k490 steel

K490 Steel: A High-Strength Structural Steel for Heavy-Duty Applications

Steel is a versatile material that finds its use in various industries, including construction, automotive, and aerospace. The demand for high-strength steel is increasing, especially in heavy-duty applications, where the failure of components can lead to catastrophic consequences. K490 steel is one such high-strength structural steel that offers several advantages over traditional steel grades. In this article, we will discuss what K490 steel is, its properties, and its applications.

What is K490 Steel?

K490 steel is a low-alloy, high-strength steel that is primarily used in structural applications. It belongs to the 4XXX series of steels that contain molybdenum as the primary alloying element. K490 steel is known for its superior toughness, weldability, and corrosion resistance properties. It is suitable for use in diverse industries, including aerospace, marine, and automotive.

Properties of K490 Steel

K490 steel exhibits several properties that make it ideal for high-stress applications. Some of these properties include:

1. High Tensile Strength: K490 steel has a high tensile strength of up to 49,000 psi, which enables it to withstand heavy loads and stresses.

2. Good Weldability: K490 steel can be easily welded without any preheating or post-weld heat treatment, making it ideal for fabrication and repair work.

3. Corrosion Resistance: K490 steel has good corrosion resistance properties, which make it suitable for use in harsh environments.

4. Superior Toughness: K490 steel has excellent toughness, making it ideal for applications where impact resistance is crucial.

Applications of K490 Steel

K490 steel finds its use in several applications where high-strength, corrosion-resistant, and tough material is required. Some of these applications include:

1. Marine Industry: K490 steel is ideal for use in marine applications due to its high corrosion resistance properties. It is used in shipbuilding, offshore oil rigs, and other marine-related structures.

2. Aerospace Industry: K490 steel is used in the aerospace industry for manufacturing landing gear, wing spars, and other structural components.

3. Automotive Industry: K490 steel is used in the automotive industry for structural components like axles, suspension systems, and frames.

4. Construction Industry: K490 steel is used in the construction industry for the manufacturing of heavy-duty equipment and structures like bridges, tunnels, and buildings.


K490 steel is an excellent high-strength structural steel that offers several advantages over traditional steel grades. Its properties like high tensile strength, superior toughness, and corrosion resistance make it suitable for use in several industries, including marine, aerospace, automotive, and construction. With the increasing demand for high-strength steel in heavy-duty applications, K490 steel is definitely the material to look out for.

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