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  2. Densities of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Densities_of_the_elements...

    — "Values ranging from 21.3 to 21.5 gm/cm 3 at 20 °C have been reported for the density of annealed platinum; the best value being about 21.45 gm/cm 3 at 20 °C." 21.46 g/cm 3 — Rose, T. Kirke. The Precious Metals, Comprising Gold, Silver and Platinum .

  3. High-density polyethylene - Wikipedia

    en.wikipedia.org/wiki/High-density_polyethylene

    HDPE is known for its high strength-to-density ratio. [4] The density of HDPE ranges from 930 to 970 kg/m 3. [5] Although the density of HDPE is only marginally higher than that of low-density polyethylene, HDPE has little branching, giving it stronger intermolecular forces and tensile strength (38 MPa versus 21 MPa) than LDPE. [6]

  4. List of thermal conductivities - Wikipedia

    en.wikipedia.org/wiki/List_of_thermal_conductivities

    (2300 kg/m3) 1.63 (2100 kg/m3 typical floor) 1.40 ... Polyethylene, high-density 0.42 [5] - 0.51 [5] ... Tool Steel, 1.41% C, 0.23% Mn, 0.158% Si L

  5. Polyethylene - Wikipedia

    en.wikipedia.org/wiki/Polyethylene

    Stainless steel and ultra high molecular weight polyethylene hip replacement ... Polyethylene has a density of 1.0 g/cm 3 in ... (180,000,000 kg), and will produce ...

  6. Specific modulus - Wikipedia

    en.wikipedia.org/wiki/Specific_modulus

    Young's modulus per density squared (10 3 m 5 kg1 s −2) Young's modulus per density cubed (m 8 kg −2 s −2) Reference Latex foam, low density, 10% compression [4] 5.9 × 10 ^ −7: 0.06: 9.83 × 10 ^ −6: 0.000164: 0.00273: Reversible Assembled Cellular Composite Materials 0.0123: 0.0072: 1.71: 237: 32,953 [5] [6] Self Reprogrammable ...

  7. Expanded polyethylene - Wikipedia

    en.wikipedia.org/wiki/Expanded_polyethylene

    Typical densities are 29 to 120 kg/m 3 (49 to 202 lb/cu yd) with the lower figure being common. [1] Densities as low as 14 kg/m 3 (24 lb/cu yd) can be produced. [2] Base polymer for EPE foams range from Low-density polyethylene (LDPE) to High-density polyethylene (HDPE). [2]

  8. Mass attenuation coefficient - Wikipedia

    en.wikipedia.org/wiki/Mass_attenuation_coefficient

    The SI unit of mass attenuation coefficient is the square metre per kilogram (m 2 /kg). Other common units include cm 2 /g (the most common unit for X-ray mass attenuation coefficients) and L⋅g −1 ⋅cm −1 (sometimes used in solution chemistry). Mass extinction coefficient is an old term for this quantity. [1]

  9. Specific strength - Wikipedia

    en.wikipedia.org/wiki/Specific_strength

    One Yuri equals 1 Pa⋅m 3 /kg or 1 N⋅m/kg, which is the breaking/yielding force per linear density of the cable under tension. [ 42 ] [ 43 ] A functional Earth space elevator would require a tether of 30–80 megaYuri (corresponding to 3100–8200 km of breaking length).