2006-10-02 10:41:16 · 13 answers · asked by benneth 1 in Science & Mathematics ➔ Engineering
Poud for pound everything weighs the same, 1 pound per pound.
If you are talking about strength to weight ratio, carbon fiber composite is probably the strongest material. With yields up to 200,000 psi and a density of 1.75 that of water. Aluminum comes in at 70,000 psi with a density of 2.7 and steel at 250,000 psi and a density of 8.
If you mean stiffness to weight, its different. Stiffness being how much something deflects under load. Strength is the maximum load without permanent deformation. For stiffness to weight Berylium is about the best. Its density is similar to carbon but its stiffness (modulus of elasticity) is almost 3 times that of carbon or steel and 8 times that of aluminum. It is expensive and is used in structures such as gyroscopes that require high stability and stiffness.
2006-10-02 10:53:57 · answer #1 · answered by Pretzels 5 · 1⤊ 1⤋
i think you "mean metre cubed for metre cubed, what is the lightest materia"l, or "what is the least dense material" because as everyone seems to have said, pound for pound everything weighs the same. The lightest element is hydrogen, but you'd never fing that in solid form. the least dense metal is lithium (although hydrogen would technically be a metal in solid form). The lightest non-metal is Boron.
2006-10-02 17:54:57 · answer #2 · answered by THJE 3 · 0⤊ 0⤋
Numnuts... a pound of anything weighs the same as a pound of anything else. A pound of lead weighs the same as a pound of styrofoam or a pound of air.
Go back to the drawing board.
Phrasing the question this was is not going to work. Am I worried? No. I never worry about anything.
2006-10-02 17:45:51 · answer #3 · answered by Kokopelli 7 · 0⤊ 1⤋
Hi > if by material in the old universe, it is hydrogen, with a loveky number of 1 on the scheme of things, when it comes to mass.
Simple, really I suppose.
Bob
2006-10-02 18:03:18 · answer #4 · answered by Bob the Boat 6 · 0⤊ 0⤋
If you mean in terms of density, Hydrogen is the lightest element with a density of 0.09kg/cubic metre
2006-10-02 17:52:09 · answer #5 · answered by The Great Ricardo 2 · 0⤊ 0⤋
Given that you really mean strength to weight ratio, then a spiders web comes pretty high up the scale.
2006-10-02 17:59:51 · answer #6 · answered by Billy 2 · 1⤊ 0⤋
£ 4 £ = the same
2006-10-02 17:44:51 · answer #7 · answered by dobbie 2 · 1⤊ 1⤋
They would all weigh the same.
Hydrogen is the lightest element.
2006-10-02 17:57:15 · answer #8 · answered by monkeymanelvis 7 · 1⤊ 1⤋
pound for pound they all weigh the same !
2006-10-02 17:44:08 · answer #9 · answered by charlotterobo 4 · 1⤊ 1⤋
titanium is strongest regardless of weight
2006-10-02 18:23:38 · answer #10 · answered by Anonymous · 0⤊ 0⤋