ThePipingMart Blog Grades Tribaloy T400 – Composition, Properties and Uses

Tribaloy T400 – Composition, Properties and Uses

Tribaloy T400

Have you ever heard of an alloy that is corrosion-resistant, hard, and heat-treatable simultaneously? If not, then let me introduce you to Tribaloy T400. This special alloy is popular among manufacturers across many industries because of its impressive properties and versatility. In this blog post, we will dig deeper into what Tribaloy T400 is, its composition, and physical and mechanical properties, and explore its various uses.

Tribaloy T400 Composition

Tribaloy T400 is a cobalt-chromium-tungsten (CoCrW) alloy that was first manufactured in the mid-twentieth century. It was developed to provide superior wear resistance, corrosion resistance, and toughness compared to other hard-facing alloys. The alloy’s precise composition varies depending on the manufacturer, but it generally contains 33% cobalt, 29% chromium, 17% tungsten, and small amounts of nickel, carbon, and iron. These elements work together to give the alloy its exceptional properties.

Tribaloy T400 Physical Properties

The physical properties of Tribaloy T400 include a high melting point (1,315°C or 2,399°F), excellent thermal conductivity, and low thermal expansion. It has a density of 8.6 grams per cubic centimetre (g/cm³) which is relatively high for alloy. On the other hand, it has a low coefficient of friction, making it an excellent choice for applications where low friction is essential.

Tribaloy T400 Mechanical Properties

Tribaloy T400 offers excellent mechanical properties. It has an impressive hardness ranging between 44-54 Rockwell C (HRC). This puts it on the same level as many tool steels. It also demonstrates high tensile strength, resistance to bending, and excellent abrasion resistance. In addition, the alloy has a unique strain-hardening characteristic, making it even tougher when subjected to pressure.

Tribaloy T400 Uses

Tribaloy T400 has a wide range of industrial applications thanks to its unique properties. It is ideal for use in aggressive chemical and corrosive environments, such as oil and gas industries, Chemical processing, desalination plants, and marine environments. The alloy is also popular in manufacturing and material for high-wear components, such as valves, bearings, and pump parts.

Tribaloy T400 Heat Treatment

Heat treatment is necessary for Tribaloy T400 to achieve its maximum properties. Generally, the alloy is heated to 1,130-1,160°C (2,066-2,120°F), followed by quenching and tempering. This hardens the alloy, leading to high wear resistance and corrosion resistance. Welding of the alloy is possible, but it is tricky since the alloy’s properties change, or there is a risk of cracking. Following strict welding parameters and avoiding overheating is necessary to achieve successful welding.

Tribaloy T400 Corrosion Resistance

Tribaloy T400 is widely known for its excellent corrosion resistance, allowing it to resist aggressive chemical environments. The alloy demonstrates resistance to hydrogen sulfide stress cracking and seawater environments. When it comes to corrosive applications, Tribaloy T400 has got you covered.


Tribaloy T400 is an extraordinarily versatile alloy with impressive properties. It has a wide range of industrial applications, offering resistance to wear and corrosion at high temperatures. Whether in the oil and gas or chemical processing industries or looking for an ideal material for high-wear components, Tribaloy T400 is an excellent choice. Additionally, this alloy can be heat-treated and welded, making it even more versatile for various engineering applications. With Tribaloy T400, you can have the best of both worlds in one fantastic alloy.

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