Expansion Alloys Rods, Bars, Sheets, Plates, Strips, Foils, Wires

 

Expansion Alloy Rod, Bar, Sheet, Plate, Strip, Foil, Wire

 

Kovar Alloy

Kovar alloy, ASTM F15, Nilo-K,UNS K94610(FeNi29Co17),Chinese 4J29

Kovar Alloy, is a controlled expansion alloy. It is a Nickel Iron alloy with 29% Nickel, 17% Cobalt and the remaining balance is Iron.

Forms: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

 

DESCRIPTION

Kovar Alloy is a vacuum melted, iron-nickel-cobalt, low expansion alloy whose chemical composition is controlled

within narrow limits to assure precise uniform thermal expansion properties. Extensive quality controls are employed

in the manufacture of this alloy to ensure uniform physical and mechanical properties for ease in deep drawing,

coining, stamping and machining.

 

APPLICATION

Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials.

This alloy has found wide use in application where high reliability is a necessity. In power tubes, microwave tubes,

transistors, diodes, inter-grated circuits and has been used for the flat pack and the dual-in-line package.

 

Cross Reference

Russia USA UK Japan France Germany

29HK Kovar Nilo K -

Dilver P0 Vacon 12

29HK-?? Rodar Teachallony Glass 29-17 Teleaseal -

Dilver P1 Silvar

 

Invar Alloy

Invar alloy,ASTM F1684,UNS k93600(FeNi36),Chinese 4J36

A Nickel-Iron, low expansion alloy containing 36% Nickel. It maintains nearly constant dimensions over the range

of normal atmospheric temperatures.

Forms: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

 

DESCRIPTION

Invar (also know as Invar 36, NILO 36, Pernifer 36, and Invar Steel) is a low expansion alloy consisting of 36% Nickel, balance Iron.

Invar Alloy exhibits extremely low expansion around ambient temperatures, making Invar Alloy particularly useful in applications

where minimum thermal expansion and high dimensional stability is required, such as in precision instruments like optoelectronic

devices, optical and laser benches, electronics, and other kinds of scientific instruments.

 

APPLICATION

This alloy has been used for applications where dimensional changes due to temperature variation must be minimized such as in

radio and electronic devices, aircraft controls, optical and laser system, etc.

 

Cross Reference

Russia USA Japan France Germany U.K.

36H Invar Cactus LE Invar Standard Vacodil36 Invar

Nilvar Nilo36

36H-?? Unipsan36 Fe-Ni36 Nilos36 36Ni

 

Super Invar

Super Invar ,A low expansion alloy consisting of 32% Nickel, 4% Cobalt, and balance Iron. Super Invar Alloy exhibits

minimum thermal expansion at room temperatures (one half of Invar Alloy), as well as thermal expansion properties

less than that of Invar Alloy in the 67/203°F (-55/95°C) temperature range.

Forms: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

 

DESCRIPTION

Super Invar ,A low expansion alloy consisting of 32% Nickel, 4% Cobalt, and balance Iron. Super Invar Alloy exhibits

minimum thermal expansion at room temperatures (one half of Invar Alloy), as well as thermal expansion properties

less than that of Invar Alloy in the 67/203°F (-55/95°C) temperature range. The minimal expansion of Super Invar over

this range of temperatures, makes this alloy useful in many applications including structural components and

substrates in instrument systems requiring precision measurements.

 

APPLICATION

Optical instruments . Telescopes . Laser instruments and equipment . Ring laser gyroscopes . Laser benches .

Positioning devices . Metrology devices . Structural components . Substrates in instrument systems requiring

precision measurements, and other applications that require lower expansivity than Invar Alloy provides.

 

Cross Reference

Russia USA Japan France

32H?? Super-invar SI Invar

32H?-B? Super-Nilvar Superieur

 

Ceramvar Alloy

Ceramvar alloy, ASTM F1466,(Ni27Co25),Chinese 4J33/4J34

CERAMVAR ALLOY or we call iron-nickel-cobalt alloys, nominally 27% nickel, 25% cobalt and 48% iron, in the

forms of wire, rod, bar, strip, sheet, and tubing, intended primarily for brazed metal-to-ceramic seals with

alumina ceramics, for vacuum electronic applications. Unless otherwise indicated.

Forms: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

 

DESCRIPTION

CERAMVAR ALLOY or we call iron-nickel-cobalt alloys, nominally 27% nickel, 25% cobalt and 48% iron, in the forms of

wire, rod, bar, strip, sheet, and tubing, intended primarily for brazed metal-to-ceramic seals with alumina ceramics,

for vacuum electronic applications. Unless otherwise indicated. When tested, the alloys shall comply to specified

requirements for chemical composition, surface finish, temper, grain size, tensile strength, hardness, inclusion content,

thermal expansion, transformation, and dimensions.

 

APPLICATION

Glass to metal ,vacuum electronic , metal-to-ceramic seals.

 

Cross Reference:

Russia Japan

33HK(Ni33Co17) -

 

70HB

Non-magnetic constant expansion ceramic-sealing alloy. 70HB applies to gyroscope and vacuum electronic devices in the

non-magnetic ceramic sealing material.

 

DESCRIPTION

70HB has medium line thermal expansion coefficient at room temperature to 600 ? range.No magnetic, corrosion resistant,

at the same time with high strength and toughness.

 

APPLICATION

Apply to gyroscope and vacuum electronic devices in the non-magnetic ceramic sealing material.

