Project Description
FeNiCr Glass Sealing Alloy
Alloy 46
Alloy 46 fixed expansion glass sealed iron nickel alloy has a linear thermal expansion coefficient similar to that of soft glass in a certain temperature range. It is mainly used for matching sealing with soft glass on electrical components.
Equivalent Grades
| GB | ГОСТ | ASTM | UNS | DIN | W.Nr. | NF | BS | JIS | SS |
| 4J49 | 47НХР | Alloy 46 Carpenter 456 | K94600 | Vacovit 465 Vacovit 485 | – | FeNi46Cr5 | – | – | – |
Chemical Composition, %
| Alloy | C | Mn | Si | P | S | B | Al | Ni | Cr | Fe |
| 4J06 | ≤0.05 | ≤0.25 | ≤0.3 | ≤0.02 | ≤0.02 | – | ≤0.02 | 41.5-42.5 | 5.5-6.3 | Rest |
| 4J47 | ≤0.05 | ≤0.4 | ≤0.3 | ≤0.02 | ≤0.02 | – | – | 46.8-47.8 | 0.8-1.4 | Rest |
| 4J49 | ≤0.05 | ≤0.4 | ≤0.3 | ≤0.02 | ≤0.02 | ≤0.02 | – | 46-48 | 5.0-6.0 | |
| 4J6A | ≤0.05 | 0.15-0.3 | 0.15-0.3 | ≤0.02 | ≤0.02 | – | ≤0.3 | 41.5-42.5 | 5.4-6.2 | Rest |
| 4J6B | ≤0.05 | 0.15-0.3 | 0.15-0.3 | ≤0.02 | ≤0.02 | – | 0.1-0.2 | 41.5-42.5 | 5.4-6.2 | Rest |
| 4J49A | ≤0.03 | 0.1-0.3 | 0.1-0.3 | ≤0.02 | ≤0.02 | – | 0.1-0.25 | 46-48 | 5.8-6.5 | Rest |
Average Linear Expansion Coefficient
| Alloy | Heat treatment for sample | Average linear expansion coefficient a/10-6.K-1 | |
| 20~300℃ | 20~400℃ | ||
| 4J06 | Heating to temperature between 1100℃±20℃ in a protective or vacuum atmosphere. Holding for 15min, cooling to 200℃ at a rate less than 5℃ per min, then air cooling | 7.6~8.3 | 9.5-10.2 |
| 4J47 | – | 8.1~8.7 | |
| 4J49 | 8.6~9.3 | 9.4~10.1 | |
| 4J6A | Heating 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 cooling | – | 9.5~10.2 |
| 4J6B | – | 9.6~10.2 | |
| 4J49A | – | 9.9~10.6 | |
Available Products and Specifications
| Rod, Bar, Wire and Forgings | YB/T5235-93, Q/SYY 7-1999, ГОСТ 10994-1974, ГОСТ 14080-78 |
| Plate, Sheet and Strip | YB/T5235-93, Q/SYY 7-1999, ГОСТ 10994-1974, ГОСТ 14080-78 |
| Pipe and Tube | YB/T5235-93, Q/SYY 7-1999, ГОСТ 10994-1974, ГОСТ 14080-78 |
| Welding Product | – |
| Others | YB/T5235-93, Q/SYY 7-1999, ГОСТ 10994-1974, ГОСТ 14080-78 |
Features
FeNiCr Glass Sealing Alloys take on a similar linear expansion coefficient with soft glass under a certain range of temperature.
Applications
They are mainly used for match sealing in soft glass in electronic vacuum industry. Among them, 4J49A, 4J6A can be applied for producing anode caps in kinescopes and connection frames in screen.
