Electrical Steel (Grain-Oriented)

Description

1. Product Overview
Grain-Oriented Electrical Steel (GOES) is a specialized ferromagnetic alloy precision-engineered to exhibit superior magnetic permeability and extremely low core loss when magnetized in the rolling direction. It serves as the critical core material for power and distribution transformers, directly determining energy efficiency and operational reliability in electrical grids. Strategically vital amidst global decarbonization mandates, our GOES enables transformer manufacturers to meet stringent Tier 1 (e.g., DOE 2016, EU EcoDesign) efficiency standards while reducing total lifecycle energy costs by up to 30%.

2. Key Specifications & Technical Characteristics

• Material Composition: Fe-Si alloy (typically 2.8–3.4% silicon, max 0.015% carbon, controlled grain orientation via Goss texture)

• Purity / Grade: Available in conventional (CGO) and high-permeability (Hi-B) grades; core loss guaranteed at 1.7T / 50Hz (e.g., 0.85–1.30 W/kg for MOH grade)

• Physical Form: Cold-rolled coil; thickness from 0.18 mm to 0.35 mm; insulation coating (C2, C3, C5, or T2) per ASTM A976

• Density: 7.65 g/cm³ (nominal)

• Packaging: Internationally standardized export-wound coils (eye horizontal) on wooden skids, anti-rust VCI paper + shrink-wrap, with steel strapping

• Shelf Life: Indefinite under dry, non-corrosive storage (≤60% RH, 5–40°C)

3. Core Industrial Applications

• Primary Industries: Power transformer manufacturing, distribution transformer production, renewable energy grid integration, traction transformer builders (rail/high-speed rail)

• Operational Use Cases:

  • *100 MVA+ power substation transformers* – Achieves ≤0.90 W/kg core loss, lowering no-load losses by 25–35% vs. conventional non-oriented steel

  • Smart grid distribution transformers – Enables amorphous-metal-like efficiency at lower manufacturing cost and higher mechanical robustness

  • Offshore wind farm step-up transformers – Hi-B grade reduces magnetostriction noise and withstands DC bias events

• Performance Advantage: 15–20% lower specific total loss versus standard CGO steels from competing non-premium mills, directly reducing transformer core weight and copper winding requirements.

4. Competitive Advantages

• Quality Consistency: ISO 10113 & ASTM A876 certified; every coil laser-tested for core loss uniformity (±3% coil-to-coil variance) – verified by third-party lab reports included with each shipment.

• Supply Reliability: Dedicated production lines with 450,000 MT annual capacity; 98% on-time-in-full (OTIF) delivery rate over 24 months across Asia, Europe, and Americas.

• Logistics Capability: Port-side warehousing in Rotterdam, Houston, and Shanghai enable 7-day lead times for spot orders.

• Price Competitiveness: Tier-1 Japanese/German metallurgy at 8–12% below EU/US domestic benchmark prices; multi-year fixed pricing available for contract volumes ≥500 MT.

• Sustainability: Produced using EAF + continuous casting with 72% recycled scrap content; certified low-CO₂ (≤1.4 t CO₂e per ton finished steel). Full REACH and RoHS compliance documentation provided.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20MT (mix of grades/widths allowed within same container)

• Loading Capacity: 20–22 MT per 20-foot dry container (depending on coating type and coil inner diameter)