EN 10025-6 S690QL – Gangsteel Group
Gangsteel Group is a leading supplier of EN 10025-6 S690QL, a high-yield structural steel plate known for its exceptional strength, toughness, and weldability. Produced in compliance with EN 10025-6:2004, S690QL is a quenched and tempered steel grade designed for demanding applications in construction, mining, and heavy machinery. Our EN 10025-6 S690QL plates are sourced from top-tier manufacturers, ensuring high quality, competitive pricing, and adherence to international standards such as ASTM and AISI.
Why Choose Gangsteel’s EN 10025-6 S690QL?
- High Yield Strength: Minimum yield strength of 690 MPa enables leaner, lightweight structural designs with enhanced payload capacity.
- Superior Toughness: Impact tested at -40°C, ensuring performance in low-temperature environments.
- Excellent Weldability: Low carbon equivalent (CEV ~0.46%) facilitates effective welding with various techniques.
- Customizable Dimensions: Available in thicknesses from 6mm to 250mm, widths up to 4020mm, and lengths up to 18000mm.
- Competitive Pricing: Prices range from US $800-1200 per metric ton (FOB), depending on specifications and order volume.
Chemical Composition of EN 10025-6 S690QL
The chemical composition of EN 10025-6 S690QL is optimized for high strength and weldability. Below is the typical composition (maximum percentages):
| Element | C | Si | Mn | P | S | Cr | Mo | Ni | V | Nb | Ti | Cu | N | B |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max % | 0.20 | 0.80 | 1.70 | 0.025 | 0.015 | 1.50 | 0.70 | 2.00 | 0.12 | 0.06 | 0.05 | 0.50 | 0.015 | 0.005 |
Note: Includes grain-refining elements (Nb, Ti, V) to enhance microstructure and strength.
Mechanical Properties of EN 10025-6 S690QL
The mechanical properties make EN 10025-6 S690QL ideal for high-stress applications:
| Property | Value | Description |
|---|---|---|
| Yield Strength | ≥690 MPa (≤50mm) | High strength for lean structural designs |
| Tensile Strength | 770-940 MPa | Robust performance under extreme loads |
| Elongation | ≥14% | Ensures ductility for forming processes |
| Impact Toughness | ≥30 J at -40°C (longitudinal) | Excellent low-temperature toughness |
| Hardness | ~250-290 HB | Quenched and tempered for durability |
Note: Properties may vary with thickness; values shown are for thicknesses ≥3 ≤50mm.
Equivalent Material Table
S690QL is comparable to other high-strength steel grades used globally. The table below lists common equivalents:
| Standard | Equivalent Grade | Description |
|---|---|---|
| ASTM | A514 Grade B/F | High-strength, quenched, and tempered steel |
| JFE | HITEN 780LE | Japanese high-yield structural steel |
| Dillinger | DILLIMAX 690 | European high-strength steel |
| SSAB | WELDOX 700 | Swedish high-strength structural steel |
| Alform | ALFORM 700 | Austrian high-strength steel |
Note: Equivalents may vary slightly in composition and properties; consult Gangsteel for precise specifications.
Applications of EN 10025-6 S690QL
EN 10025-6 S690QL is widely used in:
- Construction: Bridges, high-rise buildings, and structural frameworks.
- Heavy Machinery: Cranes, excavators, and mining equipment.
- Offshore: Drilling platforms and wind turbine supports.
- Transportation: Heavy-duty vehicle chassis and dumper bodies.
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Frequently Asked Questions (FAQ)
What is EN 10025-6 S690QL used for?
EN 10025-6 S690QL is used in high-strength applications such as cranes, bridges, offshore platforms, and heavy machinery due to its high yield strength and toughness.
How much does EN 10025-6 S690QL cost?
Prices typically range from US $800-1200 per metric ton (FOB), depending on thickness, dimensions, and order volume. Contact Gangsteel for a customized quote.
Is EN 10025-6 S690QL weldable?
Yes, S690QL has excellent weldability due to its low carbon equivalent. Use appropriate filler materials and preheating for optimal results.
What is the difference between S690QL and S690QL1?
S690QL1 offers higher impact toughness at lower temperatures (-60°C vs. -40°C for S690QL), making it suitable for colder environments.
Where can I find a reliable EN 10025-6 S690QL supplier?
Gangsteel Group is a trusted EN 10025-6 S690QL supplier, offering high-quality plates with global delivery and competitive pricing.
Why Gangsteel?
- Extensive Inventory: Large stock of S690QL plates in various sizes (e.g