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China, Chinese 29HK / Kovar /Rod Fe Ni alloy bar1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
AlloyOther Alloys29HK RodKovar Alloy Strip
Shanghai Tankii Alloy Material Co., Ltd.
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Product Description 29HK / Kovar Plate/Rod Fe Ni alloy bar General DescriptionKovar is a nominal 29%Ni-17%Co-54%Fe alloy that is a well-known glass-sealing alloy suitable for sealing to hard glasses. Kovar has a nominal expansion coefficient of approximately 5 ppm/°C and inflection temperature of ~450 °C (840 °F).Kovar (ASTM F15) has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This alloy has found wide application in power tubes, microwave tubes, transistors, and diodes. In integrated circuits, it has been used for the flat pack and the dual-in-line package.Chemical CompositionGradeC%P%S%Mn%Si% Cu%Cr%Mo%Ni%Co%Fe%KovarMax 0.03Max 0.020Max 0.020Max 0.50Max 0.30 Max 0.20Max 0.20Max 0.2028.5-29.516.8-17.8Bal.SpecificationsGradeUNSWerkstoff Nr.ASTMKovarK946101.3981F15 Physical PropertiesGradeDensityMelting PointKovar8.17 g/cm31449°CMechanical PropertiesGradeTensile Strength N/mm2Soft1/4 Hard1/2 Hard3/4 HardFull HardKovar Strip<570520-630590-700600-770>700Kovar Wire<585585-725655-795725-860>860Coefficient of ExpansionAlloyLinear Coefficient of Thermal Expansion ā,10-6/oC20-200oC20-300oC20-400oC20-450oC20-500oC20-600oC20-700oC20-800oCKovar5.95.35.15.36.27.89.210.2Size Range: *Sheet---Thickness 0.1mm~40.0mm, width:≤300mm,Condition: cold rolled(hot), bright, bright annealed *Round Wire---Dia 0.1mm~Dia 5.0mm,Condition: cold drawn, bright, bright annealed *Flat Wire---Dia 0.5mm~Dia 5.0mm,length:≤1000mm,Condition:flat rolled, bright annealed *Bar---Dia 5.0mm~Dia 8.0mm,length:≤2000mm,Condition:cold drawn,bright, bright annealed Dia 8.0mm~Dia 32.0mm,length:≤2500mm,Condition:hot rolled,bright, bright annealed Dia 32.0mm~Dia 180.0mm,length:≤1300mm,Condition:hot forging,peeled, turned, hot treated *Capillary---OD 8.0mm~1.0mm,ID 0.1mm~8.0mm,length:≤2500mm,Condition: cold drawn, bright, bright annealed *Pipe---OD 120mm~8.0mm,ID 8.0mm~129mm,length:≤4000mm,Condition: cold drawn, bright, bright annealed
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