Project Description

FeNiCoCu Sealing Alloy

Alloy

S4J38A

Equivalent Grade

GBГОСТ
S4J38A38НКД

Specification

ГОСТ 10994-1974, ГОСТ 14080-78

Product Forms

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

Chemical Composition, %

AlloyCMnSiPSNiCoCuFe
S4J38A≤0.05≤0.015≤0.15≤0.02≤0.0237.5-38.54.5-5.54.5-5.5Rest

Average Linear Expansion Coefficient

AlloyHeat treatment for sampleAverage linear expansion coefficient a/10-6.K-1Inflection point /℃
S4J38AHeating to temperature between 850~900℃ in a protective or vacuum atmosphere. Holding for 1hour, cooling to 400℃ at a rate less than 300℃ per hour, then air cooling20~400℃≥390
7.0~9.0