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  2. Strip steel - Wikipedia

    en.wikipedia.org/wiki/Strip_steel

    Coils and strips of strip steel. Strip steel [1] [2] or cold rolled strip is a steel product that is produced from a hot rolled strip that has been pickled.The coil is then reduced by a single stand cold roll steel mill straight away or reversing mill or in a tandem mill consisting of several single stands in a series.

  3. Marston Mat - Wikipedia

    en.wikipedia.org/wiki/Marston_mat

    RAF aircrew with one of their Bristol Beaufighters on a PSP airstrip at Biferno, Italy, August 1944. Marston Mat, more properly called pierced (or perforated) steel planking (PSP), is standardized, perforated steel matting material developed by the United States at the Waterways Experiment Station shortly before World War II, primarily for the rapid construction of temporary runways and ...

  4. Flooring - Wikipedia

    en.wikipedia.org/wiki/Flooring

    Cork flooring comes in both tiles and planks, and can have glue or glues-less installation. Hardwood durability and hardness is determined by a ranking system called the Janka scale. The Janka scale is the force that it takes to embed a steel ball into the hardwood. The more force it takes to do so, the harder the wood.

  5. Tongue and groove - Wikipedia

    en.wikipedia.org/wiki/Tongue_and_groove

    The tongue may or may not be of the same material as the grooved pieces joined by the tongue. For example, plywood flooring is commonly grooved at the edges, and plastic tongues are used to form the joint. In old sailor slang vernacular, a "tonguin" (pronounced / t ə ŋ ɪ n /) can refer to repairs made to a boat of tongue and groove construction.

  6. Diffusionless transformation - Wikipedia

    en.wikipedia.org/wiki/Diffusionless_transformation

    The iron-carbon martensitic transformation generates an increase in hardness. The martensitic phase of the steel is supersaturated in carbon and thus undergoes solid solution strengthening. [6] Similar to work-hardened steels, defects prevent atoms from sliding past one another in an organized fashion, causing the material to become harder.

  7. Martensite - Wikipedia

    en.wikipedia.org/wiki/Martensite

    For a eutectoid steel (0.76% C), between 6 and 10% of austenite, called retained austenite, will remain. The percentage of retained austenite increases from insignificant for less than 0.6% C steel, to 13% retained austenite at 0.95% C and 30–47% retained austenite for a 1.4% carbon steel. A very rapid quench is essential to create martensite.