ThePipingMart Blog Grades Strenx 660 – Composition, Properties and Uses

Strenx 660 – Composition, Properties and Uses

Strenx 660

Strenx 660 is a high-strength structural steel designed to provide superior performance in challenging environments. It has exceptional toughness, weldability, and corrosion resistance properties. In this blog post, we will delve into the nitty-gritty of this steel type. You will learn what Strenx 660 comprises, its mechanical and physical properties, its different applications in various industries, how to maintain its corrosion resistance, and the heat treatment and machining processes. Read on to become an expert on this premium structural steel.

What is Strenx 660?

Strenx 660 is a high-strength, low-alloy steel designed for increased wear and impact resistance. It is weldable and formable, allowing greater freedom of design. It offers strength up to 3 times higher than normal structural steels and excellent durability in demanding applications.

Strenx 660 Composition

Strenx 660 is a multipurpose steel with a chemical composition of iron, carbon, chromium, nickel, boron, and other alloying elements. The chemical composition enhances the mechanical properties of the steel, making it ideal for use in the construction and transportation industries.

Strenx 660 Mechanical Properties

Strenx 660 boasts high strength and ductility, making it an excellent choice for structures and components that require superior toughness. It has a minimum yield strength of 660 MPa and a maximum tensile strength of 780-930 MPa, exceeding the traditional steel grades used in structural applications.

Strenx 660 Physical Properties

In addition to its superior mechanical properties, Strenx 660 has excellent physical properties. It has an elongation percentage of 16%, a density of 7.8 g/cm3, and a thermal conductivity of 40 W/mK. These physical properties make Strenx 660 a popular choice for manufacturing components that require high abrasion resistance and toughness.

Strenx 660 Uses

Strenx 660 is a versatile steel with broad applications in different industries. It is commonly used in fabricating structures such as cranes, bridges, and trailers, as well as in mining equipment, agricultural machinery, and military vehicles. The steel’s high strength and ductility also make it an excellent choice for marine and offshore structures that require excellent fatigue resistance.

Strenx 660 Corrosion Resistance

One unique property of Strenx 660 is its excellent corrosion resistance properties. The steel has a thin, protective oxide layer on its surface, shielding it from exposure to the elements, including moisture and chemicals. However, to maintain its corrosion resistance properties, storing and handling the steel correctly is imperative to prevent contamination by chromium-depleting substances.

Strenx 660 Heat Treatment

Like other types of steel, Strenx 660 also undergoes heat treatment processes to enhance its mechanical properties. Tempering is the primary heat treatment technique, which involves heating and cooling the steel at different rates. This process helps to relieve any stress within the steel and improve its toughness and tensile strength.

Strenx 660 Machining

While Strenx 660 is a premium structural steel, it is relatively easy to machine, given its composition and physical properties. However, it is essential to have the right tools and equipment to achieve the best results when machining Strenx 660. The surface treatment and lubrication of the steel are critical in this process to ensure its longevity and performance.

Strenx 660 Welding

The Strenx 660 Welding is one of the highest-strength steerable welding processes available. It offers exceptional weldability and good formability, allowing for precise fabrication. This process features outstanding results even under tough conditions such as higher temperatures and high-stress levels, providing superior mechanical properties for various heavy-duty applications.


In conclusion, Strenx 660 is a premium structural steel designed to provide superior strength, ductility, and toughness in demanding environments. Its unique properties, including high corrosion resistance, make it suitable for use in different industries, particularly in structural and transportation applications. Proper storage, handling, and maintenance are critical to maintaining Strenx 660’s mechanical and physical properties, making it a reliable choice when designing and manufacturing essential components. With this ultimate guide, you can confidently choose Strenx 660 for your application’s specific needs.

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