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  2. Orders of magnitude (pressure) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(pressure)

    > 10 MPa > 1,500 psi Pressure exerted by a 45 kg person wearing stiletto heels when a heel hits the floor [69] 15.5 Mpa 2,250 psi Primary coolant loop of a pressurized water reactor: 20 MPa 2,900 psi Typical pressure used for hydrogenolysis reactions [70] 21 MPa 3,000 psi Pressure of a typical aluminium scuba tank of pressurized air (210 bar ...

  3. French submarine Plongeur - Wikipedia

    en.wikipedia.org/wiki/French_submarine_Plongeur

    The air was contained in 23 tanks holding air at 12.5 bar (1.25 MPa, 180 psi), taking up a huge amount of space (153 m³/5,403 ft³), and requiring the submarine to be of unprecedented size. The engine had a power of 60 kW (80 hp), and could propel the submarine for 5 nmi (9 km), at a speed of 4 kn (7.2 km/h).

  4. Standard atmosphere (unit) - Wikipedia

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

    The standard atmosphere was originally defined as the pressure exerted by a 760 mm column of mercury at 0 °C (32 °F) and standard gravity (g n = 9.806 65 m/s 2). [2] It was used as a reference condition for physical and chemical properties, and the definition of the centigrade temperature scale set 100 °C as the boiling point of water at this pressure.

  5. Haber process - Wikipedia

    en.wikipedia.org/wiki/Haber_process

    Luigi Casale and Georges Claude proposed to increase the pressure of the synthesis loop to 80–100 MPa (800–1,000 bar; 12,000–15,000 psi), thereby increasing the single-pass ammonia conversion and making nearly complete liquefaction at ambient temperature feasible. Claude proposed to have three or four converters with liquefaction steps in ...

  6. Rebar - Wikipedia

    en.wikipedia.org/wiki/Rebar

    High strength (500 MPa) 16 mm diameter rebars spaced at 300 mm centers (center-to-center distance) on both the top and bottom face and in each way as well (i.e., longitudinal and transverse). 3-D12 Three mild strength (300 MPa) 12 mm diameter rebars R8 Stirrups @ 225 MAX D grade (300 MPa) smooth bar stirrups, spaced at 225 mm centres. By ...

  7. HK 4.6×30mm - Wikipedia

    en.wikipedia.org/wiki/HK_4.6×30mm

    This means that 4.6×30mm chambered arms in C.I.P. regulated countries are currently (2018) proof tested at 5,000 bar (500 MPa; 72,519 psi) PE piezo pressure. [6] Despite the relatively high Pmax the bolt thrust of the 4.6×30mm is on a similar level when compared with traditional service sidearm cartridges.

  8. Mariana Trench - Wikipedia

    en.wikipedia.org/wiki/Mariana_Trench

    At the bottom of the trench, the water column above exerts a pressure of 1,086 bar (15,750 psi), more than 1,071 times the standard atmospheric pressure at sea level. At this pressure, the density of water is increased by 4.96%. [citation needed] The temperature at the bottom is 1 to 4 °C (34 to 39 °F). [4]

  9. Bicycle tire - Wikipedia

    en.wikipedia.org/wiki/Bicycle_tire

    If a tire is inflated to 4 bar (400 kPa; 58 psi) at sea level, the absolute internal pressure would be 5 bar (500 kPa; 73 psi) (+25%), and this is the pressure that the tire would need to contain if it were moved to a location with no atmospheric pressure, such as the vacuum of free space. At the highest elevation of commercial air travel ...