Importing yttria-stabilized zirconia (YSZ) into Korea in 2026 is no longer a routine customs exercise — it is an export-control problem that starts before the goods ever leave the origin country. As of July 2026, China's April 2025 export controls place yttrium under a per-shipment licensing regime with no concentration floor, which puts YSZ powder at high risk of falling within scope while leaving sintered finished goods in a gray zone. This guide walks through the control's mechanics, the HS-code mismatch that surfaces at the border, the K-REACH and strategic-goods checks, and a sourcing and contract structure that keeps procurement moving. It is a companion to our 2026 YSZ market outlook; note upfront that several figures — Korean tariff rates in particular — are item-specific and must be confirmed case by case, and that the control interpretation below is not legal advice.
The Yttrium Control (1C908) in Detail
On April 4, 2025, China's MOFCOM and General Administration of Customs issued Announcement No. 18, designating seven medium and heavy rare earths — yttrium, samarium, gadolinium, terbium, dysprosium, lutetium, and scandium — as controlled and requiring a MOFCOM license for each export shipment. Yttrium's control classification is 1C908, with sub-items as follows.
| Classification |
Scope |
Example HS codes |
| 1C908(a) metals / alloys |
Yttrium-zirconium alloy named as a target |
3824999922, 8486909110 |
| 1C908(b) oxides and their mixtures |
Y₂O₃ and mixtures |
2846901100, 2846901993, 3824999922 |
| 1C908(c) compounds and their mixtures |
Yttrium compounds |
— |
The point that shapes everything downstream: there is no concentration-floor threshold. A low yttrium content is therefore hard to use as a defense against inclusion. And the fact that item (a) explicitly names yttrium-zirconium alloys signals that the authorities intended to capture Y-Zr systems specifically. This is the same control frame first seen with scandium, which we analyzed in How China's scandium export controls reshaped the SOFC supply chain; the full sequence is tracked in our China export-controls timeline.
The Y₂O₃ Price Trajectory
The control fed straight into the yttrium feedstock price.
| Point in time |
Y₂O₃ price (approx.) |
| Before controls |
< USD 8/kg |
| Late 2025 (Europe) |
~USD 270/kg |
| May 2026 |
~USD 1,100/kg |
Shipments outside China fell roughly 50%, and an artificially split dual price emerged — a European spike against a lower Chinese domestic level. For an importer, this means yttrium's share of YSZ cost is rising fast, and any quote should be re-derived against the yttrium cost at the time of quotation rather than carried over from historical pricing.
Powder High Risk, Finished Goods Gray Zone
How a YSZ product is classified against 1C908 depends heavily on its form.
- Given the announcement's language — "yttrium oxide and its mixtures" — and the breadth of HS 3824999922 (mixtures), a YSZ powder carrying 4–8 mol% Y₂O₃ has a high likelihood of being caught. With no concentration floor, a low-content defense is weak.
- A sintered finished good (a dental block, a fully coated component) differs in character from "mixtures and powders" and therefore sits in a gray zone.
- The workable summary is powder = high risk, finished goods = gray zone. Because no definitive interpretation exists, we recommend obtaining a legal opinion before initiating any transaction. This article does not provide a settled interpretation.
The HS-Code Mismatch at the Border
Pure ZrO₂/YSZ can be viewed from the Korean import side as 2825.60 (zirconium oxide), but the Chinese export side declares it under 2846.90 (yttrium compounds) or 3824.99 (mixtures) in order to capture the yttrium control. This export-import tariff-line mismatch creates risk across customs clearance, origin determination, and strategic-goods screening. The practical mitigation is to file for an advance classification ruling (품목분류 사전심사) so the applicable line is fixed before shipment.
A note on tariff rates: the exact Korean duty on 2825.60 — the basic/MFN rate and whether it is phased out under the Korea-China FTA — is not confirmed here and should be verified item by item through the customs law information portal. Korea import statistics for zirconium oxide, and the existence of any antidumping or import restriction, likewise remain to be confirmed with primary sources.
K-REACH and Strategic-Goods Checks
Two regulatory checks run in parallel with the customs question.
