What is EN 10025-6 S690QL grade?

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 EN 10025-6 S690QL Steel

EN 10025-6 S690QL is a high-strength, low alloy structural steel designed for use in demanding applications where strength and toughness are critical. This steel is produced through a quenching and tempering process, which enhances its mechanical properties and makes it suitable for heavy-duty structures.

Chemical Composition

The chemical composition of EN 10025-6 S690QL steel is carefully controlled to ensure optimal performance. The primary elements in this steel include:

  • Carbon (C): 0.20% max
  • Manganese (Mn): 1.70% max
  • Phosphorus (P): 0.025% max
  • Sulfur (S): 0.015% max
  • Chromium (Cr): 1.50% max
  • Nickel (Ni): 2.00% max
  • Molybdenum (Mo): 0.70% max
  • Vanadium (V): 0.12% max
  • Nitrogen (N): 0.015% max
  • Boron (B): 0.005% max
  • Titanium (Ti): 0.05% max
  • Zirconium (Zr): 0.15% max

Mechanical Properties
What is EN 10025-6 S690QL propertie?

The mechanical properties of EN 10025-6 S690QL steel are impressive, making it an excellent choice for structural applications. Here’s a summary of its key mechanical properties:

Property Value
Yield Strength 690 MPa
Tensile Strength 770-940 MPa
Elongation 14% min
Impact Toughness 50 J @ 0°C, 40 J @ -20°C
Hardness 190-220 HBW

Applications

EN 10025-6 S690QL steel is widely used in various industries due to its high strength and toughness. Some common applications include:

  • Construction: Used in the construction of bridges, buildings, and other structures where high strength is required.
  • Heavy Transportation: Suitable for manufacturing heavy-duty vehicles and machinery.
  • Steel Constructions: Ideal for steel frameworks and other structural components.
  • Lifting Equipment: Used in the production of cranes, hoists, and other lifting devices.

Weldability and Fabrication

Despite its high strength, EN 10025-6 S690QL steel maintains good weldability, making it easy to work with during fabrication. It can be welded using standard welding techniques, and its low carbon content minimizes the risk of weld cracking.

Heat Treatment

The quenching and tempering process used to produce EN 10025-6 S690QL steel enhances its mechanical properties. This heat treatment involves heating the steel to a high temperature, followed by rapid cooling (quenching) and reheating to a lower temperature (tempering). This process improves the steel’s strength, toughness, and ductility.

Corrosion Resistance

While EN 10025-6 S690QL steel is primarily designed for its mechanical properties, it also offers good resistance to atmospheric corrosion. This makes it suitable for outdoor applications where exposure to the elements is a concern.

Conclusion

EN 10025-6 S690QL steel is a versatile and high performance material that is widely used in various industries. Its combination of high strength, good weldability, and excellent toughness makes it an ideal choice for demanding structural applications. By understanding its properties and applications, industries can maximize the potential of this material and ensure the longevity and reliability of their projects.

 

ENEN 10025-6 S690QL Equal grade  stock list

Grade

Size mm

Thick

Width

Length

BS700MCK2

6*1500*13000

6

1500

13000

BS700MCK2

6*1500*13000

6

1500

13000

BS700MCK2

6*1500*6100

6

1500

6100

BS700MCK2

6*1500*6100

6

1500

6100

BS700MCK2

6*1500*6100

6

1500

6100

BS700MCK2

6*1500*6100

6

1500

6100

BS700MCK2

6*1500*6100

6

1500

6100

BS700MCK2

6*1500*6100

6

1500

6100

BS700MCK2

6*1500*6100

6

1500

6100

BS700MCK2

6*1500*6100

6

1500

6100

BS700MCK2

6*1500*8500

6

1500

8500

BS700MCK2

6*1500*8500

6

1500

8500

BS700MCK2

6*1500*8500

6

1500

8500

BS700MCK2

6*1550*11000

6

1550

11000

BS700MCK2

7*1500*11000

7

1500

11000

BS700MCK2

7*1500*11000

7

1500

11000

BS700MCK2

7*1500*11000

7

1500

11000

BS700MCK2

7*1500*11000

7

1500

11000

BS700MCK2

8*1500*11000

8

1500

11000

BS700MCK2

8*1500*11000

8

1500

11000

BS700MCK2

8*1500*11000

8

1500

11000

BS700MCK2

8*1500*13000

8

1500

13000

BS700MCK2

8*1550*6100

8

1550

6100

BS700MCK2

8*1550*6100

8

1550

6100

BS700MCK2

8*1550*6100

8

1550

6100

BS700MCK2

8*1800*13000

8

1800

13000

BS700MCK2

8*1800*13000

8

1800

13000

BS900D

3*1400*9000

3

1400

9000

BS900D

3*1400*9000

3

1400

9000

BS900D

4*1500*13000

4

1500

13000

BS900D

5*1500*12000

5

1500

12000

BS900D

6*1650*12300

6

1650

12300

BS900D

6*1650*12300

6

1650

12300

BS900D

6*1650*2500

6

1650

2500

BS900D

7*1500*12000

7

1500

12000

BS900D

7*1500*12000

7

1500

12000

BS900D

8*1500*12000

8

1500

12000

BS900D

8*1800*13000

8

1800

13000

BS960E

12*1500*12000

12

1500

12000

BS960E

12*1500*12000

12

1500

12000

BS960E

3*1400*9000

3

1400

9000

BS960E

4*1500*13000

4

1500

13000

BS960E

4*1500*13000

4

1500

13000

BS960E

5*1500*12000

5

1500

12000

BS960E

5*1500*12000

5

1500

12000

 

EN 10025-6 S690QL properties
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