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Invar Tube ASTM F 1684 Controlled Expansion Alloy Low Thermal Expansion Alloy

Place of Origin China
Brand Name XUNSHI
Certification ISO, SGS
Model Number Invar
Minimum Order Quantity 20kg
Price Negotiable
Packaging Details Plywood crate
Delivery Time 60 days
Payment Terms T/T
Supply Ability 100 kg per week

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Product Details
Equal Grades Invar 36, NILO 36, Pernifer 36, 4J36, EN 1.3912, UNS K93600, UNS K93603, Werkstoff 1.3912 Spec ASTM F1684
Material FeNi Alloy Forms Of Supply Sheet, Strip, Wire, Rod, Bar, Tube, Capillary
Size Rang O.D. Φ0.2~Φ8mm
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ASTM F1684 invar tube


FeNi alloy invar tube


8mm invar tube

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Product Description

Dimension: O.D.: Φ0.2~Φ8mm, wall thickness 0.015~0.5mm.
Tolerance: O.D.: Φ±0.003mm, wall thickness T±0.005mm, length L±0.05mm.


Invar is a low expansion alloy consisting of 36% Nickel, balance Iron. Invar Alloy 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 instruments like optoelectronic devices, optical and laser benches, electronics, and other kinds of scientific instruments.

Low expansion rate up to 500°F
Readily weldable

Cathode Ray Tubes
Other application areas, such as telecommunications, aeronautical and aerospace engineering, cryogenic engineering (liquefied natural gas tankers) etc., require either high dimensional stability with variation in temperature, or expansion characteristics matched with those of other materials, such as glass, ceramics, or composites.

Equal grades
Invar 36, NILO 36, Pernifer 36, 4J36, EN 1.3912, UNS K93600, UNS K93603, Werkstoff 1.3912

Chemical composition
Ni=35.0~37.0, Fe=Remainder, Mo≤0.50, C≤0.1, Cu≤0.5, Mn≤0.60, Si≤0.35, P≤0.025, S≤0.025, Cr≤0.5

ASTM F 1684-06

Forms available at XUNSHI
Sheet, strip, wire, rod, bar, tube, capillary