High Strength Steel Bolts EN 10025-6 S690Q – Gangsteel Group
Gangsteel Group is a leading supplier of High Strength Steel Bolts EN 10025-6 S690Q, offering premium-quality, quenched, and tempered structural steel bolts compliant with EN 10025-6:2004. These S690Q bolts are designed for exceptional yield strength, toughness, and reliability, making them ideal for high-stress applications in construction, heavy machinery, and infrastructure projects. As a trusted S690Q bolt supplier, Gangsteel ensures superior performance, precise manufacturing, and competitive pricing for global markets.
Why Choose Gangsteel’s High Strength Steel Bolts EN 10025-6 S690Q?
- High Yield Strength: Minimum yield strength of 690 MPa (for thicknesses ≤50mm), enabling robust fastening in demanding structural applications.
- Superior Toughness: Impact tested at -20°C with a minimum energy of 30J, ensuring reliability in low-temperature environments.
- Excellent Weldability: Low carbon equivalent (CEV ~0.45%) facilitates efficient welding with minimal preheating, enhancing fabrication flexibility.
- Customizable Specifications: Available in various diameters (M12 to M100), lengths, and thread configurations, tailored to project requirements.
- Competitive Pricing: Prices range from US $800-1200 per metric ton (FOB), depending on size, quantity, and customization.
Chemical Composition of High Strength Steel Bolts EN 10025-6 S690Q
The chemical composition of S690Q bolts is optimized for high strength and weldability, as per EN 10025-6:2004 (maximum percentages):
| Element | C | Si | Mn | P | S | Cr | Mo | Ni | V | Nb | Ti | Cu | N | B | Zr |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 0.15 |
Note: Alloying elements like Nb, Ti, and V enhance grain refinement, improving strength and toughness.
Mechanical Properties of High Strength Steel Bolts EN 10025-6 S690Q
The mechanical properties of S690Q bolts ensure suitability for high-stress fastening applications:
| Property | Value | Description |
|---|---|---|
| Yield Strength | ≥690 MPa (8-50mm) | Supports high-load fastening applications |
| Tensile Strength | 770-940 MPa | Ensures durability under extreme stresses |
| Elongation | ≥14% | Provides ductility for secure fastening |
| Impact Toughness | ≥30 J at -20°C (longitudinal) | Reliable performance in cold conditions |
| Hardness | ~250-300 HB | Quenched and tempered for enhanced durability |
Note: Properties are for thicknesses up to 50mm; consult Gangsteel for larger diameters.
Equivalent Material Table
High Strength Steel Bolts EN 10025-6 S690Q are comparable to other high-strength structural steels:
| Standard | Equivalent Grade | Description |
|---|---|---|
| ASTM | A514 Grade B/F | High-strength, quenched, and tempered steel |
| JFE | HITEN 780 | 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; contact Gangsteel for precise specifications.
Applications of High Strength Steel Bolts EN 10025-6 S690Q
S690Q bolts are ideal for:
- Construction: Fastening critical joints in bridges, high-rise buildings, and stadiums.
- Heavy Machinery: Securing components in mining equipment, cranes, and excavators.
- Infrastructure: Bolting structural elements in tunnels, offshore platforms, and wind turbine towers.
- Energy Sector: Fastening components in hydropower plants and pressure vessels.
Frequently Asked Questions (FAQ)
What are High Strength Steel Bolts EN 10025-6 S690Q used for?
S690Q bolts are used in high-stress applications such as construction, heavy machinery, infrastructure, and energy sectors, providing secure fastening for critical structural joints.
How much do High Strength Steel Bolts EN 10025-6 S690Q cost?
Prices typically range from US $800-1200 per metric ton (FOB), depending on diameter, length, and order volume. Contact Gangsteel for a customized quote.
Are High Strength Steel Bolts EN 10025-6 S690Q weldable?
Yes, S690Q bolts offer good weldability due to their low carbon equivalent, requiring a preheating temperature of ~150°C, as per EN 1011-2 guidelines.
How do S690Q, S690QL, and S690QL1 bolts compare?
S690Q offers standard toughness (-20°C), S690QL provides high toughness (-40°C), and S690QL1 offers extra toughness (-60°C), suitable for progressively colder environments.
Where can I find a reliable High Strength Steel Bolts EN 10025-6 S690Q supplier?
Gangsteel Group is a trusted S690Q bolt supplier, offering high-quality bolts with global delivery and competitive pricing.
Why Gangsteel?
- Extensive Inventory: Wide range of S690Q bolts in diameters from M12 to M100, with customizable lengths and thread types.
- Quality Assurance: Supplied with EN 10204 3.1/3.2 MTC certificates and tested per international standards (DNV, BV, LR, ABS, SGS).
- Global Delivery: Serving markets in Saudi Arabia, UAE, India, Europe, and more.
- Custom Fabrication: Precision machining, cutting, and coating (e.g., zinc, hot-dip galvanized) to meet project specifications.
Contact Gangsteel
For inquiries about High Strength Steel Bolts EN 10025-6 S690Q pricing or to request a quote, visit Gangsteel Group or contact our sales team. Trust Gangsteel for premium S690Q bolts tailored to your project needs!