Project Description

FeNi Glass Sealing Alloy

Alloy

4J42, 4J45, 4J50, 4J52, 4J54

Similar Grade

GBГОСТ
4J4242Н

Specification

YB/T5235-93, Q/SYY 7-1999, ГОСТ 10994-1974, ГОСТ 14080-78

Product Forms

Sheet, Strip, Plate, Round Bar, Flat Bar, Forgings, Hexagon, Wire

Chemical Composition, %

AlloyCMnSiPSNiFe
4J42≤0.05≤0.8≤0.3≤0.02≤0.0241.5-42.5Rest
4J45≤0.05≤0.8≤0.3≤0.02≤0.0244.5-45.5Rest
4J50≤0.05≤0.8≤0.3≤0.02≤0.0249.5-50.5Rest
4J52≤0.05≤0.6≤0.3≤0.02≤0.0251.5-52.5Rest
4J54≤0.05≤0.6≤0.3≤0.02≤0.0253.5-54.5Rest

Average Linear Expansion Coefficient

AlloyHeat treatment for sampleAverage linear expansion coefficient a/10-6.K-1
20~300℃20~400℃20~500℃
4J42Heating to temperature between 900℃±20℃ in a protective or vacuum atmosphere. Holding for 1hour, cooling to 200℃ at a rate less than 5℃ per min, then air cooling4.0~5.06.5~7.5
4J456.5~7.26.5~7.2
4J509.2~10.09.2~9.9
4J529.8~11.09.8~11.0
4J5410.2~11.410.2~11.4

Feature

FeNi Glass Sealing Alloys take on a constant linear expansion coefficient under a certain range of temperature.

Application

They are mainly used for match sealing soft glass in ceramic.