It is suggested that a metal-cutting test can be utilized as a high-strain-rate property test at strains larger than those normally achievable in conventional tests. The strain and strain-rate analysis is performed on the chip root of a composite specimen whose interface records the necessary information in terms of deformed grid lines which become streamlines. In the stress analysis, it is necessary to assume that the shear stress calculated from transducer forces is constant throughout a thin shear zone observed at the higher cutting speeds. The results can be converted into effective-stress and effective-strain data and should permit the establishment of stress, strain rate, strain, and temperature relationships for materials at the larger strains and at the higher strain rates.