ALLOY 4J36 Low expansion alloy
Features
- 4J36 alloy is an iron-nickel alloy with 35%~37% nickel content.
- 4J36 alloy has a low coefficient of expansion from cryogenic temperatures to about 500℃
- Retains good strength and toughness at cryogenic temperatures
Chemical Analysis
| Alloy | % | Fe | Ni | C | Mn | Si | S | P |
| 4J36 | Min. | Balance | 35 | - | 0.2 | - | - | - |
| Max. | Balance | 37 | 0. 05 | 0. 6 | 0. 3 | 0. 02 | 0. 02 |
Physical Properties
| Density | 8.1G/CM3 |
| Melting Range | 1430℃ |
The Min. Mechanical Properties under Room Temperature
| Alloy | Tensile Strength | Yield Strength | Elongation | Brinell Hardness |
| RM N/MM2 | RP0.2N/MM2 | A5% | HB | |
| Solution Treatment | 490 | 240 | 42 | ≤200 |
Coefficient of Linear Expansion (10-6℃)
| 20-100℃ | 20~300℃ | 20~400℃ | 20~450℃ | 20~500℃ | 20~530℃ | 20~600℃ |
| - | ≤1.5 | - | - | - | - | - |
- Applications
- Suitable for environmental temperature, make dimensional precision parts for instrumentation
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