CARPENTER GLASS SEALING 52 alloy has a virtually constant rate of thermal expansion to 1050 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. Filing Code: FE-101. Producer or source: Carpenter.

KOVAR A is a cobalt, nickel, iron alloy recommended for sealing into hard glass. Has similar expansion curve as glass, makes firm bond between metal and glass, is easy to machine and form, and has high resistance to thermal shock. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-3. Producer or source: Carborundum Company, Refractories Division.

RODAR is a cobalt, nickel, iron alloy recommended for sealing into hard glass. Has similar expansion curve as glass, makes firm bond between metal and glass, is easy to machine and form, and has high resistance to thermal shock. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-6. Producer or source: Wilbur B. Driver Company.

UNISEAL 42 is a closely controlled thermal expansion iron alloy used for glass-to-metal and metal-to-ceramic seals. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, joining, and surface treatment. Filing Code: Fe-44. Producer or source: Cyclops Corporation.

UNISEAL 52 is a nickel-iron alloy produced for glass-to-metal seals with higher-than-normal thermal expansion glasses such as Types O120 and 9010. It is used in hermetically-sealed magnetic dry reed switches, compression seals, and ceramic seals where expansion is required to be almost linear to 1000 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-156. Producer or source: Cyclops Corporation.

UNISEAL 29-17 is a controlled expansion iron-base alloy containing nickel and cobalt. It is widely used for glass-to-metal seals with borosilicate glasses commonly employed in electronic power tube envelopes. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-45. Producer or source: Cyclops Corporation.

THERLO, also known as D-H Alloy No. 373, is an iron-nickel-cobalt alloy ideally suited for sealing to glass. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-11. Producer or source: Driver-Harris Company. Originally published July 1956, revised August 1961.

SEALVAR is an iron-nickel-cobalt strip alloy primarily used for making hermetic seals with harder glasses and ceramics. It is distinguished by its high purity, closely controlled chemistry and very low carbon level. The alloy meets specified ASTM F 15-78 (83) expansion coefficients. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. Filing Code: FE-119. Producer or source: AMETEK Specialty Metal Products.

N426 is an Fe-Ni-Cr alloy for sealing both glass and ceramics. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming. Filing Code: FE-145. Producer or source: Metalimphy Precision Alloys.

CARPENTER GLASS SEALING 42 has wide-ranging applications in glass-to-metal and ceramic-to-metal sealing. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, joining, and surface treatment. Filing Code: FE-102. Producer or source: Carpenter.

N475 and N485 are Fe-Ni-Cr sealing alloys used for bonding soft leads, lead-free glasses, and ceramics. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming. Filing Code: FE-146. Producer or source: Metalimphy Precision Alloys.

Carpenter Glass Sealing 27 is a ductile chromium-iron alloy that has been used for strong glass-to-metal seals in electronic and vacuum tubes, and incandescent and fluorescent lamps. It exhibits no phase transformation up to 1150 deg C (2100 deg F). This datasheet provides information on composition, physical properties, and elasticity. It also includes information on corrosion resistance. Filing Code: FE-136. Producer or source: Carpenter Technology Corporation.

TECHALLOY GLASSEAL 29-17 is an iron-nickel-cobalt alloy with a thermal expansion rate that is unlike most metals and closely matches the thermal expansion characteristics of borosilicate glass, PYREX glass, and other similar low-expansion materials. It assures precisely controlled expansion properties that are ideal for usage in glass-to-metal seals. Typical applications are transmitting tubes, relays and electronic power tube envelopes. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-60. Producer or source: Techalloy Company Inc..

ALLOY 52 is a controlled-expansion alloy developed for glass-to-metal seals for some of the soft glasses and some ceramics. Its rate of expansion is almost constant up to approximately 1050 F (565 C). This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-226. Producer or source: Magnetics Specialty Metals Division.

TECHALLOY GLASSEAL 52 is a nickel-iron alloy produced for glass-to-metal seals with higher than normal thermal-expansion glasses such as Types 0120 and 9010, and certain ceramics. It has relatively good mechanical properties: a tensile strength of 80,000 psi and an elongation of 35%. It is used in a number of applications where expansion is required to be almost linear to 1000 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-260. Producer or source: Techalloy Company Inc..

The 50 Nickel-Iron Alloy is recommended for glass-to-metal seals. It is used with such glasses as Types 0120 and 9010 that have higher than normal thermal expansion and with certain ceramics. It is used in a number of applications where expansion must be almost linear to 1000 F. The 50 Nickel-Iron Alloy has relatively good mechanical properties; in fact, at room temperature it has a tensile strength of 80,000 psi and an elongation of 35%. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-276. Producer or source: Mills that produce iron-nickel alloys.

NILO K has been developed specifically for the production of matched glass-to-metal seals when using hard, borosilicate glass. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: Fe-16. Producer or source: Henry Wiggin & Company Ltd. Originally published August 1959, revised January 1966.

Olin Brass Alloy C10200 is an oxygen-free, high-conductivity copper. It is ideal for applications where extremely high electrical conductivity and resistance to hydrogen embrittlement are vital. Where glass-to-metal seals are required this material also provides the added advantage of developing an adherent, nonscaling oxide at elevated temperatures. This datasheet provides information on composition and physical properties. It also includes information on corrosion resistance. Filing Code: Cu-903. Producer or source: Olin Brass GBC Metals, LLC.

BLENDALLOY 25-5200 is a 52% nickel-iron controlled expansion, glass-to-metal sealing alloy recommended for dry reed switches and mercury wetted relays. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-136. Producer or source: Magnetics Inc..

Niromet 46 is a 46% nickel-iron alloy having low and controlled coefficient of expansion. It is recommended for metal-to-glass seals and terminal bands in vitreous enameled resistors. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Fe-39. Producer or source: Wilbur B. Driver Company.