COMPANY PROFILE / FUNCTIONAL MATERIALS
Shin-Etsu Chemical
A Japanese materials group that links rare earth separation to sintered neodymium magnets (focused on its magnet business)
Shin-Etsu Chemical is a diversified materials group known for semiconductor silicon, PVC and silicones. This profile covers only its rare earth magnets. The company has separated and refined rare earths since the 1960s and, according to its own timeline, began volume production of samarium-cobalt magnets in 1976 and neodymium magnets in 1986. Today it makes magnets in Japan, the Philippines, Thailand, Vietnam and China, centered on its Takefu Plant in Fukui Prefecture, and it cites products that use much less heavy rare earth, and recycling, as strengths. At the same time, magnet sales, profit and output are not disclosed. We write only what public documents let us confirm.
- Shin-Etsu Chemical in 30 seconds, and where it sits in functional materials
- Logo and naming
- Where the company sits in functional materials
- Company size (brief)
- Resources committed to functional materials
- Track record so far
- Plans ahead
- What the company seems to be aiming for
- Partnership map in functional materials
- Technology, products and services
- Risks
- Glossary / References / Claim-to-source audit
1. Shin-Etsu Chemical in 30 seconds, and where it sits in functional materials
Founded 16 September 1926Company profile as of 31 March 2026
Securities code 4063Magnets sit inside the Electronics Materials segment
1986 NdFeB magnetsCompany timeline; the company calls the 1976 start the world’s first commercial production
Vietnam and ChinaSeparation and refining at the Takefu Plant (Fukui)
and recyclingFrom the “competitive advantages” in Annual Report 2026
Where MP Materials and Niron Magnetics are described as “new supply chains” for permanent magnets, Shin-Etsu Chemical is an established player that has linked rare earth separation and magnet manufacturing for decades Sourced. The company’s growth strategy as described in Annual Report 2026 centers on semiconductor-related products such as silicon wafers and photoresists, and magnets are one part of the Electronics Materials segment. Because magnet sales, output and profit are not disclosed, we cannot discuss the size of the business in numbers Not yet confirmed. What the company does publish is its technology and product grades for reducing the heavy rare earth content (terbium, dysprosium and others).
2. Logo and naming
Naming note: the legal name is Shin-Etsu Chemical Co., Ltd.. Its subsidiaries include Shin-Etsu Handotai (semiconductor silicon) and Shintech (U.S. PVC), but magnets are handled by Shin-Etsu Chemical’s Magnetic Materials Division and its overseas magnet subsidiaries; we keep these separate. In its English documents the company calls the year April 2025 to March 2026 “FY2025”; this article writes it as “the year to March 2026.” The logo is the one published on the company’s official website.
Official site: https://www.shinetsu.co.jp/en/3. Where the company sits in functional materials
Shin-Etsu Chemical is a materials and raw-material maker, and its core in this field is the sintered neodymium (Nd-Fe-B) magnet. The company also makes magnetic circuits and magnet assemblies, including magnet assemblies for hard disk voice coil motors, but this article stays with magnets as a material. For the basics of permanent magnets, see our explainer on permanent magnets and rare earths; for technologies that reduce or avoid heavy rare earths, our explainer on rare-earth-free magnets helps. In this series, see also our profiles of MP Materials (rare earth mining, separation and magnets) and Niron Magnetics (a new iron-nitride magnet).
4. Company size (brief)
Company-wide size is below. The size of the magnet business is not disclosed Sourced.
| Metric (¥ million) | Year to March 2025 | Year to March 2026 |
|---|---|---|
| Consolidated net sales | 2,561,249 | 2,573,969 |
| Consolidated operating income | 742,105 | 635,204 |
| Electronics Materials segment net sales | 934,312 | 1,015,765 |
| Electronics Materials segment operating income | 324,760 | 344,537 |
| R&D costs (whole company) | 73,129 | 77,819 |
| Capital expenditure (whole company) | – | 339,706 |
| Capital expenditure (Electronics Materials segment) | 245,500 | 212,366 |
| Metric | Figure | Date |
|---|---|---|
| Consolidated employees | 27,342 | 31 March 2026 |
| Electronics Materials segment employees | 13,566 | 31 March 2026 |
| Capital | ¥119,419 million | 31 March 2026 |
These are whole-company and whole-segment figures. According to the company, the main items in the Electronics Materials segment’s ¥212,366 million of capital spending were raising semiconductor silicon wafer quality and building photoresist production facilities; magnets are not named. Magnet sales, operating income, capital spending and R&D are all not disclosed, and this article does not estimate them Not yet confirmed.
