Ceramic glass - 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.

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.