Plot of hardness change versus temperature as an indication of stability of lead frame materials during assembly processes. Yield strength of each alloy before thermal exposure is shown in parentheses.

Weight-loss of specimens exposed in NaCl solution atmosphere of Cu0.36Cr, Cu, Cu0.36Cr0.11Zr , CuZr0.15 (Note: NaCl atmospheric corrosion test in salt spray chamber (in salt mist of 50 g NaCl/l) in the temperature of 35°C, in accordance with ISO 3768-1976 standard) .

Plot showing stress for 100 hour rupture life at several temperature - powder metallurgical alloy

Plots of cumulative volume loss vs time for copper and its alloys under 20 N at (a) 0 A, (b) 30 A and (c) 50 A. (Note: Cu-wire cold drawn, copper alloys – age hardened).  Examinations were performed by pin-on-disc tribometer. The negative sample was the S30400 disc made of stainless steel. Examinations were carried out in an air atmosphere with the velocity of 31 km/h and under loading of 10 – 20 N on a roll sample at the diameter of 13 mm and length of 13 mm) .

Plots of cumulative volume loss vs time for copper and its alloys under load of (a) 10 N and (b) 15 N at 50 A. (Note: Cu-wire cold drawn, copper alloys – age hardened).  Examinations were performed by pin-on-disc tribometer. The negative sample was the S30400 disc made of stainless steel. Examinations were carried out in an air atmosphere with the velocity of 31 km/h and under loading of 10 – 20 N on a roll sample at the diameter of 13 mm and length of 13 mm) .

Sliding wear resistance for copper and its alloys under 20 N with and without current.  (Note: Cu-wire cold drawn, copper alloys – age hardened).  Examinations were performed by pin-on-disc tribometer. The negative sample was the S30400 disc made of stainless steel. Examinations were carried out in an air atmosphere with the velocity of 31 km/h and under loading of 10 – 20 N on a roll sample at the diameter of 13 mm and length of 13 mm)

Sliding wear resistance for various alloys under 20 N with and without current.  (Note: Cu-wire cold drawn, copper alloys – age hardened).  Examinations were performed by pin-on-disc tribometer. The negative sample was the S30400 disc made of stainless steel. Examinations were carried out in an air atmosphere with the velocity of 31 km/h and under loading of 10 – 20 N on a roll sample at the diameter of 13 mm and length of 13 mm) .

Plots of wear rate vs load for copper and its alloys at (a) 0 A, (b) 30 A and (c) 50 A. (Note: Cu-wire cold drawn, copper alloys – age hardened). Examinations were performed by pin-on-disc tribometer. The negative sample was the S30400 disc made of stainless steel. Examinations were carried out in an air atmosphere with the velocity of 31 km/h and under loading of 10 – 20 N on a roll sample at the diameter of 13 mm and length of 13 mm) .

Plots of wear rate vs current for copper and its alloys under (a) 10 N, (b) 15 N and (c) 20 N. (Note: Cu-wire cold drawn, copper alloys – age hardened).  Examinations were performed by pin-on-disc tribometer. The negative sample was the S30400 disc made of stainless steel. Examinations were carried out in an air atmosphere with the velocity of 31 km/h and under loading of 10 – 20 N on a roll sample at the diameter of 13 mm and length of 13 mm) .

The maximum bending load for 107 cycles without crack is measured. Dependent on the temper class it is approximately 1/3 of the tensile strength

Bending properties of CuZr0,15 a)-90° bending, b)-180° bending