The given answers are confusing and misuse units.
The density at room temperature of the most common isotope of Pu (i.e., 239) is
19.816 grams per cubic centimeter (g/cm^3).
One cubic inch equals 16.387 064 cm^3.
19.816 * 16.387 064 = 324.73 g/in^3.
once cubic inch of plutonuim is about 715 pounds 1 cubic inch = 16,387 06 cm2 Density of plutonium: 19,816 g/cm3 The weight of 1 cubic inch of plutonium = density x volume = 324,726 grams
1 cubic inch = 16.387 cm3 Density of plutonium: 19.816 g/cm3 The weight of 1 cubic inch of plutonium = density x volume = 324.7 grams or about 11 1/2 ounces.
0.283 pounds per cubic inch
0.283 lb. per cubic inch
A cubic inch of titanium weighs 0.163 pounds.
cca. 561,13 kg at room temperature
0.0014 to 0.0015 pound weight per cubic inch.
106,843631 grams
1.166666 #
Weight per cubic inch is: .307
Gray cast iron is around 118 grams per cubic inch.
0.49 lbs.