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Invar 36 Plate for Containers for LNG tankers and Positioning devices
1 . Descriptions:
neal (optio Invar 36 is a low expansion alloy consisting of 36% Nickel,balance iron.Invar exhibits extremely low expansion around ambient temperatures,making invar alloy particularly useful in applications where minimum thermal expansion and high dimensional stability is required,such as in precision insturments like optoelectronic devices,optical and laser benches,electronics,and other kinds of scientific instruments.
2 . Chemical Composition:
| Substance | Symbol | % |
| Nickel | Ni | 36 |
| Chromium | Cr | 0.25 |
| Manganese | Mn | 0.50 |
| Silicon | Si | 0.25 |
| Carbon | C | 0.05 |
| Aluminium | Al | 0.10 |
| Magnesium | Mg | 0.10 |
| Zirconium | Zr | 0.10 |
| Titanium | Ti | 0.10 |
| Phosphorus | P | 0.020 |
| Sulpur | S | 0.020 |
| Iron | Fe | bal |
3 . Specification:
| Electrical resistivity | |
| ohm-cir mil/ft | 495 |
| microhm-mm | 820 |
| Tempeature coefficient of electrical resistivity | |
| per oF(70/212oF) | 0.0006 |
| per℃ (21/10℃) | 0.0011 |
| Heat treatment | Time/Temp/Cool | Application |
| Full Anneal | 1 hr at 1550oF or 2 hrs at 1350℃ air or oven cool | Following extensive forming or welding |
| Stress Relieve Anneal (optional) | 2hrs at 600 oF air or oven cool | 1.Between rough and final machining 2.Following minor weld repairs |
5.Applications
Positioning devices
Bimetal thermostats
Advanced composite molds for aerospace industry
Dimensionally stable instruments and optical devices
Containers for LNG tankers
6.Picture
