Compression glass lead-in arrangement

A housing formed of a metal body and having an opening therethrough and a conductor extending through said opening, and having a lead-in arrangement comprising a glass bead sealing said opening wherein said conductor passes through said glass bead, wherein said lead-in arrangement is produced by:

• (A)
• (i) heating said metal body to a high temperature;
• and
• (ii) placing said glass, in molten form, and said conductor in said opening such that said molten glass seals said opening and said conductor passes through said molten glass and through said opening, wherein the high temperature to which said metal body is heated is at least as high as the temperature of said molten glass, and the temperature of said molten glass is less than or equal to the solidus temperature of the metal, wherein said glass has a coefficient of expansion which is lower than the coefficient of expansion of said metal, and said metal body is formed of a metal alloy comprising 0.1-10% Ni, 0.1-12% Sn, and 0-0.4% Mn by weight, with the balance being Cu which possesses a hardening effect upon cooling, and
• (B) cooling said metal body and said molten glass in said opening, at a rate which is less than the rate at which the expansion characteristic of glass is altered, and which is high enough to permit said metal to exhibit said hardening effect upon cooling.