🛠️ Invention or technique

Grain-oriented electrical steel (Goss)

Acero eléctrico de grano orientado (Goss)

Date
1933-1934 · confidence high
Place
Youngstown, Ohio, United States
Credited to
Norman P. Goss
Field
Matter & energy

What it is

A cold-rolling and annealing process that aligns the grains of silicon steel along the direction of magnetic flux, greatly lowering core losses. It became the material of every power transformer.

What it led to

  • high-efficiency power transformers
  • lower grid losses
  • insulation-coated grain-oriented steels (1960s)
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