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  2. Unified numbering system - Wikipedia

    en.wikipedia.org/wiki/Unified_numbering_system

    It consists of a prefix letter and five digits designating a material composition. For example, a prefix of S indicates stainless steel alloys, C indicates copper, brass, or bronze alloys, T indicates tool steels, and so on. The first 3 digits often match older 3-digit numbering systems, while the last 2 digits indicate more modern variations.

  3. List of copper alloys - Wikipedia

    en.wikipedia.org/wiki/List_of_copper_alloys

    A bronze is an alloy of copper and other metals, most often tin, but also aluminium and silicon. Aluminium bronzes are alloys of copper and aluminium. The content of aluminium ranges mostly between 5% and 11%.

  4. List of brazing alloys - Wikipedia

    en.wikipedia.org/wiki/List_of_brazing_alloys

    F Bronze. For brazing tungsten carbide to steels. Primarily used for rock drills or when simultaneous heat treatment is required. 57: 38: 2: 2: Cu 86 Zn 10 Co 4: Cu–Zn 960/1030 [69] – D Bronze. For brazing tungsten carbide to steels. Primarily used for rock drills or when simultaneous heat treatment is required. 86: 10: 4: Cu 85 Sn 8 Ag 7 ...

  5. Aluminium bronze - Wikipedia

    en.wikipedia.org/wiki/Aluminium_bronze

    Aluminium bronzes are most valued for their higher strength and corrosion resistance as compared to other bronze alloys. These alloys are tarnish-resistant and show low rates of corrosion in atmospheric conditions, low oxidation rates at high temperatures, and low reactivity with sulfurous compounds and other exhaust products of combustion.

  6. Talk:Unified numbering system - Wikipedia

    en.wikipedia.org/wiki/Talk:Unified_numbering_system

    Specifications that identify form, heat treatment, minimum material properties, and quality controls are subsets of this alloy, and these subsets can have even greater variation than the example I gave above. For example, when 17-4PH is heat treated to condition H900, it attains a tensile strength of 1365 MPa.

  7. Metallic mean - Wikipedia

    en.wikipedia.org/wiki/Metallic_mean

    The term "bronze ratio" (=) (Cf. Golden Age and Olympic Medals) and even metals such as copper (=) and nickel (=) are occasionally found in the literature. [ 2 ] [ 3 ] In terms of algebraic number theory , the metallic means are exactly the real quadratic integers that are greater than 1 {\displaystyle 1} and have − 1 {\displaystyle -1} as ...

  8. Barcol hardness test - Wikipedia

    en.wikipedia.org/wiki/Barcol_hardness_test

    Barcol hardness is measured on a scale from 0 to 100 with the typical range being between 50B and 90B. A measurement of 60B is roughly equivalent to a Shore hardness of 80D or a Rockwell hardness M100. [4] [6] As defined in ASTM D 2583 the scale divisions from 0-100 should each indicate a depth of 0.0076 mm or the equivalent 0.0003 inches. [7]

  9. Standard form - Wikipedia

    en.wikipedia.org/wiki/Standard_form

    Standard form may refer to a way of writing very large or very small numbers by comparing the powers of ten. It is also known as Scientific notation. Numbers in standard form are written in this format: a×10 n Where a is a number 1 ≤ a < 10 and n is an integer. ln mathematics and science Canonical form