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Aerographene or graphene aerogel is the least dense solid known to exist, at 160 g/m 3 (0.0100 lb/cu ft; 0.16 mg/cm 3; 4.3 oz/cu yd). [1] The material reportedly can be produced at the scale of cubic meters.
Aerogels are a class of synthetic porous ultralight material derived from a gel, in which the liquid component for the gel has been replaced with a gas, without significant collapse of the gel structure. [2] The result is a solid with extremely low density [3] and extremely low thermal conductivity. Aerogels can be made from a variety of ...
Density system unit unit-code symbol or abbrev. notes sample default conversion combination output units Metric: kilogram per cubic metre: kg/m3 kg/m 3: 1.0 kg/m 3 (1.7 lb/cu yd)
Ultralight materials are solids with a density of less than 10 mg/cm 3. Ultralight material is defined by its cellular arrangement and its stiffness and strength that make up its solid constituent. They include silica aerogels, carbon nanotube aerogels, aero graphite, metallic foams, polymeric foams, and metallic micro lattices. [1]
— "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 .
(lightweight 1200 kg/m3) 0.38 (lightweight 600 kg/m3) 0.19 (aerated 500 kg/m3) 0.16 PLASTER: (1300 kg/m3) 0.50 (600 kg/m3) 0.16 TIMBER: Timber (650 kg/m3) 0.14 Timber flooring (650 kg/m3) 0.14 Timber rafters 0.13 Timber floor joists 0.13 MISC.: Calcium silicate board (600 kg/m3) 0.17 Expanded polystyrene 0.030 −0.038 Plywood (950 kg/m3) 0.16
A complete shape recovery of a 3-mm-tall sample after it was compressed down to 0.1 mm is possible. Its ultimate tensile strength (UTS) depends on material density and is about 160 kPa at 8.5 mg/cm 3 and 1 kPa at 0.18 mg/cm 3; in comparison, the strongest silica aerogels have a UTS of 16 kPa at 100 mg/cm 3.
≡ 1 ⁄ 7000 lb av ≡ 64.798 91 mg: grave: gv grave was the original name of the kilogram ≡ 1 kg hundredweight (long) long cwt or cwt ≡ 112 lb av = 50.802 345 44 kg: hundredweight (short); cental: sh cwt ≡ 100 lb av = 45.359 237 kg: hyl; metric slug: ≡ 1 kgf / 1 m/s 2 = 9.806 65 kg: kilogram (kilogramme) kg ≈ mass of the prototype ...