5. Resources committed to functional materials
The table shows, for each of the four resource types, whether primary sources let us confirm it.
| Resource type | Details | Status |
|---|---|---|
| People | Magnet headcount is not disclosed. The company has a Magnetic Materials Division and a Magnetic Materials Research Center at the Takefu Plant. The whole Electronics Materials segment has 13,566 employees | Sourced (headcount not disclosed) |
| Money (capital spending and R&D) | Magnet-only capital spending and R&D are not disclosed. The company timeline records capacity increases for magnet blocks and machining in Vietnam (2023, 2024), machining in Japan (2022) and magnet blocks at the Takefu Plant (2025), without amounts | Sourced (amounts not disclosed) |
| Outside investments, acquisitions, joint ventures, divestitures | We could not confirm any acquisition of or investment in another company in magnets. Overseas magnet production and sales run through subsidiaries (Philippines and Vietnam are wholly owned and consolidated, Thailand is an unconsolidated subsidiary, plus a unit in Fujian, China). In 2026 it began a recycling collaboration with Daikin Industries, Hitachi and Tokyo Eco Recycle. Separately, Proterial (formerly Hitachi Metals) states in its August 2025 notice that it licenses some of its sintered rare earth magnet patents to Shin-Etsu Chemical, with restrictions on manufacturing and sales for China | Sourced (acquisitions not found) |
| University, research-institute and public-funding links | Annual Report 2026, the earnings-call summaries and the magnet website mention no joint research with universities or national laboratories and no public subsidies for magnets that we could confirm | Not found |
Status of key sites and facilities
| Site / facility | Details (company timeline and documents) | Stage | Date | Source |
|---|---|---|---|---|
| Takefu Plant (Echizen, Fukui Prefecture) | Rare earth separation and refining (volume production from 1967; a solvent-extraction mass-production plant in 1987). Houses the Magnetic Materials Research Center. Magnet block capacity increased in 2025 | Operating | Founded 1945; through 2025 | References 10, 14 |
| Asahi Branch Plant (Japan) | Machining of sintered magnets and magnetic-circuit assembly. Grain boundary diffusion (GBDP) mass production started in 2012. Machining capacity increased in 2013 and 2022 | Operating | From 1984 | Reference 10 |
| Vietnam subsidiary (Haiphong) | Recycling started in 2013, magnet block process in 2016, machining in 2019; capacity increased in 2023 and 2024. An employee message in the Annual Report describes integrated production from refining and recycling through finished magnets, and mentions a project to build a new plant | Operating (new plant is a plan) | 2013-2024 | References 3, 10 |
| Philippines, Thailand and China (Fujian) subsidiaries | Operations started in the Philippines in 1999, Thailand in 2006 and Changting, Fujian, in 2013 | Operating | 1999-2013 | References 10, 11 |
| Recycling | Magnet powder from processing has been recycled since 2007, and used magnets since March 2013 (company statements). From 2026 the company is developing automation equipment for Japan’s first circular system for magnets from commercial air-conditioner compressors, with full-scale operation planned for 2027 | Operating / planned | 2007 to 2027 (plan) | Reference 1 |
Neodymium magnets in general tend to lose magnetization when exposed to a reverse field in a hot motor, and the property that resists this is coercivity (HcJ) (a general explanation). Heavy rare earths such as terbium and dysprosium are used to raise coercivity. The company describes its grain boundary diffusion alloy method as a technology that “places a small amount of heavy rare earth in the right position to dramatically increase coercivity,” and says that concentrating heavy rare earth near the grain boundaries raises coercivity further and suppresses the loss of remanence compared with the conventional “two-alloy method” Sourced. Its timeline records that development began in 2004, production of N-series magnets with this process started in 2008, and mass production in 2012.
In the N Series lineup the company publishes (manufacturer’s stated values), compare two grades in the “N52” class: N52-F (perpendicular-field press type) has Br 1.41-1.47 T and HcJ of at least 995 kA/m, while N52UH-HGF (grain boundary diffusion type) has Br 1.40-1.46 T and HcJ of at least 1,910 kA/m. With nearly the same Br range, the lower limit of HcJ is about 1.9 times higher (1,910 ÷ 995) Our calculation. This compares two products within one company’s own table; it says nothing about superiority over other makers’ products. The table gives no test temperature or other conditions, so coercivity at operating temperature cannot be read from it.
