S690QL1 / DILLIMAX 690 E is a high strength quenched and tempered, fine grained structural steel with a minimum yield strength of 690 MPa (100 ksi)* in its delivery condition (referring to the lowest thickness range).
Its mechanical properties are achieved by water quenching followed by tempering.

S690QL1 / DILLIMAX 690 E is preferentially used for welded steel structures within mechanical constructions, plant constructions and structural steel works, such as machines for structural engineering, conveying plants, hoists, cranes, flood gates, bridges and frameworks.