Q420FTF Polar‑Grade Wind Power Steel

GB/T 28410-2012 | 420MPa Yield | -50°C Impact (34J) – Extreme Arctic Toughness

📏 Standard: GB/T 28410-2012
🏗️ Arctic/Antarctic wind towers
❄️ -50°C Impact 34J (Grade F)
💪 Yield ≥420 MPa (≤16mm)

Product Overview

This article introduces Q420FTF 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. Q420FTF is a high‑strength low‑alloy steel plate offering 420 MPa minimum yield, the highest low‑temperature toughness at -50°C (Grade F, 34J), and complies with GB/T 28410‑2012 for wind tower construction in extreme arctic environments requiring maximum cold resistance.

📊 Q420FTF Approximate Grade Lookup Table

Key Advantages

  • Highest Low‑Temperature Toughness: Guaranteed 34J at -50°C (Grade F) – suitable for Arctic, Antarctic, and permafrost regions.
  • High Strength: Minimum yield 420 MPa (≤16mm) for heavier loads and taller towers.
  • Superior Purity: Low P (≤0.020) and S (≤0.010) for enhanced low‑temperature performance.
  • Optimized Weldability: Low carbon (C≤0.20) and micro‑alloying (Nb, V, Ti) for excellent field welding.
  • Strict Quality Control: Full traceability with EN 10204 3.1/3.2 certification.

Technical Specifications

Q420FTF Chemical Composition (GB/T 28410-2012, mass fraction %)

Element Q420FT F (max or range)
Grade Q420FT F
C (max) 0.20
Mn 1.00~1.70
P (max) 0.020
S (max) 0.010
Si (max) 0.50
Nb (max) 0.060
V (max) 0.15
Ti (max) 0.050
Mo (max) 0.20
Cr (max) 0.30
Ni (max) 0.50
Cu (max) 0.30
Als (min) 0.015
N (max) 0.010
Note: The lower limit of Mn content for normalized delivery shall be as specified. No lower limit required for other conditions.

Quality & Manufacturing Assurance

🏭

Modern Production

Advanced continuous casting and controlled rolling

🔬

In-process Inspection

Spectral analysis, UT testing

📋

Full Documentation

MTC EN 10204 3.1/3.2

ISO 9001:2015 CE Marking (PED) SGS Inspection Mill Certificate 3.1

Packaging & Logistics

  • Standard Packaging: Steel plates bundled with steel straps on wooden skids. Coils wrapped with waterproof paper.
  • Marking: Grade, size, heat number, weight clearly marked.
  • Logistics: FOB, CIF, CFR from main Chinese ports.
  • Lead Time: 25-35 days after order confirmation.

Request a Quotation

Interested in Q420FTF polar‑grade steel for extreme cold wind towers? Fill out the form below. We'll reply within 12 hours.

This form uses Formspree. Your information will be sent securely.

Frequently Asked Questions

What is the main advantage of Q420FTF over Q420FTE?

Q420FTF guarantees impact toughness at -50°C (34J) compared to -40°C for Q420FTE, making it the highest toughness grade. It is essential for Arctic, Antarctic, and other environments below -40°C.

Is Q420FTF suitable for offshore wind in polar regions?

Absolutely. Its -50°C impact toughness meets the most stringent requirements for offshore wind projects in the Arctic Ocean, Barents Sea, and Antarctic research stations.

What is the MOQ for Q420FTF plates?

25MT for plates, 50MT for coils. Trial orders (10-15MT) may be accepted after discussion.

Third-party inspection available?

SGS, BV, TÜV inspection can be arranged at extra cost; mill certificate EN 10204 3.1 is always included.

For immediate inquiries, contact via WhatsApp. For detailed specs, visit the product page.
✅ Q420FTF (Grade F, -50°C impact, 34J) · GB/T 28410-2012 · Mill certificate included