The ability of a material to deform plastically before fracture.

 The greatest stress that a material is capable of sustaining without any permanent deformation remaining upon complete release of stress.

 The amount of plastic or permanent deformation determined after fracture by realigning and fitting together the broken ends of the specimen.

 The elongation at the time of fracture, including both plastic and elastic deformation of the tensile specimen.  Usually determined by keeping an extensometer on the specimen through break.

 – A dimensionless value that is the change in length per unit length of the original linear dimension along the loading axis of the specimen.  This is frequently expressed in inches per inch or percent.

 The original length of that portion of the specimen over which strain or change in length is determined.

 The resistance of a material to deformation, particularly permanent deformation, indentation, or scratching.

 Within certain force limits, the stress in a material is proportional to the strain that produced it.

 Those properties of a material that are associated with the elastic and plastic reaction when force is applied.

 The ratio of the true strain in the width direction to the true strain in the thickness direction of a sheet material loaded beyond yield.