S690QL: chemical composition, tensile strength, equivalent

S690QL is a high-strength quenched and tempered structural steel that conforms to the EN 10025-6 standard. It offers excellent mechanical properties, making it suitable for applications in demanding industries such as construction, mining, and heavy machinery. Here are the key details about S690QL:

Chemical Composition (Percentage by weight):

Carbon (C): 0.20%

Silicon (Si): 0.80%

Manganese (Mn): 1.70%

Phosphorus (P): 0.025%

Sulfur (S): 0.010%

Chromium (Cr): 0.50%

Nickel (Ni): 0.50%

Molybdenum (Mo): 0.70%

Boron (B): 0.005%-0.006%

Mechanical Properties:

Tensile Strength: The minimum tensile strength of S690QL is 690-890 MPa, depending on the thickness of the material.

Yield Strength: The minimum yield strength of S690QL is 620-700 MPa, again depending on the thickness.

Elongation: S690QL exhibits a minimum elongation of 14% at ambient temperature.

Equivalent Grades: S690QL can be equivalent to various grades in different standards. Some commonly used equivalents are:

ASTM A514: Grade F

ISO 4950-2: Grade E690

JIS G3106: SM570

GB/T 16270: Q690D

Equivalent grades may vary depending on the specific standard being referenced, and it's important to consult relevant standards or technical data sheets for precise equivalencies.

It's worth noting that the exact mechanical properties and chemical composition of S690QL can vary slightly based on the specific manufacturing process and heat treatment applied. Therefore, it is recommended to refer to the material standards or technical data provided by the manufacturer for precise and up-to-date information on S690QL or any specific grade within the EN 10025-6 standard.