Static contact resistance of usual metal under high compressive stress and for high current densities

Abstract

Static contact resistance for all combinations of usual metals (cold‐drawn copper, brass, aluminum, duraluminum, mild steel, and stainless steel) are measured for stresses of up to 16 kg/mm² and current densities of up to 7.5 kA/mm². A decreasing resistance has been found for increasing compressive stress and increasing current intensity. Very low resistance values have been observed (0.02 mΩ mm²) with cold‐drawn copper and aluminum.