Dumet Core Wire Alloy
Dumet / 4J43
Fixed expansion glass sealed Fe Ni alloy has a certain thermal line expansion coefficient in the range of 20-400 ℃. It mainly produces Dumex core sealed with soft glass on electric vacuum element.
Chemical Composition, %
Average Linear Expansion Coefficient
|Alloy||Heat treatment for sample||Average linear expansion coefficient a/10-6.K-1|
|4J43||Heating 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 cooling||6.3~7.2|
Available Products and Specifications
|Rod, Bar, Wire and Forgings||YB/T5236-93|
|Plate, Sheet and Strip||YB/T5236-93|
|Pipe and Tube||YB/T5236-93|
There is a certain linear expansion coefficient in the given temperature range.
Core rod for making copper clad wire