Alloy: 4J42, 4J45, 4J50, 4J52, 4J54. Alloy:4J42, 4J45, 4J50, 4J52, 4J54.Availability:Strips, Bars, Wires, Flats.Typical characteristics:FeNi Glass Sealing Alloys take on a constant linear expansion coefficient under a certain range of temperature.Applications:They are mainly used for match sealing soft glass in ceramic. FeNi Glass Sealing Alloys