Q550FTE Arctic‑Grade Wind Power Steel

GB/T 28410-2012 | 550MPa Grade | -40°C Impact (34J) for extreme cold climate turbines

📏 Standard: GB/T 28410-2012
🏗️ Arctic/Subarctic wind towers
❄️ -40°C Impact 34J (Grade E)
💪 Yield ≥550 MPa (≤16mm)

Product Overview

This article introduces Q550FTE 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. Q550FTE is a high‑strength low‑alloy steel plate offering minimum yield strength of 550 MPa (≤16mm), excellent toughness at -40°C (Grade E, 34J), and complies with GB/T 28410‑2012 for wind tower construction in extremely cold environments requiring enhanced load capacity.

📊 Q550FTE Approximate Grade Lookup Table

Key Advantages

  • 550MPa Grade Strength: Minimum yield 550 MPa (≤16mm) for heavy‑load and tall tower designs.
  • Guaranteed -40°C Impact Toughness: Minimum 34J at -40°C (Grade E) – reliable for arctic and subarctic regions.
  • Enhanced Alloy Design: Higher Mn (≤1.80), Mo (≤0.50), Cr (≤0.80), Ni (≤0.80) for improved strength and hardenability.
  • 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.

Technical Specifications

Q550FTE Chemical Composition (GB/T 28410-2012, mass fraction %)

Element Q550FT E (max or range)
Grade Q550FT E
C (max) 0.20
Mn ≤1.80
P (max) 0.020
S (max) 0.010
Si (max) 0.60
Nb (max) 0.070
V (max) 0.15
Ti (max) 0.050
Mo (max) 0.50
Cr (max) 0.80
Ni (max) 0.80
Cu (max) 0.80
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

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Modern Production

Advanced continuous casting and controlled rolling

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In-process Inspection

Spectral analysis, UT testing, -40°C impact verification

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Full Documentation

MTC EN 10204 3.1/3.2 with -40°C impact results

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

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Frequently Asked Questions

What is the advantage of Q550FTE over Q550FTD?

Q550FTE offers guaranteed -40°C impact toughness (34J) compared to -20°C for Q550FTD, making it suitable for arctic and extremely cold climates.

Is Q550FTE suitable for offshore wind in cold seas?

Yes, -40°C impact meets requirements for northern North Sea, Baltic Sea, and subarctic offshore projects. For deeper arctic, consider Q550FTF (-50°C).

What is the MOQ for Q550FTE 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 with -40°C impact data.

For immediate inquiries, contact via WhatsApp. For detailed specs, visit the product page.
✅ Q550FTE (Grade E, -40°C impact, 34J) · Yield 550/550/530 MPa (≤16/≤40/≤100) · GB/T 28410-2012 · Mill certificate included