Stainless steel and high nickel alloy tubing are used in numerous industries, from Aerospace to Chemical Processing. Their durability, corrosion resistance, and versatility make them essential in a wide range of applications, ensuring the reliability and longevity of critical components manufactured by leading tubing manufacturers.

This article serves as a quick guide to understanding the diverse range of applications, unique properties, and exceptional characteristics of stainless steel tubing and nickel alloy tubing, with a focus on grades such as Nickel 200-201, 400, 600, 625, 800-800H, 825, 690, and 617.

Understanding Stainless Steel and High Nickel Alloy Tubing

Stainless steel tubing, known for its corrosion resistance and strength, is a cornerstone material for an array of purposes. Its composition primarily consists of iron, chromium, and often nickel, which collectively provide its remarkable properties. Industry leaders worldwide rely on stainless steel tubing for its reliability and performance in demanding environments.

The Versatility

Stainless steel tubing finds applications across diverse industries, including Aerospace, Marine, Hydrocarbon Processing, and more. Its ability to withstand harsh environments, coupled with its formability and weldability, makes it indispensable in countless engineering projects. Leading tubing manufacturers prioritize stainless steel tubing for its versatility and longevity, ensuring the success of critical applications.

Nickel Alloy Tubing

Nickel alloy tubing, characterized by its exceptional corrosion resistance and thermal stability, plays a role in applications where conventional materials fall short. Nickel alloy tubing thrives in extreme environments, ensuring the longevity and reliability of critical components.

Grades of Nickel Alloy Tubing

The featured grades of nickel alloy tubing offer a spectrum of properties tailored to specific applications. Each grade possesses unique characteristics that cater to distinct environmental and performance requirements.

Exploring Individual Grades

Nickel 200-201

Nickel 200 is a commercially pure wrought nickel (99.6%). Nickel 201 is also a commercially pure wrought nickel, but has a lower maximum carbon content of 0.02%. They are great for corrosive resistance in neutral to moderately reducing environments. They are used in a variety of applications, with a focus on chemical processing, electronics, and food processing industries. In addition to good mechanical properties, they have good magnetic properties, high thermal and electrical conductivities, and can also be hot formed to any shape and formed cold by all methods.

Nickel 400 (or MONEL® 400)

Nickel 400, knows as MONEL® 400, is a nickel-copper alloy composed of 63-70% nickel and 28-34% copper, in addition to small amounts of other elements. It is valued for its high strength, ductility, corrosion resistance, thermal conductivity, and ease of fabrication. It as a trusted choice for applications in marine environments, valves, pumps, heat exchangers, chemical processing equipment, and process vessels.

Nickel 600 (or INCONEL® 600)

Nickel 600, known as INCONEL® 600, is a nickel-chromium alloy (composed of 72% minimum Ni and 14-17% Cr) with good oxidation resistance at higher temperatures, ranging from cryogenic to 2000°F. It has great workability, weldability and high strength. The high nickel content makes it resistant to many organic and inorganic compounds and offers good corrosion resistance in reducing conditions. Its suitability extends to applications such as heat exchangers and instrumentation/control applications, where its exceptional versatility finds value.

Nickel 625 (or INCOLOY® 625)

Nickel 625, also known as INCOLOY® 625, is a nickel-chromium alloy (composed of 58% minimum Ni and 20-23% Cr) known for its high strength at elevated temperatures, excellent fabricability and superb corrosion resistance. The strength of alloy 625 is derived from the stiffening effect of molybdenum and niobium on its nickel chromium matrix. Alloy 625 has good resistance to oxidation and scaling at high temperatures, ranging from cryogenic to 1800°F. It is widely used in seawater applications such as offshore oil equipment and undersea cable sheathing. In Aerospace, it is valued for its high tensile strength, creep resistance, and weldability, making it suitable for engine exhaust systems, fuel and hydraulic line tubing, and also heat exchangers. It is also extensively used in the chemical processing industry.

Nickel 800-800H (or INCOLOY® 800-800H)

Nickel 800/800H, known as INCOLOY® 800-800H, are nickel-iron-chromium alloys (composed of 30-35% Ni, 19-23% Cr, and max 39.5% Fe) with good strength and excellent resistance to oxidation, carburization and sulfidation in high temperature exposure. Alloy 800 is primarily used in applications with temperatures up to 1100° F, where alloy 800H is normally used in temperatures above 1100° F where resistance to creep and rupture is required. They mainly find a home in application like chemical and petrochemical processing equipment, power generation, and thermal processing equipment.

Nickel 825 (or INCOLOY® 825)

Nickel 825, also known as INCOLOY® 825, is an nickel-iron-chromium alloy (composed of 38-46% Ni, 19.5-23.5% Cr, and minimum 22.0% Fe) with additions of molybdenum, copper and titanium. This alloy provides high levels of corrosion resistance to both moderately oxidizing and moderately reducing environments. Alloy 825 is especially resistant to sulfuric and phosphoric acids, as well as chloride stress corrosion cracking and pitting. It is a reliable choice for applications like condensers, oil and gas well equipment, hydraulic systems, chemical processing equipment, nuclear fuel processing, and more.

Nickel 690 (or INCONEL® 690)

Nickel 690, known as INCONEL® 690, is a high chromium-nickel alloy (composed of 58% minimum Ni and 27-31% Cr) that has the ability to withstand extreme temperatures and stress corrosion cracking. It also has outstanding resistance to oxidizing chemicals and to high-temperature oxidizing gases, high strength, good metallurgical stability, and favorable fabrication characteristics. It is a preferred material for steam generators, nuclear power plants, and Aerospace components.

Nickel 617 (or INCONEL® 617)

Nickel 617, known as INCONEL® 617, is nickel-chromium-cobalt-molybdenum alloy (composed of 44.5% minimum Ni, 20-24% Cr, 10-15% Co, and 8-10% Mo) is resistance to oxidation at high temperatures, has high-temperature strength, metallurgical stability, is easy to fabricate, and is ready to be joined through most conventional welding techniques. It is a preferred choice for power generating plants, gas turbines, ducting and liners, combustion cans, heat-treating equipment and more.

Expertise in Nickel Alloy Tubing from a Leading Tubing Manufacturer

Stainless steel tubing and nickel alloy tubing play indispensable roles in key industries. Understanding the unique properties and applications of these materials is essential for engineers and designers to leverage their full potential in advancing and solving complex challenges. Contact a leading tubing manufacturer like Ever Nickel Alloy, to choose the right, quality tubing for your applications.