Signed into law in 1974, the so-called "Double Nickel" was widely reviled and widely ignored before it was finally repealed in 1993.

Experienced 16 hours of CASS standard test, the plating layer, based on double post-plating nickel layers, still preserves perfect decorative appearance and shows good property of anti-erosion.

The double shear specimen was designed for the study of the creep behavior of nickel base single crystal superalloys at high temperature.