W.Nr 1.3981 UNS K94610 ASTM F15 Special Super Alloy Nickel Based Alloy Precision Alloy 4J29 Kovar Wi

Kovar alloy is a iron-nickel-cobalt, low expansion alloy whose chemical composition is controlled within narrow limits to assure precise uniform thermal expansion properties. Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials.Kovar 4J29 SpecificationGradeASTMUNSW.NrKovar 4J29F15K946101.3981Kovar 4J29Chemical compositionGrade%NiCrFeCoCuCMnSiPSMoKovar      4J29Min28.5Bal.16.8Max29.50.217.80.200.030.500.300.020.020.20Kovar 4J29 Coefficient of linear expansionGradea/10-6·K-1Kovar      4J29200-300?20-400?20-450?/4.6-5.25.1-5.5Kovar4J29 Size R
W.Nr 1.3981 UNS K94610 ASTM F15 Special Super Alloy Nickel Based Alloy Precision Alloy 4J29 Kovar Wi