Q460FTC Wind Power Steel

Ultra-High-Strength Grade – 460MPa Yield, Guaranteed 0°C Impact Toughness (47J) for Ultra-Large Wind Turbine Towers

📏 Standard: GB/T 28410-2012
🏗️ Ultra-Large Wind Turbine Towers
💪 Yield ≥460MPa

Product Overview

This article introduces Q460FTC 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. Q460FTC is a high-strength low-alloy steel plate offering 460 MPa minimum yield, excellent toughness at 0°C (Grade C, 47J), and complies with GB/T 28410-2012 for wind tower construction requiring superior load capacity and reliable performance.

Q460FTC is an ultra-high-strength low-alloy structural steel plate specifically designed for ultra-large wind power generation equipment requiring maximum load-bearing capacity, complying with GB/T 28410-2012.

Key Advantages

  • Ultra-High Strength: Minimum yield strength of 460MPa enables significant weight reduction for ultra-large turbines (10MW+).
  • Guaranteed Toughness: Impact toughness guaranteed at 0°C (47J) for reliable performance in standard climates.
  • Excellent Weldability: Optimized chemical composition with low carbon equivalent ensures ease of fabrication.
  • Cost-Effective Solution: Ultra-high strength allows for thinner sections, dramatically reducing tower weight and costs.

International Grade Comparison

🇨🇳 Q460FTC (GB/T 28410-2012)
C: ≤0.20%
Mn: 1.00-1.70%
P: ≤0.025%
S: ≤0.015%
Si: ≤0.60%
Als: ≥0.015%
Yield: ≥460MPa (≤16mm)
Impact: 0°C (47J)
🇪🇺 EN 10025-2 S460 Series
C: ≤0.20%
Mn: ≤1.70%
P: ≤0.035%
S: ≤0.035%
Si: ≤0.60%
N: ≤0.012%
Yield: ≥460MPa
Impact: JR=20°C / J0=0°C / J2=-20°C
Functional Equivalent: Q460FTC ≈ S460J0 (0°C impact)
🇺🇸 ASTM A709 Gr.70 (A709Gr70)
C: ≤0.23%
Mn: 0.60-1.35%
P: ≤0.035%
S: ≤0.035%
Si: 0.15-0.40%
Cu: ≥0.20%
Yield: ≥485MPa (70ksi)
Tensile: ≥550MPa
Note: Q460FTC has specified 0°C impact (47J) for wind tower applications.
Note: Q460FTC is the highest strength grade in the GB/T 28410-2012 series. EN S460J0 offers similar 0°C impact properties. ASTM A709 Gr.70 is a bridge-grade steel with comparable strength but different impact requirements.

Domestic Grade Comparison: Q420FTC / Q460FTD

Q420FTC
Impact: 0°C

Yield: ≥420MPa

Tensile: 520-680MPa

Impact Energy: 47J

Q460FTC ★
Impact: 0°C

Yield: ≥460MPa

Tensile: 550-720MPa

Impact Energy: 47J

Q460FTD
Impact: -20°C

Yield: ≥460MPa

Tensile: 550-720MPa

Impact Energy: 47J

Note: Q460FTC offers the highest yield strength (460MPa) in the standard with 0°C impact toughness. Q460FTD provides the same strength with -20°C impact for colder conditions.

Technical Specifications

Q460FTC Chemical Composition (GB/T 28410-2012, wt%)

Element Value / Range
C (max) 0.20
Mn 1.00~1.70
P (max) 0.025
S (max) 0.015
Si (max) 0.60
Nb (max) 0.070
V (max) 0.15
Ti (max) 0.050
Mo (max) 0.30
Cr (max) 0.60
Ni (max) 0.80
Cu (max) 0.55
Als (min) 0.015
N (max) 0.012
Note: Higher alloy content (Cr, Ni, Mo) for enhanced strength and hardenability.

Applications

Ultra-Large Wind Turbine Towers (10MW+)

Primary application for Q460FTC, offering ultra-high strength (460MPa yield) and 0°C impact toughness for the largest wind turbine tower structures requiring maximum load-bearing capacity. Ideal for next-generation offshore and onshore mega turbines.

  • Tower shell sections for ultra-large wind turbines (10MW+ capacity)
  • Flanges, ring stiffeners, connection brackets for heavy-load designs
  • Transition pieces and bottom sections for tallest towers (140m+ hub height)
  • Offshore wind power projects demanding maximum strength with reliable toughness

Available Supply Range

📏 Thickness

  • Plates: 8-150mm
  • Coils: 2.0-12.0mm

📐 Width & Length

  • Width: 900-5300mm
  • Length: 6000-12000mm
Lead Time: 35-50 days for ultra-high-strength grade

Custom Fabrication Services

Custom Cutting

Edge Beveling

Drilling & Punching

Bending & Forming

Quality & Manufacturing Assurance

ISO 9001:2015
CE Marking
SGS/BV/TÜV

Packaging & Logistics

  • Bundled with steel straps on wooden skids
  • Marking: Grade, size, heat number, weight, impact grade C (0°C)
  • FOB/CIF/CFR from main Chinese ports

Frequently Asked Questions

What is the difference between Q460FTC and Q420FTC?

Q460FTC has higher yield strength (460MPa vs 420MPa) and higher tensile strength (550-720MPa vs 520-680MPa), making it suitable for ultra-large wind turbines and tallest towers.

What are the international equivalents of Q460FTC?

Q460FTC is comparable to EN 10025-2 S460 series (S460JR/S460J0/S460J2) and ASTM A709 Gr.70 (A709Gr70), depending on impact temperature requirements.

Do you offer third-party inspection?

Yes, SGS, BV, TÜV available for pre-shipment inspection and mechanical testing verification.

Request a Quotation

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