Knowledge

Rows of electrical steel coils stacked in a warehouse, lit from the side
Knowledge

CRNGO and the IE5 Motor Efficiency Standard

Non-grain-oriented electrical steel (NGOES, also sold as CRNGO) is the silicon steel used in motor and generator cores because its magnetic properties are close to uniform in every direction — unlike grain-oriented steel, which is optimized for one direction and built for transformers instead. As of this month, the honest answer to “can NGOES still

Two steel mill workers reviewing coil test data between rows of silicon steel coils during supplier qualification
Knowledge

Silicon Steel Supplier Diversification Risks

Key Takeaways Why Buyers Are Rushing to Add a Second Silicon Steel Supplier If you’re evaluating a silicon steel supplier you haven’t bought from before, you’re not doing it in a vacuum. Grid-scale demand has outrun grain-oriented electrical steel (GOES) capacity for two straight years, and the numbers back up what buyers are feeling on

Amorphous steel transformer with high-efficiency core design for power distribution
Knowledge

US Amorphous Transformer Mandate: 2026 Update

This covers the 2026 US policy fight over amorphous-core transformer mandates — who’s pushing to keep them, who’s pushing to unwind them, and what it signals for buyers of amorphous and grain-oriented electrical steel outside the US. It doesn’t cover the metallurgy of why amorphous cores behave differently from silicon steel — we’ve written about

CRGO grain-oriented silicon steel coils in a steel factory warehouse for global electrical steel supply
Knowledge

India Anti-Dumping Probe on CRGO: Buyer Impact

This covers India’s June 2026 anti-dumping investigation into imported CRGO electrical steel, and what it signals for grain-oriented silicon steel buyers in other markets. It doesn’t cover how to file comments in the Indian proceeding itself — that’s a question for trade counsel, not a steel supplier. Core Key Points DGTR’s Filing, in Plain Terms

Grain-oriented electrical steel coils stored in warehouse for transformer core manufacturing
Knowledge

Grain-Oriented Electrical Steel Shortage 2026

Is There Really a Grain-Oriented Electrical Steel Shortage? Yes, and it’s not a rumor buyers are trading at trade shows — it’s a structural gap between demand and a global production base that a handful of mills can actually supply. Grid operators, transformer manufacturers, and generator OEMs across Brazil, Europe, North America, and Africa have

Knowledge

Amorphous Core Transformers: Manufacturing Limits

Key Takeaways What Makes Amorphous Metal Different From CRGO Amorphous metal is a metal alloy with no crystalline structure at all. Its atoms sit in a disordered, glass-like arrangement instead of the ordered lattice found in conventional metals. That’s the whole story, metallurgically: it’s produced by cooling molten iron-based alloy at a rate of roughly

Transformer core manufactured using certified grain oriented electrical steel material
Knowledge

Core Loss Testing: Reading an Epstein Report

Key Takeaways What an Epstein Frame Actually Measures An Epstein frame is a standardized test rig: four coil windings arranged in a square, with strips of electrical steel — usually 30cm long, cut to a fixed width — laid inside to form a closed magnetic loop. A known AC magnetic field is applied, and the

Precision slitting line cutting electrical steel coil into narrow strips, with camber deviation diagram
Knowledge

Slitting Tolerances and Camber in Steel Coils

Key Takeaways Why Slit Quality Matters More for Electrical Steel Than Ordinary Steel Slitting a coil of mild steel for structural brackets and slitting a coil of CRGO or CRNGO for a transformer or motor core are not the same problem, even though the machinery looks nearly identical from across the shop floor. Ordinary steel

Electrical steel coil rolls for FOB CIF DDP import shipping
Knowledge

FOB vs CIF vs DDP for Electrical Steel Imports

Key Takeaways The Question Incoterms Actually Answer Most incoterms explainers lead with definitions — FOB stands for this, CIF stands for that. That’s not actually the useful starting point. The useful starting point is the question every incoterm is answering in a different way: at what specific point does responsibility for the cargo, including the

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