 

Alloy 42

Alloy 42,ASTM F30,UNS k94100,(Fe-42Ni) ,Chinese 4J42

42 Alloy, a low expansion alloy, is very similar to Invar 36 with a slightly different Coefficient of Thermal Expansion.

This nickel-iron alloy is ideal forlid, lead frames, stencil/etching, telecommunications and aircraft industry,

offering a more affordable alternative to Kovar when a tight seal is not required.

Forms: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

 

DESCRIPTION

42 Alloy, a low expansion alloy, is very similar to Invar 36 with a slightly different Coefficient of Thermal Expansion.

This nickel-iron alloy is ideal forlid, lead frames, stencil/etching, telecommunications and aircraft industry,

offering a more affordable alternative to Kovar when a tight seal is not required. 42 Alloy has a virtually constant low rate

of thermal expansion at temperatures up to approximately 650°F (343°C). Easily machined and formed hot or cold,

42 Alloy is also used extensively in the medical, electronics and automotive industries.

 

APPLICATION

Glass to metal seals for a wide variety of electronic tubes, hermetic packages, and automotive and industrial lamps.

 

Cross reference:

Russia U.S.A UK Japan France Germany

42H Glass Sealing 42 Uniseal 42 Nilo42 YEF42 NSD N42 Vacogil42 Nilo42

 

Alloy 46

Alloy 46,UNS K94600,(Fe-46Ni),Chinese 4J46

Consisting of 46% nickel and iron balance, 46 Alloy is a controlled expansion alloy used mostly in electronic applications,

especially for glass and ceramic seals. Alloy 46 is also known as Premier 462, NILO 464, and Glass-Seal 461.

Forms: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

 

DESCRIPTION

Consisting of 46% nickel and iron balance, 46 Alloy is a controlled expansion alloy used mostly in electronic applications,

especially for glass and ceramic seals. Alloy 46 is also known as Premier 462, NILO 464, and Glass-Seal 461.

 

APPLICATION

Glass to metal seals for electronic tubes and hermetic devices.

 

Cross Reference:

Russia USA France

46 Fe-Ni alloy46 N46

 

48 Alloy

48 ALLOY is A controlled expansion alloy, consisting of 48% Nickel, balance Iron; used in a variety of electronic application,

especially for glass and ceramic seals.

Forms: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

 

DESCRIPTION

48 ALLOY is A controlled expansion alloy, consisting of 48% Nickel, balance Iron; used in a variety of electronic application,

especially for glass and ceramic seals.

 

APPLICATION

Glass to metal seals for variety of electronic tubes and hermetic devices.

 

Cross Reference:

Russia USA UK France ISO

H47X Fe-Ni alloy 48 N48 N485/N48 FeNi48

 

52 Alloy

Alloy 52,ASTM F30,UNS K95050,(Fe-50Ni),Chinese 4J50

Alloy 52 is a 52% nickel-iron alloy developed for glass-to-metal seals for some of the soft glasses and some ceramics.

Produced with good machining properties, it’s manufactured in a controlled environment under controlled conditions.

Forms: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

 

DESCRIPTION

Alloy 52 is a 52% nickel-iron alloy developed for glass-to-metal seals for some of the soft glasses and some ceramics.

Produced with good machining properties, it’s manufactured in a controlled environment under controlled conditions.

 

APPLICATION

Glass to metal seals for electronic tubes, automotive and industrial lamps, and specialty hermetic devices.

 

Cross Reference:

Russia USA UK Japan France Germany

50H FeNi50 Nilo51 NS-1 N50 Vacovit500

 

54K9X Alloy

 

CROSS REFERENCE

CN Russia UK France Germany

Co54Cr9 54K9X Darwin410 ADR(Ni39-Fe) Nilo40

 

Alloy 27

 

DESCRIPTION

Alloy 27, it’s glass-to-metal sealing and iron-chromium alloy. Nominally 28 % chromium, in strip, bar, wire, and rod forms

intended primarily for sealing to glass in electronic applications. UNS K92801 should only be considered for use at service

temperatures below 300°C. The alloy is prone to sigma phase formation at temperatures close to 620°C, and exhibits brittle

mechanical behavior after prolonged exposures at temperatures close to 475°C.

 

Alloy 426

Sealmet HC-4, alloy 426, ASTM F31, UNS k94760, (Fe-42Ni-6Cr), Chinese 4J6

A controlled expansion alloy, consisting of 42% Nickel, 6% Chromium, balance Iron; used in a wide variety of electronic

applications, especially for glass seals.

Forms: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube

 

DESCRIPTION

A nickel-chromium-iron which has been developed to match the thermal expansion characteristics of 0120 glass.

An additional advantage of this alloy for glass-to-metals seals is the tight dark green oxide coating formed by

wet hydrogen annealing at 1900/2200°F (1038/1204°C) for one hour. The oxide tends to flux with the glass and

make it a vacuum tight seal if the surfaces are clean. To obtain the necessary surface cleanliness, pickle in muriatic acid.

 

APPLICATION

Glass to metal seals for a variety of electronic tubes and CRT tubes. It is supplied in wire form for compression seals.

 

Cross Reference:

Russia USA Japan France Germany

H42 X 6 42Ni-6Cr Carpenter426 Sylvania4 Sealmet4 NRS-1 YEF-426 SNC ASV(426) Ni42Cr6 Vacovit426 (NiCr426

 

 

 

 

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If you have any requirement of above items, please feel free to contact us

 

Regards,

 

CONTACT PERSON :

 

MUKESH SHAH

Director

Mobile No. 0091 – 9820292499

Email – marketing@rolexmetals.com

 

 

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