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  2. Bar (unit) - Wikipedia

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

    The kilobar, equivalent to 100 MPa, is commonly used in geological systems, particularly in experimental petrology. The abbreviations "bar(a)" and "bara" are sometimes used to indicate absolute pressures, and "bar(g)" and "barg" for gauge pressures. The usage is deprecated but still prevails in the oil industry (often by capitalized "BarG" and ...

  3. Fracture toughness - Wikipedia

    en.wikipedia.org/wiki/Fracture_toughness

    The test is performed by loading steadily at a rate such that K I increases from 0.55 to 2.75 (MPa)/s. During the test, the load and the crack mouth opening displacement (CMOD) is recorded and the test is continued till the maximum load is reached. The critical load P Q is calculated through from the load vs CMOD plot.

  4. Specific strength - Wikipedia

    en.wikipedia.org/wiki/Specific_strength

    The specific strength is a material's (or muscle's) strength (force per unit area at failure) divided by its density.It is also known as the strength-to-weight ratio or strength/weight ratio or strength-to-mass ratio.

  5. Pound per square inch - Wikipedia

    en.wikipedia.org/wiki/Pound_per_square_inch

    The conversion in SI units is 1 ksi = 6.895 MPa, or 1 MPa = 0.145 ksi. The megapound per square inch (Mpsi) is another multiple equal to a million psi. It is used in mechanics for the elastic modulus of materials, especially for metals. [5] The conversion in SI units is 1 Mpsi = 6.895 GPa, or 1 GPa = 0.145 Mpsi.

  6. Shear force - Wikipedia

    en.wikipedia.org/wiki/Shear_force

    A bolt with property class 12.9 has a tensile strength of 1200 MPa (1 MPa = 1 N/mm 2) or 1.2 kN/mm 2 and the yield strength is 0.90 times tensile strength, 1080 MPa in this case. A bolt with property class 4.6 has a tensile strength of 400 MPa (1 MPa = 1 N/mm 2 ) or 0.4 kN/mm 2 and yield strength is 0.60 times tensile strength, 240 MPa in this ...

  7. Zamak - Wikipedia

    en.wikipedia.org/wiki/Zamak

    268 MPa 38,900 psi Yield strength (0.2% offset) 208 MPa 30,200 psi Impact strength 46 J (56 J aged) 34 ft-lbf (41 ft-lbf aged) Elongation at F max: 3% Elongation at fracture 6.3% (16% aged) Shear strength 214 MPa 31,000 psi Compressive yield strength 414 MPa 60,000 psi Fatigue strength (reverse bending 5x10 8 cycles) 48 MPa 7,000 psi Hardness

  8. Phases of ice - Wikipedia

    en.wikipedia.org/wiki/Phases_of_ice

    To create ice XVII, the researchers first produced filled ice in a stable phase named C 0 from a mixture of hydrogen (H 2) and water (H 2 O), using temperatures from 100 to 270 K (−173 to −3 °C; −280 to 26 °F) and pressures from 360 to 700 MPa (52,000 to 102,000 psi; 3,600 to 6,900 atm), and C 2 are all stable solid phases of a mixture ...

  9. Orders of magnitude (temperature) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude...

    4800 K, 10 MPa, triple point of carbon [3] 5000 K, 12 GPa melting point of diamond [4] 5100 K in cyanogen–dioxygen flame; 5516 K at dicyanoacetylene (carbon subnitride)–ozone flame; 5650 K at Earth's Inner Core Boundary; 5780 K on surface of the Sun; 5933 K, boiling point of tungsten; 6000 K, mean of the Universe 300,000 years after the Big ...