Material | r | lb/ft3 | kN/m3 | Aluminum alloys | - | - | 2014-T6 | 170 | 27 | 7075-T6 | 175 | 28 | 6061-T6 | 170 | 26 | Brass | 530 | 83.5 | Bronze | 530 | 83 | Cast iron | 447.5 | 70 | Concrete | - | - | Plain | 145 | 23 | Reinforced | 150 | 24 | Lightweight | 92.5 | 16.5 | Copper | 556 | 87 | glass | 165 | 26 | Magnesium alloys | 112 | 17.5 | Monel (67% Ni, 30% Cu) | 550 | 87 | Nickel | 550 | 87 | Plastics | - | - | Nylon | 62.5 | 9.8 | Polyethylene | 75 | 11.7 | Rock | - | - | Granite, marble, quartz | 172.5 | 27 | Limestone, sandstone | 152.5 | 24 | Rubber | 70 | 11 | Sand, soil, gravel | 105 | 16.5 | Steel | 490 | 77 | Titanium | 280 | 44 | Tungsten | 1,200 | 190 | Water, fresh | 62.4 | 9.81 | sea | 63.8 | 10 | Wood (air dry) | - | - | Douglas fir | 32.5 | 5.1 | Oak | 42.5 | 6.7 | Southern pine | 37.5 | 5.9 | | | Material | a | 10-6/ oF | 10-6/ oC | Aluminum alloys | 13 | 23 | Brass | 11.2 | 20.15 | Bronze | 10.75 | 19.5 | Cast iron | 11.6 | 10.95 | Concrete | 6 | 10.5 | Copper & copper alloys | 9.5 | 17.1 | Glass | 4.5 | 8 | Magnesium alloys | 15.25 | 27.45 | Monel (67% Ni, 30% Cu) | 7.7 | 14 | Nickel | 7.2 | 13 | |
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