When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. Savinelli Pipes - Wikipedia

    en.wikipedia.org/wiki/Savinelli_Pipes

    Savinelli Pipes is an Italian smoking pipe maker headquartered in Milan and founded in 1876. [ 1 ] [ 2 ] The company makes machine and carved pipes, and is recognized for its craftsmanship. [ 3 ]

  3. Rockwell hardness test - Wikipedia

    en.wikipedia.org/wiki/Rockwell_hardness_test

    spheroconical diamond † Steel, stainless steels, hard cast irons, pearlitic malleable iron, titanium, titanium alloys, deep case-hardened steel, other materials harder than 100 HRB: 100: 500 D: HRD: 100: spheroconical diamond † Thin steel and medium case-hardened steel and pearlitic malleable iron: 100: 500 E: HRE: 100: 1 ⁄ 8 in (3.18 mm ...

  4. Hardnesses of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Hardnesses_of_the_elements...

    This page was last edited on 16 November 2024, at 12:16 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  5. Superhard material - Wikipedia

    en.wikipedia.org/wiki/Superhard_material

    It is unclear whether the synthesis products are diamond-like solid solutions between carbon and boron nitride or just mechanical mixtures of highly dispersed diamond and c-BN. In 2001, a diamond-like-structured c-BC 2 N was synthesized at pressures >18 GPa and temperatures >2,200 K by a direct solid-state phase transition of graphite-like (BN ...

  6. Carbonado - Wikipedia

    en.wikipedia.org/wiki/Carbonado

    Carbonado, commonly known as black diamond, is one of the toughest forms of natural diamond. It is an impure, high-density, micro-porous form of polycrystalline diamond consisting of diamond, graphite , and amorphous carbon , with minor crystalline precipitates filling pores and occasional reduced metal inclusions. [ 1 ]

  7. 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

  8. Vickers hardness test - Wikipedia

    en.wikipedia.org/wiki/Vickers_hardness_test

    The unit of hardness given by the test is known as the Vickers Pyramid Number (HV) or Diamond Pyramid Hardness (DPH). The hardness number can be converted into units of pascals, but should not be confused with pressure, which uses the same units. The hardness number is determined by the load over the surface area of the indentation and not the ...

  9. Austenitic stainless steel - Wikipedia

    en.wikipedia.org/wiki/Austenitic_stainless_steel

    321 < 0.08 18 NS: 10.5 Ti: 5×C ≤ 0.70 1425 Same as grade 1.4301 but not susceptible to intergranular corrosion thanks to Ti which "traps" C. 1.4401 X5CrNiMo17-12-2 316 < 0.07 17.5 2.2 11.5 NS: 1400 Second best known austenitic grade. Mo increases the corrosion resistance. 1.4404 X2CrNiMo17-12-2 316L < 0.030 17.5 2.25 11.5 NS: 1400