What is S690QL Steel?

A high-strength, low-alloy structural steel, S690QL steel has been designed for use within heavy-duty applications like the construction of bridges, cranes, and other structures. This steel grade is often also termed ‘Tempered’ or ‘Quenched’ steel, which refers to the heat treatment process used in its development.

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With a minimum yield strength of 690 MPa, S690QL steel is a high-yield strength steel. S690QL steel is also suitable for use in a variety of heavy-duty applications thanks to its excellent formability, weldability, and toughness. This grade of steel is also known for its high resistance to abrasion and fatigue.

Advantages of S690QL

  • Good Weldability: With excellent weldability, S690QL steel is easy to fabricate and assemble.
  • High Strength: S690QL steel is suitable for use in heavy-duty applications that require high strength and durability as it has a high yield strength of 690 MPa.
  • Toughness: S690QL steel has a high resistance to impact and fatigue thanks to its good toughness, which makes it suitable for use in heavy-duty applications.
  • Corrosion Resistance: S690QL steel is suitable for use in offshore structures and other applications where exposure to harsh environments is expected as a result of its good corrosion resistance.

S690QL is the most popular grade of steel out of all the quenched and tempered graded materials that Masteel offers. Masteel stocks and supplies S690QL material in thicknesses up to 250 mm.

From stock, Masteel offers S690QL in plate and profiles. Profiles are produced in-house by Masteel’s gas and plasma cutting machines. All stock material is sourced from the most reputable European steel mills, complete with full traceability and 3.1 material certs.

This information has been sourced, reviewed and adapted from materials provided by Masteel UK Ltd.

For more information on this source, please visit Masteel UK Ltd.

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