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  2. Bronze - Wikipedia

    en.wikipedia.org/wiki/Bronze

    Bronze is an alloy consisting primarily of copper, commonly with about 12–12.5% tin and often with the addition of other metals (including aluminium, manganese, nickel, or zinc) and sometimes non-metals (such as phosphorus) or metalloids (such as arsenic or silicon).

  3. Byzantine units of measurement - Wikipedia

    en.wikipedia.org/wiki/Byzantine_units_of_measurement

    Model weights were made in lead, bronze, and glass and (less often) from gold and silver. [19] They came in various styles. Presently, archaeologists believe the bronze spheres sliced flat at top and bottom and marked with an omicron / upsilon date from the early 3rd to late 5th centuries, gradually being replaced by cubes marked with a gamma ...

  4. Medieval weights and measures - Wikipedia

    en.wikipedia.org/wiki/Medieval_weights_and_measures

    ^ In this and following weight units kg. and gr. mean technically kg-weight or gr-weight. ^ https://islamansiklopedisi.org.tr/arsin ^ a b Erkal, Mehmet (1991). Arşın, TDV İslâm Ansiklopedisi, Cilt 3, s 411-413, İstanbul ^ Kâtip Çelebi (2007). Deniz Savaşları Hakkında Büyüklere Armağan (Tuhfetü’l-Kibar fi Estari’l-Bihar ...

  5. Aluminium bronze - Wikipedia

    en.wikipedia.org/wiki/Aluminium_bronze

    Italy pioneered the use for coinage of an aluminium-bronze alloy called bronzital (literally "Italian bronze") in its 5- and 10-centesimi from 1939. Its alloy was finalized in 1967 to 92% copper, 6% aluminium, and 2% nickel, [ 5 ] and was since used in the 20, 200 and 500 Italian Lira coins until 2001.

  6. Wear coefficient - Wikipedia

    en.wikipedia.org/wiki/Wear_coefficient

    As can be estimated from weight loss and the density , the wear coefficient can also be expressed as: [2] K = 3 H W P L ρ {\displaystyle K={\frac {3HW}{PL\rho }}} As the standard method uses the total volume loss and the total sliding distance, there is a need to define the net steady-state wear coefficient:

  7. Grain (unit) - Wikipedia

    en.wikipedia.org/wiki/Grain_(unit)

    The grain was the legal foundation of traditional English weight systems, [5] and is the only unit that is equal throughout the troy, avoirdupois, and apothecaries' systems of mass. [6]: C-6 The unit was based on the weight of a single grain of barley which was equal to about + 4 ⁄ 3 the weight of a single grain of wheat.

  8. Talent (measurement) - Wikipedia

    en.wikipedia.org/wiki/Talent_(measurement)

    An Attic weight talent was about 25.8 kilograms (57 lb). Friedrich Hultsch estimated a weight of 26.2 kg, [25] and Dewald (1998) offers an estimate of 26.0 kg. [26] An Attic talent of silver was the value of nine man-years of skilled work, according to known wage rates from 377 BC. [27]

  9. Bismuth bronze - Wikipedia

    en.wikipedia.org/wiki/Bismuth_bronze

    Bismuth bronze or bismuth brass is a copper alloy which typically contains 1-3% bismuth by weight, although some alloys contain over 6% Bi. This bronze alloy is very corrosion -resistant, a property which makes it suitable for use in environments such as the ocean.

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