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  2. Prices of chemical elements - Wikipedia

    en.wikipedia.org/wiki/Prices_of_chemical_elements

    This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. Data on elements' abundance in Earth's crust is added for comparison. As of 2020, the most expensive non-synthetic element by both mass and volume is rhodium.

  3. List of brazing alloys - Wikipedia

    en.wikipedia.org/wiki/List_of_brazing_alloys

    For copper, brass and bronze. Self-fluxing on copper. Also usable on silver, tungsten, and molybdenum. Primarily for copper-to-copper joining. Low resistance to vibrations. Good for tight-fitting copper pipes and tubing. Extremely fluid, will penetrate even thin joints. Light copper color. Maximum service temperature 149 °C (intermittently 204 ...

  4. Copper tubing - Wikipedia

    en.wikipedia.org/wiki/Copper_tubing

    While pipe sizes in Australia are inch-based, they are classified by outside rather than inside diameter (e.g., a nominal 3 ⁄ 4 inch copper pipe in Australia has measured diameters of 0.750 inches outside and 0.638 inches inside, whereas a nominal 3 ⁄ 4 inch copper pipe in the U.S. and Canada has measured diameters of 0.875 inch outside and ...

  5. Table of specific heat capacities - Wikipedia

    en.wikipedia.org/wiki/Table_of_specific_heat...

    For example, Paraffin has very large molecules and thus a high heat capacity per mole, but as a substance it does not have remarkable heat capacity in terms of volume, mass, or atom-mol (which is just 1.41 R per mole of atoms, or less than half of most solids, in terms of heat capacity per atom).

  6. Uranium mining - Wikipedia

    en.wikipedia.org/wiki/Uranium_mining

    Prices paid for uranium during the 1970s were higher, 43 US$/lb-U 3 O 8 is reported as the selling price for Australian uranium in 1978 by the Nuclear Information Centre. Uranium prices reached an all-time low in 2001, costing US$7/lb, but in April 2007 the price of Uranium on the spot market rose to US$113.00/lb, [119] a high point of the ...

  7. Bundy tube - Wikipedia

    en.wikipedia.org/wiki/Bundy_tube

    A 1969 study by the Society of Automotive Engineers (SAE) recommended the replacement of Bundy tube with 90-10 copper-nickel alloy UNS C70600 (Kunifer pipe) because of corrosion concerns. [1] Kunifer pipe has since been adopted by European automakers Volvo , Rolls-Royce , Lotus Cars , Aston-Martin , Porsche , and Audi . [ 2 ]