Iron Nickel Cobalt Alloy 4J29 Kovar Bars

Kovar material property data sheet - product availability and request a quote !
Iron-Nickel-Cobalt Sealing Alloy
Available forms StripThickness:0.1mm-3.5mmPlateThickness:3.5mm-40.0mmBarDia5.0mm-Dia180mmPipeOD120mm-8.0mm.ID8.0mm-129mmCapillaryOD8.0mm-1.0mm,ID0.1mm-8.0mmWireDia0.1mm-Dia5.0mm
Kovar Products
Stocks Kovar© in a variety of forms and dimensions.Below are most of the standard stock form/sizes.
If you do not see the size or forms of kovar that you require,please send us your inquiry. We can tailoring your unique requirements with your expected specifications,and also we are manufacturer,Small quantity accepted, if we have stocks, can delivery as small as 1 kilogram to your specification. Kovar Rod Kovar Rod (Diameter)Kovar Rod (Diameter)5.1mm5.8mm8.5mm8.6mm10.0mm14.0mm16.0mm17.0mm18.0mm20.0mm22.0mm25.0mm28.0mm30.0mm32.0mm34.0mm35.0mm40.0mm45.0mm55.0mm65.0mm73.0mm80.0mm95.0mm110.0mm Kovar Wire Kovar Wire (Diameter)Kovar Wire (Diameter)0.5mm1.05mm1.2mm2.2mm2.4mm2.5mm3.0mm3.5mm4.6mm Kovar Strip / Coil Kovar Strip / Coil ThicknessKovar Strip / Coil Thickness0.2mm0.3mm0.35mm0.5mm1.0mm1..5mm1.6mm Kovar Plate Kovar Plate ThicknessKovar Plate Thickness2.0mm2.6mm3.0mm3.2mm4.5mm5.0mm5.6mm6.0mm6.5mm7.0mm7.2mm8.0mm9.0mm10.0mm12.0mm14.0mm16.0mm55.0mm91.0mm103.0mm150.0mm
Notes :
If you need material urgently OR small quantity,Please send us a inquriy .We are Manufacturer,
There are large Number of Recently material available in Stocks.also we are manufacture custom-made order for 30Kg and up.(some material are allowed 10-15Kg)as few as two weeks. Products Application
It is applied to hard glass to metal seals. Description
Kovar Alloy©is avacuum 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. Parameter
TABLE 1Cross Reference Countryinternational GradeRussia(ΓOCT)29HKUSA(ASTM)KovarJapan(JIS)KV-1UK(BS)Nilo KFrance(NF)DilverGermanyVacon 12China(GB)4J29
TABLE 2 Chemical Requirement ElementsC≤P≤S≤Mn≤Si≤Cu≤Cr≤Mo≤NiCoFeComposition%0.030.020.020.50.30.200.200.2028.5-29.516.8-17.8Remainder
Notes:
The shape and dimensions of the alloys are in compliance with YB/T5231-2005
TABLE 3 Physical Requirement PropertyTargetSpecific Gravity 8.36DensityIb/cu in0.302kg/cu m 8359Thermal conductivityBtu-in/ft2/hr/ºF120W/m-K 173Curie temperatureºF 815ºC435melting PointºF 2640ºC1450Modulus of elasticityPsi x 10 -620Psi x106 138Electrical resistivityohm-cir mil/ft 294microhm-mm 490
TABLE 4 Tensile Strength of wire SymbolStatusTensile Strength/MPaRannealed<5851/4 I1/4hard585-7251/2 I1/2hard655-7953/4 I3/4hard725-860Iunannealed>860
TABLE 5Tensile Strength of strip SymbolStatusTensile Strength/MPaRannealed<5701/4 I1/4hard520-6301/2 I1/2hard590-7703/4 I3/4hard600-770Iunannealed>700
TABLE 6 Hardness of Deep Stamping Strip stateThicknessHardness,HVDeep Stemping>2.5≤170≤2.5≤165
TABLE 7 Coefficient of Linear Expansion Heat Treatment of the Sample20-300ºC20-400ºC20-450ºC
Heat to temperature of 900±20℃in the hydrogen,hold for 1h;re-heat to 1100±20℃, hold for 15 min.;cooled to 200℃at a rate less than 5℃/min4.6-5.25.1-5.5
TABLE 8 Coeffcient of Linear Expansion Sample(Dia6-10mm)Sample(Dia6-10mm)25.04mm24.79mm
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1.Custom-size Sample
Our factory provide free samples (not include freight).Small Pieces with envelope bags, low cost and short delivery time.
(we have long time cooperation with delivery companies ,low freight charge guaranteed)
2.Small quantity ,short delivery time.
Small quantity accepted, if we have stocks , delivery as small as 1kilogram to your specification.delivery time within 5 working days.We also manufacture custom-made orderfor 30Kg and up.(some materials are allowed 10-15kg) as few as 2 weeks.
3. Quality
We are very carefully balance the quality, ISO9001:2008 ,SGS,CQC approved since 2000.
(The whole process from raw material to finished products can be traced.)
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We provide customersolutions to your applicationwith our uniquetechnologiesand well versed knowledge of materials acquired throughour experience of manufacturing 1,000 items.
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We providevarious of High-Precision alloy all over the worldand manufacture appropriate products to your needs.
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