GB/T | AISI/ASTM | JIS | W.Nr |
4J29 | F15 | EMAS-1001 | 1.3912 |
chemical composition:
Brand | % | Ni | Cr | Fe | Co | Cu | C | Mn | Si | P | S | Mo |
4J29 | min | 28.5 | margin | 16.8 | ||||||||
min | 29.5 | 0.2 | 17.8 | 0.20 | 0.03 | 0.50 | 0.30 | 0.02 | 0.02 | 0.20 |
Average linear expansion coefficient (10-6 ° C:
20~100℃ | 20~300℃ | 20~400℃ | 20~450℃ | 20~500℃ | 20~530℃ | 20~600℃ |
—— | —— | 4.6~5.2 | 5.1~5.5 | —— | —— | —— |
4J29 alloy has a coefficient of expansion similar to that of hard glass in a wide temperature range (-80~450°C). In the electric vacuum industry, it is used to seal high-viscosity components with hard glass. Ceramic sealing. Name: Iron nickel cobalt glass sealing alloy. It has a thermal expansion coefficient similar to that of silicon-boron hard glass at 20 to 450 °C, and has a high Curie point and good low temperature structure stability. It is an iron nickel cobalt glass sealing alloy.