6. Track record so far
| When | Event | Meaning |
|---|---|---|
| 1945 | Takefu Plant established | Base for rare earths and magnets |
| 1961-1969 | Rare earth research begins (1961), volume separation and refining (1967), samarium production (1969) | Accumulating raw-material-side technology |
| 1970-1976 | Research into rare earth magnets begins (1970). SmCo magnet volume production starts in Japan in 1976 (the company calls it the world’s first commercial production) | Start of the magnet business |
| 1983 | Mass production of magnets for hard disk voice coil motors | HDDs a long-standing main use |
| 1985-1986 | Trial production of NdFeB magnets (1985); volume production in Japan and a nickel-plating technique established (1986) | The mainstay Nd-Fe-B magnet |
| 1987 | Rare earth solvent-extraction mass-production plant built | Volume separation and refining |
| 1998-2006 | Fully automated magnet plant (1998); operations start in the Philippines (1999) and Thailand (2006) | Overseas production expands |
| 2004-2012 | Grain boundary diffusion process (GBDP) developed (2004), N-series production starts (2008), mass production at the Asahi Branch Plant (2012) | Using heavy rare earths efficiently |
| 2007-2013 | Recycling plant (2007), recycling operations in Japan (2008) and Vietnam (2013), a Fujian, China, site (2013) | Resource circulation |
| 2016-2019 | Magnet block process (2016) and machining (2019) start in Vietnam | Forming an integrated production site |
| 2022-2025 | Machining capacity increased in Japan (2022); block and machining capacity in Vietnam (2023, 2024); magnet block capacity at Takefu (2025) | Expanding supply capacity |
| 2026 | Began a collaboration with Daikin Industries, Hitachi and Tokyo Eco Recycle to recover and reuse magnets from commercial air-conditioner compressors. In the April and July earnings calls it mentioned reducing heavy rare earth use and handling raw-material issues | Responding to supply risk |
7. Plans ahead
by end of 2026Statement on the April 2026 earnings call (target)
All of these are company plans or statements, not things already achieved Not yet confirmed.
None of the following was found in official sources Not yet confirmed.
Magnet sales, operating income, output and global share / capital spending for magnets / the scale, investment and start-up date of the new Vietnam plant / names of major customers (the company mentions only HDD and automotive uses) / heavy rare earth sources and inventories / joint research with universities or public institutions.
8. What the company seems to be aiming for
This section includes things the company does not say directly. They are inferences from what primary sources show, given with their grounds.
| What we read from the record | Primary-source grounds | Status |
|---|---|---|
| Its strength is integration from raw material to product | Annual Report 2026 lists, as a magnet competitive advantage, an integrated production system starting from raw materials and stable supply from multiple sites | Sourced |
| Differentiation rests on less heavy rare earth and recycling | The same place lists “products that substantially reduce the use of heavy rare earth materials and promotion of recycling” | Sourced |
| The 2026 statements are a response to China’s export controls and heavy rare earth supply | The April and July 2026 earnings calls mention reducing heavy rare earth use and “multiple measures” on raw-material issues. In April 2025 China placed items including dysprosium and terbium under export control | Inference |
| Magnets are not the center of company-wide growth | The growth discussion in Annual Report 2026 centers on semiconductors (AI, data centers, the new Isesaki Campus); magnets appear as examples of use | Inference |
| It is building Vietnam into the core of integrated production | From recycling (2013) to blocks and machining (2016-2019), capacity increases (2023-2024) and a new-plant project | Inference |
The summary of the April 2026 earnings call says that for magnetic materials the company is working on “multiple measures to address raw material issues, including finding ways to further reduce the use of heavy rare earths by the end of this year.” In July it said it was working with customers on emergency measures to minimize the use of heavy rare earths Sourced. The company does not state why, but China’s Ministry of Commerce, in Announcement No. 18 of 4 April 2025, put items related to medium and heavy rare earths such as dysprosium and terbium under export control Sourced. Putting the two together, the company’s moves read as a defense against heavy rare earth supply risk. The company has not said so itself; this is our interpretation Not yet confirmed.
