"). An annular cutter (also called a core drill, core cutter, broach cutter, trepanning drill, hole saw, or cup-type cutter) is a form of core drill used to create holes in metal.

  4. Metalworking - Wikipedia

    en.wikipedia.org/wiki/Metalworking

    A caliper is used to precisely measure a short length. Metalworking generally is divided into three categories: forming, cutting, and joining. Most metal cutting is done by high speed steel tools or carbide tools. [7] Each of these categories contains various processes.

  5. High Speed Railway Bridge over AP7, Llinars del Valles

    en.wikipedia.org/wiki/High_Speed_Railway_Bridge...

    The Llinars Bridge this bridge is the first steel structure in the high-speed railway (HSR) joining Barcelona and the French Border. The 1,883-foot-long (574 m) Llinars HSR bridge comprises two parts: a 1,008-foot-long (307 m) composite steel–concrete structure crossing Autopista AP-7, and a continuous prestressed concrete bridge crossing the Mogent River with a maximum span of 157 feet (48 m).

  6. HSS - Wikipedia

    en.wikipedia.org/wiki/HSS

    High-speed steel, a subset of tool steels Home Subscriber Server , a mobile subscriber database, part of the IMS framework Hollow structural section , a type of metal profile

  7. Railway track - Wikipedia

    en.wikipedia.org/wiki/Railway_track

    Modern track typically uses hot-rolled steel with a profile of an asymmetrical rounded I-beam. [16] Unlike some other uses of iron and steel, railway rails are subject to very high stresses and have to be made of very high-quality steel alloy. It took many decades to improve the quality of the materials, including the change from iron to steel.

  8. Steel - Wikipedia

    en.wikipedia.org/wiki/Steel

    High-carbon steel was produced in Britain at Broxmouth Hillfort from 490–375 BC, [23] [24] and ultrahigh-carbon steel was produced in the Netherlands from the 2nd-4th centuries AD. [25] The Roman author Horace identifies steel weapons such as the falcata in the Iberian Peninsula, while Noric steel was used by the Roman military. [26]

  9. Wendover Dean Viaduct - Wikipedia

    en.wikipedia.org/wiki/Wendover_Dean_Viaduct

    Approval for the viaduct's construction was issued in 2017 via the High Speed Rail (London - West Midlands) Act 2017; its design was publicly revealed two years later. In June 2021, Buckinghamshire Council also approved plans for the viaduct. Design revisions centred around improving its aesthetics and minimising its impact on the countryside.