Q345FTC Wind Turbine Tower Steel Plate
This article introduces Q345FTC 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. Q345FTC provides 345 MPa minimum yield, excellent toughness at 0°C (Grade C), and complies with GB/T 28410-2012 for wind tower construction.
📊 Q345FTC Approximate Grade Lookup Table
Chemical Composition (GB/T 28410-2012, mass fraction / %)
| Element | Value / Range |
|---|---|
| Grade | Q345FT C |
| C ≤ | 0.20 |
| Mn | 0.90 ~ 1.65 |
| P ≤ | 0.025 |
| S ≤ | 0.015 |
| 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 ≤ | 0.012 |
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 C |
| 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 (0°C, Grade C) ≥ | 47 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.
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.
Key Technical Specifications
- Standard: GB/T 28410-2012 (wind tower steel)
- Delivery: Normalized / TMCP / QT
- Thickness: 8–100 mm (custom up to 150 mm available)
- Width: up to 5300 mm; Length: up to 12000 mm
- Impact grade: C (0°C) standard, others optional
- Certification: EN 10204 3.1/3.2 mill certificate
Applications
- Tower shell sections (cylindrical/conical) for onshore/offshore wind turbines
- Flanges, ring stiffeners, connection brackets
- Internal platforms, ladder supports, door frames
- Transition pieces and bottom sections
Important: All technical data are based on GB/T 28410-2012 for Q345FTC. Final parameters should be confirmed in purchase order. Values may be adjusted for thickness and impact temperature.
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