Invar 36 Alloy Pipe (ASTM F1684,FeNi36)
Lork Group stocks and supplies a wide range of Invar 36 materials, including Invar 36 Bar, Rod, Tube, Cold-Rolled Sheet, Hot-Rolled Plate, and Welding Wire.
Invar 36 is a Nickel-Iron, low-expansion alloy containing 36% Nickel. Its coefficient of expansion from cryogenic temperatures to about +500°F (260°C) is low, and it retains good strength and toughness at cryogenic temperatures.
Invar 36 material's common applications include tooling for aerospace composites, standards of length, measuring devices, thermostat rods, laser components, and tanks and piping for storing and transporting liquefied gases.
Please feel free to contact us if you would like to learn more about Invar 36.
Email: susan@lorkgroup.com
WhatsApp: +86 199 3707 5488

Specifications
- UNS K93600, K93601
- Werkstoff Nr. 1.3912
- ASTM B 388, ASTM B 753, DIN 1715 (Sheet and Strip)
- ASTM F-1684
- MIL-S-16598 and MIL-I-23011 CL 7
- Trademarks - NILO 36 and INVAR 36
- FeNi36
Chemical Composition
|
Weight % |
Ni |
Fe |
C |
Mn |
P |
S |
Si |
Cr |
Mo |
Co |
|
Invar 36 |
35-38 |
Rem |
0.10 max |
0.06 max |
0.025 max |
0.025 max |
0.35 max |
0.50 max |
0.50 max |
1.0 max |
Mechanical Properties
|
Material |
Condition |
Ultimate Tensile Strength |
Yield Strength 0.2 % |
Elongation (%) |
||
|
psi |
MPa |
psi |
MPa |
|||
|
Invar 36 |
Annealed |
71,000 |
490 |
35,000 |
240 |
42 |
Invar 36 Tube is available in the following size ranges.
Outside Diameter - 0.25mm (0.010") up to 16.00mm (0.625")
Wall - 0.05mm (0.002") up to 1.00mm (0.040")
Straight Lengths - 1.00mm (0.040") up to 5000.00mm (197")
Coil Lengths - 5 Metres to 15 Metres
Standard Tolerance- OD &ID +/-0.03mm (0.0012")
Wall +/- 10%
Tight Tolerance - OD&ID +/- 0.015mm (0.0006")
Wall +/-3%
Some thin-wall tubes up to 25.40 mm (1.000") can be supplied.
Applications
- Aircraft controls
- Optical & laser systems
- Radio & electronic devices
- Composite forming tools & dies
- Cryogenic components
Packaging

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