A Complete Guide to INCONEL 800 Refractories Anchor

Refractory anchors are a critical component in any high-temperature furnace. A metal fixture holds the refractory material in place, ensuring it does not crack, break or fall during heating or cooling. Different materials ensure the anchor can withstand the high-temperature furnaces’ harsh environment without disintegrating or deforming. Inconel 800 is one such material used to make refractory anchors. This post delves into Inconel 800 refractories anchors, their properties, application, and maintenance.

What is Inconel 800?

Inconel 800 is a nickel-iron-chromium alloy that contains small amounts of copper, molybdenum, and titanium. It is known for its corrosion and oxidation resistance, making it a perfect material for high-temperature applications such as refractory anchors. Being heat resistant, it does not degrade or weaken when exposed to extreme temperatures in refractory applications. Inconel 800 is a nickel-chromium alloy with high strength and good corrosion resistance. It is often used in high-temperature applications because it maintains excellent properties even when exposed to extreme temperatures up to 1100°C (2000°F).

Inconel 800 offers better resistance against carburization, nitriding, sulfidation, and oxidation at elevated temperatures than other alloys. Its high strength and corrosion resistance combination makes it an ideal material for use in industrial valves, gas turbines, and nuclear engineering components. It also has found applications in the marine industry for propellers, propulsion shafts and bearings, and aircraft engine parts. Additionally, its cost-effectiveness compared to other superalloys has seen significant usage in the chemical processing industry.

Types of INCONEL 800 Refractory Anchors

Inconel 800 has different types of anchors suited to various refractory applications. The threaded-type Inconel 800 refractories anchors are designed for low- to medium-density insulation. The welded type is ideal for high-density insulation, while the V anchor type is suitable for wall applications. Finally, the Y anchor is suitable for fretting refractory linings. Inconel 800 refractory anchors are used for anchoring high-temperature insulation and refractory materials. These anchors come in two primary types: drive pins and clip-on studs.

Drive pins offer a low profile, and secure attachment to the structure, while clip-on studs are ideal for heating elements or expansion joints due to their improved flexibility. Both types have superior corrosion resistance and can withstand temperatures up to 1600°F (871°C). In addition, they feature a sharp point that penetrates through openings easily. This makes installation quick and easy with minimal effort compared to other anchoring methods.

Installation of Inconel 800 Refractory Anchors

Proper installation of the refractory anchors plays a crucial role in the furnace’s performance and longevity. It is vital to install the anchor with enough space between the refractory and its mounting plate to allow for expansion. This will prevent breakage or distortion of the refractory material due to thermal expansion. Care should also be taken not to damage the refractory material while installing the anchors. Installing Inconel 800 refractory anchors requires special attention to detail. The installation instructions must be followed to ensure the necessary support for the refractory lining.

  • First, ensure all surfaces for fixing with anchor screws should be clean and dust free.
  • Once this is done, it’s time to attach the anchors using a suitable drill bit and a torque wrench. Ensure the hole diameter matches the anchor size to avoid space between them.
  • Securely fasten each anchor with an appropriate screw so it does not come loose during heating or cooling cycles.
  • Finally, inspect whether all anchors have been installed accurately without gaps or misalignments before firing up your furnace.

Maintaining Refractory Anchors

Regular maintenance of refractory anchors is essential in ensuring the longevity and optimal performance of the furnace. The oven should be inspected periodically to ensure no anchor has come loose or has any signs of deformation, cracking or damage. Damaged anchors should be replaced immediately.

Benefits of INCONEL 800 Refractory Anchors

Inconel 800 has unique properties, such as high-temperature resistance, corrosion, and oxidation resistance, making it an ideal material for refractory anchors. They not only maintain the stability of the furnace lining but also reduce downtime due to repairs or replacement.


In conclusion, Inconel 800 refractory anchors are essential to industrial processes. Finding the right ones can differentiate between an efficient and safe furnace and a faulty one. It is vital to choose the right Inconel 800 refractory anchors, install them correctly and maintain them regularly. Regular maintenance of refractory anchors guarantees optimum performance and cost savings in repairs or replacements and ensures the integrity and reliability of the furnace lining. Choose Inconel 800 Refractory Anchors for your furnace’s utmost reliability, durability, and safety.