manufactured · input
Ultra-thin (~25 µm) amorphous iron-silicon-boron alloy ribbon, trade-named Metglas (Hitachi/Proterial subsidiary). Used in amorphous core distribution transformers, which have 60–70% lower core losses than GOES-core equivalents. Metglas's Conway, SC facility is the only US producer. As US utilities upgrade to energy-efficient amorphous core units per DOE efficiency mandates, demand grows against a sole US source.
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Source countries
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Companies
1
Goods affected
0
Claims on record
What depends on it
1 essential American goods rely on amorphous metal ribbon (fe-si-b alloy) for distribution transformers somewhere upstream in their supply chain.
Where it comes from
Share of global supply, by country.
| Country | Share of supply |
|---|---|
| USUnited States | 40% |
| CNChina | 35% |
| JPJapan | 20% |
Who makes it
1 company produce amorphous metal ribbon (fe-si-b alloy) for distribution transformers.
Conway, South Carolina-based company and the only US manufacturer of amorphous metal ribbon for energy-efficient transformer cores. A wholly-owned subsidiary of Proterial Ltd. (formerly Hitachi Metals, Japan). As US DOE efficiency regulations mandate amorphous core distribution transformers, Metglas is the sole-source US supplier — but its production is controlled by a Japanese company whose parent is Hitachi.
