Composition & metallurgy

Silicon is a principal alloying element, with chemistry, texture, coating and very low impurity control optimized for magnetic performance. Grain-oriented and non-grain-oriented families are distinct products.

Common grades and standards

GOES (grain-oriented electrical steel) for transformer cores; NGOES (non-grain-oriented electrical steel) for motors and rotating machines. Products are commonly specified by maximum core-loss level, thickness and magnetic properties rather than a simple AISI number.

Applications

Power and distribution transformers, EV traction motors, industrial motors, generators, compressors, appliances and electrical equipment.

Engineering characteristics

Key properties include core loss, permeability, saturation, coating insulation, flatness and punching performance. Thinner gauges can reduce eddy-current losses but increase manufacturing complexity and cost.

Known manufacturers and producer regions

Japan — Nippon Steel, JFE; South Korea — POSCO; China — China Baowu/Wuhan Iron & Steel and other electrical-steel mills; Europe — thyssenkrupp Electrical Steel, voestalpine; India — domestic producers and processors serving transformer and motor markets.

Before specifying or purchasing

Confirm governing standard and edition, product form and dimensions, delivery/heat-treatment condition, mechanical properties, toughness, welding requirements, corrosion or wear environment, inspection/NDT, traceability and mill test certification. Manufacturer capability varies by plant and product line.

Element Folio engineering reference. Product names may be trademarks of their respective owners; manufacturer examples are indicative and should be verified against current mill catalogues.