It means the material is very ductile!!
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To calculate percent elongation with an equation: [(final length - initial length) / initial length] x 100 = percent elongation On a graph - To calculate percent elongation, draw a line to the x-axis from the point of fracture parallel to the straight line part of the graph. The extension at this point is then divided by the gauge length.
The answer depends on what causes the elongation: a stretching force (tension) or thermal expansion.
Percent means out of a 100
.6 percent is six tenths of one percent, or six in every thousand.
The original amount is doubled