Project Description
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, %
Alloy | C | Mn | Si | P | S | Ni | Fe |
4J43 | ≤0.1 | 0.75-1.25 | ≤0.3 | ≤0.02 | ≤0.02 | 41-43 | Rest |
Average Linear Expansion Coefficient
Alloy | Heat treatment for sample | Average linear expansion coefficient a/10-6.K-1 |
20~400℃ | ||
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 |
Welding Product | – |
Others | YB/T5236-93 |
Features
There is a certain linear expansion coefficient in the given temperature range.
Applications
Core rod for making copper clad wire