• Modison Metals Limited

Bi-Metal Contact Rivets

Modison Metals offers Bi-Metal Contact Rivets. These are made by putting the contact surface layer of silver/silver alloy, on a body of backing metal - electrolytic copper. The metallurgical bonding between these two materials makes these equally strong as a solid contact and still makes it most cost effective. The shank made up of electrolytic copper provides better thermal and electrical conductivity and also ensures longer life; and with increasing silver prices, lower silver content of these allows choice of larger contact compared to solid silver contact for getting improved current rating at mush lower cost. These are normally made with contact layer having half of the head thickness. To suit specific requirements, variation on this ratio is also possible within practical limits. Contact layer of these are made of silver alloys like silver-copper; silver nickel; silver cadmium or silver cadmium oxide. The various compositions of these alloys can be made as per the requirement specifications. These are supplied with silver-plating, as per the requirement.