Material for Electrical/Electronic Use

Abstract

The present invention provides an electrical/electronic material which has low contact resistance, excellent corrosion resistance, high hardness, high flexing strength and excellent processability. The electrical/electronic material is characterized by being composed of 20-40% by mass of Ag, 20-40% by mass of Pd, 10-30% by mass of Cu and 1.0-20% by mass of Pt and having a hardness of 340-420 HV at the time of precipitation hardening after metal forming and an adequate flexing strength.

1 . An electrical and electronic material comprising an alloy containing 20-40 mass percent Ag, 20-40 mass percent Pd, 10-30 mass percent Cu, and 1.0-20 mass percent Pt, having a hardness of HV 340-420 after plastic forming and precipitation hardening treatment is processed to said material, and having a high folding strength. 
     
     
         2 . An electrical and electronic material comprising the alloy of  claim 1  to which 0.1-10 mass percent Au, and 0.1-3.0 mass percent of at least one of Re, Rh, Co, Ni, Si, Sn, Zn, B and In are added as additive elements to improve the properties according to the usage.