Measuring the elastic properties of fine wire

The elastic moduli of fine wires made from MP35N and 304SS used in implanta ble biomedical devices are assumed to be the same as those published in the literature. However, the cold working required to manufacture the wire sig nificantly alters the elastic moduli of the material. We describe three exp eriments performed on fine wire made from MP35N and 304SS. The experimental ly determined Young's and shear modulus of both wire types were significant ly less than the moduli reported in the literature. Young's modulus differe d by as much as 26%, and the shear modulus differed by as much as 14% from reported values. (C) 2001 John Wiley & Sons, Inc.