Similar grade:
GB/T | UNS | AISI/ASTM | W.Nr |
4J36 | K93600 | Invar36 | 1.3912 |
chemical composition:
brand | % | Ni | Fe | C | Mn | Si | P | S |
4J36 | max | 35 | margin | 0.2 | ||||
min | 37 | 0.05 | 0.6 | 0.3 | 0.02 | 0.02 |
Physical properties:
density | 8.1 g/cm³ |
Melting point | 1430℃ |
The minimum mechanical properties of the alloy at room temperature：
Alloy grade | Tensile Strength Rm N/mm² | Yield Strength Rp0.2 N/mm² | Elongation A5 % | Brinell hardness HB |
Invar 36 | 490 | 240 | 42 | ≤200 |
Average linear expansion coefficient (10-6 ° C)
20~100℃ | 20~300℃ | 20~400℃ | 20~450℃ | 20~500℃ | 20~530℃ | 20~600℃ |
—— | ≤1.5 | —— | —— | —— | —— | —— |
Main characteristics
Low expansion alloy 4J36 has a low expansion coefficient and good plasticity at -60 degrees - 80 degrees atmospheric temperature change,
Application field
It is used to make components with a nearly constant size in the temperature range. It is widely used in radio, precision instruments, instruments and other industries, as standard measuring tools, microwave resonators, bimetallic wave layers and so on.
Instruments and other industries, do standard measuring tools, microwave resonators, bimetallic wave layers and so on.