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  2. High-speed steel - Wikipedia

    en.wikipedia.org/wiki/High-speed_steel

    M42 is a molybdenum-series high-speed steel alloy with an additional 8% cobalt. [14] It is widely used in metal manufacturing industries because of its superior red-hardness as compared to more conventional high-speed steels, allowing for shorter cycle times in production environments due to higher cutting speeds or from the increase in time ...

  3. Spark testing - Wikipedia

    en.wikipedia.org/wiki/Spark_testing

    Manganese steel Manganese steel has medium length sparks that fork twice before ending. [5] High-speed steel High-speed steel has a faint red spark that sparks at the tip. [5] 300-series stainless steel These sparks are not so dense as the carbon steel sparks, do not fork, and are orange to straw in color. [2] 310-series stainless steel

  4. List of named alloys - Wikipedia

    en.wikipedia.org/wiki/List_of_named_alloys

    Hiduminium or R.R. alloys (2% copper, iron, nickel): used in aircraft pistons Hydronalium (up to 12% magnesium, 1% manganese): used in shipbuilding, resists seawater corrosion Italma (3.5% magnesium, 0.3% manganese): formerly used to make coinage of the Italian lira

  5. Stellite - Wikipedia

    en.wikipedia.org/wiki/Stellite

    Stellite alloys are a family of completely non-magnetic and corrosion-resistant cobalt alloys of various compositions that have been optimised for different uses. Stellite alloys are suited for cutting tools, an example is Stellite 100, because this alloy is quite hard, maintains a good cutting edge at high temperature, and resists hardening and annealing.

  6. Electrical resistivities of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Electrical_resistivities_of...

    26 Fe iron; use 6.93 nΩm 85.7 nΩm 96.1 nΩm ... high 35 Br bromine; use 7.8×10 10 Ωm LNG ... 79 Au gold; use 4.81 nΩm 20.51 nΩm 22.14 nΩm

  7. HSSE - Wikipedia

    en.wikipedia.org/wiki/HSSE

    HSSE tool steel, a type of high-speed steel (HSS) with cobalt-alloy used as a cutting tool material, see High-speed steel#Cobalt High Speed Steels (HSS) Health, safety, security and the environment, a term used in the petroleum industry or as a department of bigger firms, for the general issue see Environment, health and safety

  8. Heavy metals - Wikipedia

    en.wikipedia.org/wiki/Heavy_metals

    Home electrical systems, for the most part, are wired with copper wire for its good conducting properties. [163] Silver and gold are used in electrical and electronic devices, particularly in contact switches , as a result of their high electrical conductivity and capacity to resist or minimise the formation of impurities on their surfaces. [ 164 ]

  9. Permeability (electromagnetism) - Wikipedia

    en.wikipedia.org/wiki/Permeability...

    For example, 4% electrical steel has an initial relative permeability (at or near 0 T) of 2,000 and a maximum of 38,000 at T = 1 [5] [6] and different range of values at different percent of Si and manufacturing process, and, indeed, the relative permeability of any material at a sufficiently high field strength trends toward 1 (at magnetic ...

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