- K-REACH: confirm whether ZrO₂ (CAS 1314-23-4) and Y₂O₃ (CAS 1314-36-9) trigger a registration obligation at the annual 1-tonne threshold, via the KCID chemical information system. Treat this as "needs confirmation" rather than settled.
- Strategic goods / Foreign Trade Act: check whether yttrium-containing material is subject to a catch-all (situational) permit requirement on the Korean export/re-export side.
A Three-Track Sourcing Structure
The three-track structure validated in our ScSZ work transfers directly to YSZ. The supplier landscape it draws on is mapped in the ScSZ electrolyte supplier landscape.
- China licensing track: vertically integrated, price-competitive lines such as Guangdong Orient Zirconic (zircon sand → ZOC → YSZ full chain) and Shandong Sinocera. Because yttrium control means a per-shipment MOFCOM license is a precondition, design the civilian-end-use documentation alongside the order.
- Japan non-controlled track: premium lines such as Tosoh (TZ 3Y/8Y series) and Daiichi Kigenso (DKKK). A safety valve that assures supply continuity without regulatory risk.
- Domestic track: Korean producers such as Cenotec — minimal customs and FX risk, shorter lead times, though the range of high-grade powders on offer should be confirmed.
Vendor due diligence carries over the standard checklist, but for YSZ the yttrium feedstock security item — a supplier's Y₂O₃ sourcing path, inventory, dual-price exposure, and licensing record — should be treated as the top priority.
Contract Defense
The contract frame established in our ScSZ work transfers as well.
- Export License Contingency: insert a clause voiding the contract and refunding any advance payment if an export license is not granted (essential on the China track).
- Incoterms design: for the license-exposed China line, structure on FOB/FCA so export-clearance responsibility sits with the seller.
- Dual-price response: include a price re-derivation or indexation clause to absorb sharp swings in the yttrium feedstock cost.
A workable sequence is: month 1 — obtain the legal opinion on yttrium inclusion, file the HS advance classification ruling, and check K-REACH obligations; month 2 — make initial contact with vendors on all three tracks, secure samples, and run lot verification (SEM/EDS, PSA, XRD); month 3 — fix the contract frame including the Export License Contingency and place a small pilot order to test customs and quality in practice. The broader logic of licensing-era procurement is set out in Procurement strategy in the age of export controls.
Frequently Asked Questions
Is YSZ powder banned from export out of China?
No. It is not an embargo but a licensing regime. Yttrium falls under classification 1C908, and each export shipment requires a MOFCOM license. With no concentration floor, YSZ powder has a high likelihood of being in scope, but shipments with documented civilian end use have room to clear the licensing gate. A legal opinion is recommended before committing.
Are YSZ finished goods controlled the same way as powder?
Not clearly. Sintered finished goods differ in character from "mixtures and powders" and sit in a gray zone, whereas powder is high risk. No definitive interpretation exists, so this should be confirmed by a legal opinion rather than assumed either way.
What tariff applies when importing YSZ into Korea?
That depends on the item's classification and is not stated as a fixed figure here. Pure zirconium oxide may be viewed as HS 2825.60 on the import side, but the exact Korean rate and any FTA phase-out must be confirmed item by item, and the export-side declaration may use a different line. An advance classification ruling is the safer route.
How should a buyer handle the yttrium price volatility?
Re-derive quotes against the yttrium feedstock cost at the time of quotation rather than relying on historical unit prices, and include a price re-derivation or indexation clause in the contract to absorb swings.
References (Public Sources)
- China MOFCOM Announcement No. 18 (April 4, 2025)
- Holland & Knight; CIRS Group — analysis of China's medium/heavy rare earth controls
- Rare Earth Exchanges; The Oregon Group — yttrium price movements, 2025
- Metal Tech News — Lynas heavy rare earth output plans
- Flexport; Korea Customs (UNI-PASS) — HS 2825.60 reference
- Tosoh; Sinocera; Guangdong Orient Zirconic; Cenotec — supplier product data
Nami Tech Solution (NTS) is a Korea-based trading company specializing in global sourcing of semiconductor and energy materials. We manage procurement risk for controlled and control-adjacent materials like YSZ through material sourcing, lot-level quality verification (SEM/EDS, PSA, XRD), dual sourcing, FTA tariff, customs and K-REACH support, and domestic inventory buffering.
