Producer
SK Inc. Materials (SK Specialty / SK ecoplant)
Second largest global SiH4 producer; largest global WF6 producer; 1 trillion won capacity doubling investment; building US plant with Showa Denko for North American chipmakers
2
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Silane (SiH4) for Semiconductor CVD
45%Tungsten Hexafluoride (WF6)
30%Other Specialty Gases
25%
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Origin2023
SK Specialty (SK Inc. Materials) is the specialty semiconductor gas division of SK Group — the Korean chaebol that began in the 1930s in Suwon with a weaving and textiles business, pivoted to oil refining under the economic nationalism of Park Chung-hee's Korea, and diversified into energy, chemicals, semiconductors, and telecommunications through the 20th century. The semiconductor gas business represents SK Group's strategic investment in the materials supply chain that underpins TSMC, Samsung Foundry, and other advanced chipmakers. SK Specialty is the world's largest producer of tungsten hexafluoride (WF6) — used in chemical vapor deposition of tungsten metal for semiconductor contacts and via fills — and the second-largest producer of monosilane (SiH4) for silicon deposition. The company is investing approximately 1 trillion Korean won to double capacity, and is building a US specialty gas manufacturing facility in partnership with Showa Denko (Japan) to serve North American chip fabs. A Korean weaving company's conglomerate descendant is now the sole or dominant global supplier of specific process gases without which advanced semiconductor manufacturing cannot proceed — creating a critical concentration in the semiconductor supply chain that geopolitical disruption between Korea and major trading partners could instantly impact.
SK Inc. Materials (SK Specialty) ↗