Stress–strain curve showing typical yield behavior for nonferrous ... It is unique for each material and is found by recording the amount of deformation (strain) at ...Stress–strain curves of various materials vary widely, and different tensile ... into two broad categories; namely, the ductile materials and the brittle materials.
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Basically the ductile materials have a lower fracture point as compared to the ductile materials. This is why steel is more ductile than rubber. The mark of X shows the fracture point in the graph.
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