Table 1: Numerical data for Et, Ec, n and m for annealed copper and aluminium alloy N.P.8.

Aluminum Alloy N.P.8 Annealed Copper
Et, Ec 66.1 ksi 4,557434377.108 Pa 66.5 ksi 4.585013405.108 Pa
n, m 0.209-1 0.463-1