Reduction of Area Z
The reduction of area Z is a parameter of the tensile test performed for the characterization of the ductility of metallic materials.
Description Calculation Application examples Testing machines
Determining the reduction of area Z
In tensile tests on ductile materials, localized necking occurs after the tensile strength is reached. The material ultimately also breaks in this area. The largest change in cross-sectional area in relation to the initial cross-section So is referred to as the reduction of area Z. The reduction of area Z value is indicated as a percentage.
Typical applications
Round specimen
Measuring the reduction of area on a round metal specimen
Flat specimen
Measuring the reduction of area on a flat metal specimen
Automated reduction of area measurement
When using an automated testing system, the metal specimen is measured by the robot
