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Lork Custom ASTM F15 Expansion Kovar Alloy Bar for Semiconductor Packaging 4j29 Precision Alloy Rod1
Other Alloys, Precision Alloy 4j29, Semiconductor Packaging 4j29 Precision Alloy Rod
LORK GROUP CO., LTD
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Product Description Product DescriptionIntroductionLORK is a alloy manufacturer with 20 years of manufacturing experience. Precision Alloy Kovar alloy is a vacuum melted, iron-nickel-cobalt alloy that is widely used in the electronics industry. Precision Alloy Kovar is a nickel-iron-cobalt, controlled-expansion alloy which contains 29% nickel. Precision Alloy its coefficient of expansion, which decreases with rising temperature to the inflection point, matches the expansion rate of borosilicate glasses and alumina ceramics.Precision Alloy Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This Precision alloy has found wide application in power tubes, microwave tubes, transistors, and diodes. In integrated circuits, Precision Alloy has been used for the flat pack and the dual-in-line package. Basic performance: Precision Alloy is divided into low-expansion alloy and fixed-expansion alloy, the latter is also known as sealing alloy. Precision Alloy Expansion alloy besides has the specific thermal expansion coefficient, according to the different USES also requires a good sealing property, weldability and corrosion resistance, machinability and cutting, and in the use of expansion characteristics caused by the temperature range there is no obvious change of phase transformation, Precision Alloy product is commonly bar, sheet, strip, wire and tube and so on.Precision Alloy Expansion alloy applications: Precision Alloy is widely used in glass, metal and ceramic sealing in avionics and instruments, electric vacuum industry and other electronic devices, electric light source and other fields.Precision Alloy 4J29 Applications? Electronics Industry? Avionics and instrumentation? Electric vacuum industry? Other electronic equipment? Sealing of glass, metal and ceramic in other fields Precision Alloy 4j29 Specifications GradeUNSWerkstoff Nr.Kovar 4j29K946101.3981Precision Alloy 4J29 Chemical CompositionGradeC%P%S%Mn%Si%Cu%Cr%Mo%Ni%Co%Fe%Kovar 4J29Max 0.03Max 0.020Max 0.020Max 0.50Max 0.30Max 0.20Max 0.20Max 0.2028.5-29.516.8-17.8Bal.Precision Alloy 4j29 Physical Properties GradeDensityMelting PointKovar8.17 g/cm31449°C Precision Alloy 4j29 Mechanical Properties GradeTensile Strength N/mm2Soft1/4 Hard1/2 Hard3/4 HardFull HardKovar Bar<570520-630590-700600-770>700Kovar Pipe<585585-725655-795725-860>860 Precision Alloy 4j29 Coefficient of Expansion AlloyLinear Coefficient of Thermal Expansion a,10-6/°C20-200°C20-300°C20-400°C20-450°C20-500°C20-600°C20-700°C20-800°CKovar5.95.35.15.36.27.89.210.2 DetectionProcessing Packaging & ShippingCompany ProfileFAQQ1: Do you accept the trial order ?A1: Yes,if we have the exactly size in stock.we can delivery even 1 piece/meter .Q2: Can I have free sample before making orders?A2: Yes,we can supply free sample as requirement,but buyer needs to pay the freight charges ,the freight fee will return to buyer after making order.Q3: How do you control the quality ?A3: MTC and PMI will be sent before shipment,any 3rd party inspection if need .Q4: How about your delivery time ?A4: Generally delivery time is 15 working days .Q5: How can I quickly get the price list ?A5: Directly click "chat now" or send us email with detail specifications,you will get the official price list in 1 hour .
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