Q345FTE Wind Turbine Tower Steel Plate
This article introduces Q345FTE structural steel for wind turbine towers manufactured by Chinese steel mills, hoping to meet your needs and encourage you to purchase this grade of steel. Q345FTE provides 345 MPa minimum yield, excellent toughness at -40°C (Grade E), and complies with GB/T 28410-2012 for wind tower construction in extremely cold environments.
📊 Q345FTE Approximate Grade Lookup Table
Chemical Composition (GB/T 28410-2012, mass fraction / %)
| Element | Value / Range |
|---|---|
| Grade | Q345FT E |
| C ≤ | 0.20 |
| Mn | 0.90 ~ 1.65 |
| P ≤ | 0.020 |
| S ≤ | 0.010 |
| Si ≤ | 0.50 |
| Nb ≤ | 0.060 |
| V ≤ | 0.12 |
| Ti ≤ | 0.050 |
| Mo ≤ | 0.20 |
| Cr ≤ | 0.30 |
| Ni ≤ | 0.50 |
| Cu ≤ | 0.30 |
| Als ≥ | 0.015 |
| N ≤ | 0.010 |
Note: The lower limit of Mn content for normalized delivery shall be as specified in the table. No lower limit required for other conditions.
Mechanical Properties & Processing (GB/T 28410-2012)
| Property | Specification |
|---|---|
| Grade | Q345FT E |
| Yield ReL ≥ (≤16 mm) | 345 MPa |
| Yield ReL ≥ (16~40 mm) | 335 MPa |
| Yield ReL ≥ (40~100 mm) | 325 MPa |
| Tensile Rm | 470 ~ 630 MPa |
| Elongation A ≥ | 21% |
| Impact KV2 (Grade E, -40°C) ≥ | 34 J |
| Bending 180° (thickness ≤16 mm) | d = 2a |
| Bending 180° (thickness 16~100 mm) | d = 3a |
Notes:
1. When yield is not significant, Rp0.2 may be used.
2. For thickness >60 mm, elongation may be reduced by 1%.
3. Impact test uses longitudinal specimens.
4. Impact temperature by grade: B 20°C, C 0°C, D -20°C, E -40°C, F -50°C. (Grade E offers -40°C impact, 34J min)
1. When yield is not significant, Rp0.2 may be used.
2. For thickness >60 mm, elongation may be reduced by 1%.
3. Impact test uses longitudinal specimens.
4. Impact temperature by grade: B 20°C, C 0°C, D -20°C, E -40°C, F -50°C. (Grade E offers -40°C impact, 34J min)
Key Technical Specifications
- Standard: GB/T 28410-2012 (wind tower steel)
- Delivery: Normalized / TMCP / QT (fine-grain treatment for low-temp)
- Thickness: 8–100 mm (custom up to 150 mm available)
- Width: up to 5300 mm; Length: up to 12000 mm
- Impact grade: E (-40°C) standard, 34J minimum
- Certification: EN 10204 3.1/3.2 mill certificate
Applications
- Tower shell sections for wind turbines in arctic or extremely cold regions
- Flanges, ring stiffeners, connection brackets requiring -40°C impact toughness
- Internal platforms, ladder supports, door frames in low-temperature service
- Offshore wind towers and structures subjected to freezing conditions
Important: All technical data are based on GB/T 28410-2012 for Q345FTE. Final parameters should be confirmed in purchase order. Values may be adjusted for thickness. Grade E guarantees 34J minimum at -40°C.
For immediate inquiries, contact via WhatsApp. For detailed specs, visit the product page.
✅ Q345FTE (Grade E, -40°C impact, 34J) · GB/T 28410-2012 · Mill certificate included