Material · Processed graphite

Uncoated spherical graphite

Uncoated spherical purified graphite (uSPG) — purified graphite milled and shaped into rounded particles, the immediate precursor to coated spherical purified graphite. DOE's supply-chain map places uSPG on both the natural and synthetic branches. Spherical graphite reaches world markets overwhelmingly as Chinese exports; the first U.S. commercial plant began production in February 2024.

Facts on this page last re-verified Aug 12, 2026 — the oldest verification date among its current claims. How we verify.

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