Nice Price Fast Delivery High quantity astm 4J36 precision alloy steel sheet Invar36/FeNi36 alloy plate
Invar36, also known generically as FeNi36 (64FeNi in the US), is a nickel-iron alloy notable for its uniquely low coefficient of thermal expansion (CTE or α).
Invar36 is used where high dimensional stability is required, such as precision instruments, clocks, seismic creep gauges, television shadow-mask frames, valves in motors, and antimagnetic watches. In land surveying, when first-order (high-precision) elevation leveling is to be performed, the Level staff (leveling rod) used is made of Invar, instead of wood, fiberglass, or other metals. Invar struts were used in some pistons to limit their thermal expansion inside their cylinders.
Invar36 use oxyacetylene welding, electric arc welding, welding and other welding methods. Since the coefficient of expansion and chemical composition of the alloy is related should be avoided due to welding causes a change in the alloy composition, it is preferable to use Argon arc welding welding filler metals preferably contains 0.5% to 1.5% titanium, in order to reduce weld porosity and crack.
| Ni | Cr | Fe | C | Mn | Si | Co | P | S | |
| MIN | 35 | ||||||||
| MAX | 37 | 0.2 | Margin | 0.03 | 0.35 | 0.2 | 0.5 | 0.02 | 0.01 |
| Cold rolled strip | Hot rolled flat bar | Hot forging bar | Cold pulling wire | Cold pulling bar |
| 0.01-2.5 x1-400 | 2.5-20 x 5-400 | Φ12-400x1000 | Φ0.05-2.0 x L | Φ2.0-12 x L |
Invar 36 has the following features:
1. Good corrosion resistance of reducing, oxidizing and nitriding media.
2. Good stress corrosion crackingresistance at room temperature and high temperature.
3.Good resistance to dry chlorine gas and hydrogen chloride gas corrosion.
4. It has good mechanical properties at minus, room temperature and high temperature.
5. Has the very good creep rupture strength, recommended above 700 ℃ working environment.
