Our Flexible Nickel Capillary Tubes are a total hit for anyone working with cryogenic systems and superconductivity, and we’re pumped to have them in our lineup. Made from high-purity nickel or nickel alloys, these tubes bring flexibility and toughness to custom coil designs that push the limits.
Grade | Ni+Co | Cu | Si | Mn | C | Mg | S | P | Fe |
N4 | 99.9 | ≤0.015 | ≤0.03 | ≤0.002 | ≤0.01 | ≤0.01 | ≤0.001 | ≤0.001 | ≤0.04 |
N6 | 99.5 | 0.10 | 0.10 | 0.05 | 0.10 | 0.10 | 0.005 | 0.002 | 0.10 |
Ni201 | ≥99.9 | ≤0.25 | ≤0.35 | ≤0.35 | ≤0.02 | / | ≤0.01 | / | ≤0.40 |
Ni200 | ≥99.6 | ≤0.25 | ≤0.35 | ≤0.35 | ≤0.15 | / | ≤0.01 | / | ≤0.40 |
CHEMICAL COMPOSITION |
Alloy | Ni+Co % | Mn % | Fe % | Si % | Cu % | C % | S % |
Nickel 201 | Min 99.2 | Max 0.35 | Max 0.4 | Max 0.35 | Max 0.25 | Max 0.02 | Max 0.01 |
Nickel 200 | Min 99 | Max 0.35 | Max 0.4 | Max 0.35 | Max 0.25 | Max 0.15 | Max 0.01 |
Physical Data |
Density | Specific Heat | Electrical Resistivity | Melting Point | Thermal Conductivity | Mean Coeff Thermal Expansion |
8.89g/cm3 | 0.109(456 J/kg.℃) | 0.096×10-6ohm.m | 1435-1446℃ | 70.2 W/m-K | 13.3×10-6m/m.℃ |
What’s so cool about these tubes? They’re super flexible, letting you bend and coil them into whatever shape your cryogenic setup needs—think heat exchangers or superconducting magnets. Plus, they laugh off corrosion, even in ultra-cold environments like -195°C, which is huge for keeping things running smoothly in research labs or medical imaging gear. Their thermal conductivity is top-notch too, making sure heat moves where it needs to go.
We love how sturdy they are. These tubes hold up under crazy low temperatures and still deliver the mechanical strength you need for superconductivity equipment. Whether it’s for aerospace projects or cutting-edge science, they’re built to perform when the stakes are high.
The industry’s buzzing with excitement about cryogenic tech and superconductivity right now, especially with trends toward greener energy and advanced medical tools. Our Flexible Nickel Capillary Tubes are right in the thick of it, giving engineers the custom solutions they need to innovate. As demand for these high-tech applications keeps growing, we’re here to supply the goods.
With our Flexible Nickel Capillary Tubes, you’re getting a product that’s bendy, tough, and perfect for crafting coils in cryogenic and superconductivity setups. It’s the go-to choice for tackling the coolest challenges out there!

About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. We also provide chemical analysis reports for every FeCrAl alloy, NiCr alloy, and other products purchased.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

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FAQ:
1、What are Flexible Nickel Capillary Tubes made of?
They’re crafted from high-purity nickel or nickel alloys, designed for flexibility and durability.
2、Why are they used in cryogenic and superconductivity setups?
Their flexibility and thermal properties make them perfect for custom coils in ultra-low temperature systems.
3、Can these tubes handle extremely cold temperatures?
Yes, they perform reliably at cryogenic levels, down to -195°C or lower.
4、What kind of coils can be made with these tubes?
They’re ideal for heat exchangers, superconducting magnets, and cooling loops.
5、Are they resistant to corrosion in cryogenic environments?
Absolutely, their nickel composition resists corrosion even in harsh, cold conditions.
6、How flexible are these capillary tubes?
They can be bent and coiled into complex shapes without losing structural integrity.
7、What industries benefit from these tubes?
They’re widely used in medical imaging, research labs, and aerospace for cryogenic and superconducting tech.
8、How long do they last in cryogenic applications?
With their durability and design, they’re built to handle long-term use in extreme conditions.