Producer
SK Materials
World's largest NF₃ AND one of top WF₆ producers; subsidiary of SK Group. Revenue ~₩1.2T (2024). Operates Gyeongbuk (Yeongju) facility for both NF₃ and WF₆ using shared HF/F₂ feedstock infrastructure. SK Materials is the only company in the world that is simultaneously a top-3 producer of both NF₃ (chamber cleaning) and WF₆ (CVD tungsten) — making it a dual critical chokepoint for advanced semiconductor manufacturing.
6
Inputs supplied
1
Goods downstream
1
Facilities
0
Stories
What they make
6 inputs SK Materials supplies
Click an input to see every good that depends on it, every country that produces it, and every other company in the supply chain.
chemical
Nitrogen Trifluoride (NF₃) — Chamber Cleaning →
chemical
Tungsten Hexafluoride (WF₆) — CVD Precursor →
chemical
Disilane (Si₂H₆) — Low-Temperature CVD →
chemical
Disilane (Si₂H₆) — Low-Temperature CVD →
chemical
Monosilane (SiH₄) — CVD Precursor →
chemical
Monosilane (SiH₄) — CVD Precursor →
Where it shows up
Goods downstream
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What else they do
Business segments
The company's full revenue map, where this supply-chain role fits within their broader business.
NF₃ (Nitrogen Trifluoride)
45%WF₆ (Tungsten Hexafluoride)
28%Silicon Hydrides (SiH₄, Si₂H₆)
18%Other Special Gases & Fluorine Chemistry
9%
Intelligence
What's known
Sourced claims about this company's role in supply chains, chokepoints, concentration, incidents, dual-use connections.
Concentration2023
SK Materials is the only company in the world that is simultaneously a top-3 producer of NF₃ (chamber cleaning) AND WF₆ (CVD tungsten precursor) — two distinct and separately critical semiconductor process gases. These gases are made at the same Gyeongbuk plant using shared HF and F₂ feedstock. A single fire, explosion, or plant shutdown at this facility would simultaneously constrain two irreplaceable semiconductor process gas inputs.
Expert Market Research ↗Did you know2023
SK Materials also produces WF₆ (tungsten hexafluoride) — used in chemical vapor deposition of tungsten contacts and vias in semiconductor devices. WF₆ and NF₃ are made using overlapping HF and F₂ feedstocks and production equipment. SK Materials is therefore a single-point-of-failure for TWO critical semiconductor process gases simultaneously: the dominant NF₃ cleaner and the dominant CVD tungsten precursor.
Expert Market Research ↗Capacity2023
SK Materials is one of only two companies in the world (alongside Air Products, which holds ~30% WF₆ share) that is simultaneously a top-3 producer of BOTH NF₃ (chamber cleaning gas) AND WF₆ (tungsten CVD precursor) — the two most critical fluorine-based gases for advanced semiconductor node manufacturing. NF₃ market: SK Materials #1 (~35%), Kanto Denka #2 (~20%), Mitsui Chemicals #3. WF₆ market: Air Products #1 (~30%), SK Materials #2 (~25%), Merck KGaA #3. A supply disruption at SK Materials' Gyeongbuk facility would simultaneously constrain chamber cleaning capacity AND tungsten metallization across leading fabs in Korea, Taiwan, and the US.
SK Materials Co., Ltd. ↗Origin2023
SK Materials was established as a specialty chemicals subsidiary within SK Group — the Korean chaebol that also owns SK Hynix (world's #2 DRAM manufacturer) and SK Innovation (lithium-ion batteries). SK Materials was built to supply the fluorine-chemistry specialty gases that semiconductor fabs require: NF₃ for chamber cleaning and WF₆ for tungsten CVD. This vertical integration means SK Group simultaneously manufactures advanced memory chips (SK Hynix) AND produces the critical process gases those fabs depend on. SK Materials is headquartered in Gyeongbuk, South Korea, operating out of the same Yeongju industrial complex where it uses shared fluorine/HF infrastructure for both its NF₃ and WF₆ production lines.
SK Materials Co., Ltd. ↗