manufactured · input
Tungsten or tungsten-alloy pins used in vial hot-forming machinery to shape molten glass. Erode over time, risking dimensional drift and tungsten particulate contamination in vial interiors.
12
Source countries
5
Companies
1
Goods affected
0
Claims on record
What depends on it
1 essential American goods rely on tungsten forming mandrels somewhere upstream in their supply chain.
Where it comes from
Share of global supply, by country.
| Country | Share of supply |
|---|---|
| CNChina | 44% |
| ATAustria | 16% |
| DEGermany (Federal Republic of Germany) | 15% |
| FRFrance | 5% |
| INIndia | 3% |
| JPJapan | 3% |
| SGSingapore | 3% |
| CACanada | 2% |
| CHSwitzerland | 2% |
| KRSouth Korea (Republic of Korea) | 2% |
| GBUnited Kingdom | 2% |
| NLNetherlands | 1% |
Who makes it
5 companies produce tungsten forming mandrels.
Austrian refractory-metals leader; tungsten/molybdenum metal, wire, rod and components — the dominant Western maker of tungsten forming pins/mandrels and lamp wire. Owns Global Tungsten & Powders (US).
Major Chinese integrated tungsten producer (APT, powder, carbide) — part of the China-dominated tungsten supply chain.
German specialty ceramics company headquartered in Selb, Bavaria. One of only a few vertically integrated zirconia ceramics producers in Europe. Produces both alumina and zirconia (including YSZ) structural ceramics from a single Selb site. Founded 1985 as Hutschenreuther Technische Keramik, integrated into H.C. Starck Group in 2001. Primarily serves European industrial ceramics markets; Materion acquired the electronic materials arm in 2021 but Selb ceramics operations are independent.
Tungsten miner — Sangdong mine (South Korea) and Panasqueira (Portugal); a flagship ex-China tungsten supply project.
US tungsten-carbide tooling and wear-component maker (cutting tools, mining bits, wear parts).
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