Glass seal - Import export

Our Nickel-Iron-Cobalt alloys are engineered to ASTM F15 standards for sealing materials and their specified coefficients of thermal expansion. These materials used primarily for making hermetic seals with harder glasses and ceramics (lids for hybrid packages). Nickel-Iron-Cobalt alloys include F-15 alloy, Kovar ® and Rodar ®. The low levels of impurities in the material reduce the chance of out-gassing over time; a critical role in maintaining the hermetic seal.

Our Nickel-Iron alloys are engineered to the ASTM F30 standards for sealing materials and their specified coefficients of thermal expansion. These materials are generally used as the sealing material to bridge the difference between two materials of differing expansion rates during heating and to maintain a hermetic seal. These Nickel-Iron Strip Products are generally used in glass to metal sealing applications ranging from light bulbs to hermetically sealed integrated circuits as well as electrical applications such as switch-gear connections and reed switch systems. Nickel Iron alloys include Invar®, alloys 42, 46, 48 and 52. Others available on request.

Rodar® is an Iron-Nickel-Cobalt alloy with an unique linear thermal expansion coefficient. It is also stable to cryogenic temperatures. This combination of characteristics has prompted its application in electrical package sealing of glass/metal and ceramic/metal. Rodar® can be formed and deep drawn from the annealed temper. A 1/8 hard temper is optimum for heavy piercing.The material can be joined to other metals by welding, brazing, and soldering. The joint design must consider that Rodar® has a lower expansion coefficient than most other metals. Available Sizes: Rodar® is available from Hamilton Precision Metals as strip product in thicknesses from 0.001” to 0.060” (0.0254 mm to 1.524 mm) and width up to 12.0” (304.8 mm). The material conforms to ASTM F15, AMS 7728 and UNS K94610.

Copper 102 is an oxygen-free copper with extremely high electrical conductivity and good formability. These characteristics make it particularly useful for electrical connectors. Copper 102 can be deep-drawn from the annealed temper.It is corrosion resistant in normal atmosphere and water. A thin adherent oxide film forms at elevated temperatures which prevents particle contamination and enhances glass to metal seals. The Copper 102 can be readily soldered and brazed. The absence of oxygen makes welds free of inclusions. Available Sizes: Copper 102 is available from Hamilton Precision Metals as strip product in thicknesses from 0.0005” to 0.010” (0.0127 mm to 0.254 mm) in widths up to 12.0” (304.8 mm). The material conforms to ASTM B 152 and UNS C10200. It is also available in thickness less than 0.0005” (0.0127 mm) in widths up to 4.000” (101.6 mm) maximum.