GB/T Q690NH Corten SteelCertified
Want to know more about our products? Please contact us by email or phone.
Gnee Steel (Tianjin) Co., Ltd. is one of the most professional gb/t q690nh corten steelcertified manufacturers and suppliers in China. Welcome to wholesale customized gb/t q690nh corten steelcertified at competitive price from our factory. Good service and quality products are available.
GB/T Q690NH Corten Steel
GB/T Q690NH Corten Steel is engineered for critical structural applications where both maximum load capacity and long-term durability are required.
Technical Data Sheet:
| Property | Specification |
|---|---|
| Standard | GB/T 4171-2020 |
| Yield Strength | ≥690 MPa |
| Tensile Strength | 770-940 MPa |
| Elongation | ≥14% |
| Impact Toughness | ≥34J @ -40°C |
| Corrosion Index | 4.5× carbon steel (ISO 9223) |
| Weldability | Good (requires controlled procedure) |
| Surface Evolution | Forms protective oxide layer in 6-24 months |
Typical Engineering Applications:
Critical bridge components (main cables, tension members)
Offshore platform structures
Heavy mining equipment frames
Specialized crane booms and supports
High-stress transmission towers
Military and defense infrastructure
Key Selection Reasons:
Unmatched Strength - Enables lighter structures with higher load ratings
Cost-Effective Durability - Eliminates lifetime coating maintenance (saves ~70% over conventional steel)
Reliable Performance - Proven service life exceeding 40 years in field applications
Technical Maturity - Backed by extensive GB/T standard testing
Weight Savings - 15-20% material reduction compared to Q550NH for equivalent strength
Practical Implementation Notes:
• Requires controlled welding parameters (preheat 150-200°C)
• Best suited for experienced fabricators
• Initial surface runoff should be managed in design
• Not recommended for continuous immersion service
• Proper detailing prevents moisture accumulation
Client Visit
Hot Tags: gb/t q690nh corten steelcertified, China gb/t q690nh corten steelcertified manufacturers, factory, GB Corten Steel Plate, Q415NH Corten Steel Plate, Q355NH Corten Steel Plate, Q550NH Corten Steel Plate, Q500NH Corten Steel Plate, Q450NQR1 Corten Steel Plate
You Might Also Like
Send Inquiry