i dont get it why stretch the metal.
2007-11-06 07:17:39 · 3 answers · asked by Anonymous in Cars & Transportation ➔ Aircraft
Elongation numbers of a metal tell us how much a material will bend before it breaks. Titanium’s 20 – 30 % elongation beats out steel’s 10 – 15% and aluminum’s 6 – 12%. The lower the elongation number, the more brittle and breakable a material is. The higher the elongation number, the stronger the material is. So, the same amount of titanium stretched out will wear less than the same amount of steel or aluminum stretched out to the same.
2007-11-06 07:33:38 · answer #1 · answered by Anonymous · 0⤊ 0⤋
You'd tend to align the crystal structure in the direction you stretched it. It would be work hardened too. So you alter the physical properties, as well as the dimensions, which may be the real reason they are doing it.
2007-11-06 17:38:46 · answer #2 · answered by Chris H 6 · 0⤊ 0⤋
Main reason is to form it into complex shapes. With aluminum you can do this at room temperature. With titanium, usually has to be done hot.
2007-11-09 00:34:09 · answer #3 · answered by DT3238 4 · 0⤊ 0⤋