Nickel is an element found in most metal alloys, sometimes in very small amounts. In stainless steel, there is a small percentage of nickel that is added to improve resistance to both corrosion and oxidation. Along with resistance, it adds more strength and durability when combined with chromium metal at both high and lowtemperatures.
What are the different types of nickel alloy pipe?
601 Nickel Pipe: Nickel alloy 601 is used for general-purpose engineering applications that need heat as well as corrosion resistance. 601 nickel pipe has high mechanical strength and can be welded easily. With these important characteristics and its high creep rupture strength, it could be beneficial for your next project.
Nickel 600 Pipe: Nickel alloy 600 has good resistance to oxidation and cracking at higher temperatures. It has great strength characteristics and workability, and can keep its strength at lower temperatures. Nickel 600 pipe can be joined by many processes including welding and brazing.
Nickel 625 Tubing: Nickel 625 contains higher percentages of chromium – up to 20 or 30 percent, with the rest of the metal consisting of nickel. This is typically used in the manufacture of engine exhaust systems. Nickel 625 tubing also has a high creep rupture strength, and therefore is mostly seen in the aerospace and shipbuilding industry.
Nickel 400 Tubing: This nickel-copper alloy is made up of approximately 67% nickel and 23% copper. Due to its higher content of copper, nickel 400 tubing is used for gasoline or freshwater tanks, chemical equipment, oil towers, heat exchangers, marine engineering, and other valves, pumps, shafts, fittings and more. It has excellent resistance to seawater and alkaline salt.
Let’s take a look at a few reasons to use copper or nickel alloy pipe for your project.
Copper-nickel has been used for years in the shipbuilding industry. Due to its lighter material and corrosion resistance, it’s a great element for offshore piping. It’s also a more economical choice if used on a large-scale, long-term project (15+ years). Copper-nickel needs specific packaging care and welding specialists.
Copper-nickel pipe works well in the shipbuilding industry because of its seawater corrosion and biofouling properties. Some types of metal, like Alloy 706, is commonly used for shipboard fire protection. Copper-nickel alloys are also useful as condensers and heat exchanger tubes in power stations along the coast. Copper-nickel alloys have a firmly established record with marine projects.
St. Louis Pipe and Supply is one of the largest domestic and international pipe suppliers. All materials, including nickel 600 pipe, meets or exceeds ASTM, ASME, ANSI and/or API standards. Learn more about nickel alloy pipe for your next project.
If you have any questions, feel free to contact us!