Reduction in Area

1) In wiredrawing, the difference between the original cross sectional area and the subsequent area after passing through a drawing die. 2) In a tensile test, the difference expressed as a percentage of original cross sectional area of the test specimen to the minimum cross-sectional area measured after complete separation. 3) The difference, expressed as a percentage of original area, between the original cross-sectional area and that after straining the specimen.