Alloy 600 is a Ni-Cr-Fe Alloy
Alloy 600 is characterized by:
- Good resistance to oxidation, carburization and nitriding
- Good resistance to stress corrosion cracking, at both room and elevated temperatures
- Good resistance to dry chlorine and hydrogen chloride
- Good mechanical properties at sub-zero, room and elevated temperatures
What is Nickel Alloy 600
Nickel is a material used in thousands of products in all industries and applications, from consumer goods to aerospace. One of the biggest uses for Nickel is in Alloys, where it is used to create strong materials that resist heat and corrosion.
Nickel-chromium Alloys are generally highly heat- and corrosion-resistant, maintaining integrity at high temperatures without oxidization or losing strength. While these Alloys are not ideal for sulfur rich environments, they work well in many other applications.
Alloys with superb corrosion and temperature resistance are often known as superalloys, and are frequently used in energy, power, chemical, and petrochemical applications.
The Properties of Nickel Alloy 600
Nickel Alloy 600, also known as Alloy 600 Inconel, is a Nickel-chromium Alloy with properties that make it beneficial across many applications and industries.
This Alloy is high in Nickel content, with a minimum of 72 percent. This means that it is highly resistant to organic and inorganic compounds and has a lower predisposition for stress corrosion cracking when it is annealed.
The chromium part of Alloy 600 ensures that it remains temperature resistant to sulfur compounds, and resistant to oxidizing compounds at higher temperatures or within corrosive materials.
One of the more unique properties of Nickel Alloy 600 is its resistance to alkalies, and its suitability for use in strong solutions of magnesium chloride even at high temperatures.
Adding chromium to the Alloy gives it more oxidization resistant than pure Nickel, while the Nickel works to resist reducing conditions and alkaline solutions.
The Applications of Alloy 600 Inconel
Nickel Alloy 600 can be used in temperatures ranging from cryogenic to 2000F, so it is quite useful in many applications.
Industries in which Alloy 600 is popular include chemical, pulp and paper, nuclear engineering, heat treating, and aerospace, as well as in food processing, soap manufacturing, and gas turbine components.
Alloy 600 Inconel is very popular in the chemical industry, where it is used in heaters, stills, bubble towers and condensers for processing fatty acids, in evaporator tubes, tube sheets and flaking trays for sodium sulfide manufacturing, and in handling abietic acid during paper and pulp manufacturing. In its plate form it is used in industrial chemical evaporators and vacuum furnace fixtures, as well as chemical and food processing equipment. This material is common in vinyl chloride monomer production, catalyst regenerators in petrochemical production, and industrial acid and alkali equipment.
It is also widely used in nuclear engineering, particularly in the construction of nuclear reactors. For this type of application, the alloy is produced to exact specifications, designated as Inconel Alloy 600T.
In the heat-treating industry Nickel Alloy 600 is used for retorts, mufflers, furnace components, and for heat treating baskets and trays.
In the aeronautical industry this alloy is used for various components including lock-wire, exhaust liners, and turbine seals. It is commonly used in afterburner parts and other components that face high temperatures.
In electronics, Alloy Inconel 600 forms cathode ray tube spiders, thyratron grids, tube support members, and springs.
Nickel Alloy 600 is used in chlorination equipment up to 1000F. You will find it in barge and tank truck liners, ethylene dichloride crackers, phenol condensers, and in gasoline stabilizer production. Clearly, Alloy 600 Inconel is widely used, for good reason.
Working with Alloy 600 Inconel
This material comes in many forms to be used in different situations. Alloy 600 is generally available in common formats including sheets, strips, rods, forging stock, plates, round and flat bars, pipes and tubes, fittings, and wire.
This alloy is machinable but should be machined in the annealed condition for best results. Alloy 600 is easily welded, brazed, and soldered, with typical shop fabrication processes.
It can only be hardened and strengthened with cold work, but it is suitable for thermal treatments. With the right format selection and material treatment, Nickel Alloy 600 has a place in nearly any industry.
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