Malleable:
While ductility is the ability of a material to deform simply upon the application of a tensile force then malleability is the ability of a metal to exhibit huge deformation or plastic response whenever being subjected to compressive force. The Uniform compressive force causes deformation in the manner displays in Figure. A material contracts axially along with the force and expands laterally. Restraint because of friction at the contact faces induces axial tension on the outcome. Tensile forces operate around the circumference along with the lateral expansion or increasing girth. Plastic flow at the middle of the material also induces tension.
Figure: Malleable Deformation of a Cylinder Under Uniform Axial Compression
Thus, the criterion of fracture (that is, the limit of plastic deformation) for a plastic material is likely to depend on tensile rather than compressive stress. The Temperature modify might change the plastic flow mode and the fracture mode both.