High Performance Nickel Alloy Tubing
High Performance nickel tubing alloys are not surprisingly characterized by higher nickel content which generally gives them higher melting points, better performance at temperature extremes and improved resistance to oxidation and corrosion. These features are generally augmented by good ductility, another benefit of high nickel content. Nickel is an excellent alloying element, and because it bonds with other elements in solution, these alloys are quite stable. One of the drawbacks to high nickel alloy tubing is that nickel is a relatively expensive input, and these alloys are not as in high demand as more commonly used stainless steel alloys. Thus, these alloys tend to be more expensive as a result.
High Nickel Alloys
- Nickel Alloy 600 Small Diameter Tubing (UNS 06600, WNR 2.4816), also known by trade name Inconel® 600, is a nickel chromium alloy intended for use at temperatures approaching 2000ºF and is used where corrosion resistance is an important performance requirement. Performing well in both reducing and oxidizing environments, alloy 600 tubing can be readily hardened by cold working. Applications include chemical /petrochemical processing, aerospace and power generation.
- Nickel Alloy 625 Small Diameter Tubing (UNS 06625 WNR 2.4856) is similar to alloy 600 however it has more than 8% molybdenum content, giving it even greater strength and corrosion resistance at high temperatures. Also known as Inconel® 626, it is highly resistant to pitting and crevice corrosion. Frequently, customers use this alloy where exposures to corrosive environments, high temperatures and high mechanical stresses are common. Similar to alloy 600 tubing, alloy 625 tubing applications include chemical /petrochemical processing, aerospace and power generation.
- Monel Alloy 400 (UNS 04400, WNR 2.436) small diameter tubing (also known by trade name Monel® 400) is a nickel alloy copper tubing alloy with high strength and excellent corrosion resistance across a wide temperature range. Unlike many alloys, it retains its strength at subzero/cryogenic temperatures. Monel 400 offers similar performance to pure nickel tubing alloys (like 200) but at a lower cost because of the blended copper content. It’s commonly used in marine, chemical processing and heat exchanging equipment.
- Alloy 200 (UNS N02200, WNR 2.4060) is a commercially pure nickel tubing alloy. Highly ductile, it offers good corrosion resistance in reducing environments. Applications include, food, marine and chemical processing.
- Alloy X-750 (UNS N07750, WNR 2.4669) tubing (trade name Inconel® X-750) is known for high strength and corrosion/oxidation resistance approaching 1300ºF. It is a precipitation hardening alloy with nickel content of 70% minimum and is used in industrial, gas turbine and aerospace applications.
Vita Needle manufactures high nickel tubing products from 5/16” OD and smaller, and quantities 10 to 100,000’ or more. Tubing is sold in coil, straight lengths, or fabricated parts. All of the alloys above are readily fabricated with all of Vita Needle’s reductive/conventional machining capabilities including electrochemical and EDM. They can be cold worked to high tensile strengths over 150 KSI, depending on the OD and tube wall. The high nickel alloys are also offered by Vita Needle in annealed temper for applications requiring softer tubing, or intermediate tempers. Because we can weld, draw and fabricate in house, our lead times and pricing routinely beat competitor offerings. Please send us your inquiry or questions. We look forward to reviewing and responding promptly to your request!