9. Partnership map in functional materials
10. Technology, products and services
The core product is the sintered neodymium magnet “N Series.” The company describes it as composed mainly of neodymium, iron and boron, using the relatively abundant neodymium and iron as main raw materials, and lists uses such as drive motors and generators for HEVs, EVs and FCVs, electric power steering, industrial motors, home-appliance motors (air-conditioner compressors and others), and actuators for digital cameras and smartphone cameras Sourced. It also supplies magnet assemblies for hard disk voice coil motors.
| Type (manufacturer’s stated) | Representative grade | Remanence Br [T] | Coercivity HcJ [kA/m] | Maximum energy product (BH)max [kJ/m³] (MGOe) |
|---|---|---|---|---|
| Perpendicular-field press type | N52-F | 1.41-1.47 | at least 995 | 382-422 (48-53) |
| Perpendicular-field press type | N50TH-MF | 1.38-1.44 | at least 1,353 | 366-406 (46-51) |
| Grain boundary diffusion type | N52UH-HGF | 1.40-1.46 | at least 1,910 | 374-422 (47-53) |
| Grain boundary diffusion type | N50UH-HGF | 1.38-1.44 | at least 1,989 | 358-406 (45-51) |
| Parallel-field press type | N31ZA | 1.07-1.14 | at least 2,387 | 207-255 (26-32) |
The values above are the manufacturer’s stated grade ranges from the company’s “N Series lineup,” and coercivity is a lower limit (“at least”). The table gives no test temperature or method. This article does not set these figures against values measured under other conditions or against other makers’ products Sourced. The company’s process description runs from separating and refining high-purity oxides from rare earth ore, through melting in a vacuum induction furnace, fine milling (a few microns), compaction in a magnetic field (to give anisotropy), and sintering (density rises from about 50% of true density to nearly 100%, with volume falling by about half), then aging, magnetic-property inspection, machining and plating.
According to the company, compaction in a magnetic field comes in two forms: perpendicular-field pressing, with the field perpendicular to the pressing direction, and parallel-field pressing. At equal grade the perpendicular method gives higher performance, but ring magnets can only be pressed in parallel Sourced. The table above fits this: the perpendicular-pressed grades show Br around 1.4 T, while the parallel-pressed N31ZA is 1.07-1.14 T with a very high coercivity. Shape constraints (ring or plate) set the attainable ceiling. The company also says that, because sintering shrinks the part, the magnets are ground to size with diamond abrasives, and that Nd-Fe-B magnets, which rust easily, are given nickel or paint surface treatments. A magnet’s performance is thus set not only by composition but by the whole process, including pressing direction, shape and surface treatment.
11. Risks
| Risk | Details | Status |
|---|---|---|
| Heavy rare earth supply | In 2026 the company mentioned reducing heavy rare earth use and multiple measures on raw-material issues. China’s Ministry of Commerce put items related to dysprosium, terbium and others under export control in Announcement No. 18 of 4 April 2025. We did not verify later measures or their suspension against government documents | Sourced (extent of impact not found) |
| Opacity of the magnet business | With no magnet sales, profit or output disclosed, outsiders cannot check profitability or competitiveness | Sourced |
| Concentration of uses | The company cites strong HDD demand and growth in automotive. We cannot quantify the effect of demand swings in one use from published documents | Inference |
| Patent exclusivity and alternatives | For its grain boundary diffusion alloy patents the company states that it does not license third parties. Patents expire, and alternative diffusion methods or magnets that avoid heavy rare earths (covered elsewhere in this series) could change the differentiation | Inference |
| Relationship to company-wide priorities | The company’s growth investment is concentrated in semiconductor materials; the priority given to magnets cannot be read from the documents | Inference |
| Delivery of the recycling collaboration | The air-conditioner magnet circular system is planned for full-scale operation in 2027; recovery volumes and economics are undisclosed | Sourced (target not yet confirmed) |
12. Glossary
- Sintered neodymium magnet
- A magnet made by pressing neodymium-iron-boron powder in a magnetic field and sintering it at high temperature; the strongest commercial permanent magnet for motors.
- Remanence (Br)
- The strength of magnetic flux remaining in a magnet after magnetization. Unit: T (tesla).
- Coercivity (HcJ)
- Resistance to demagnetization by a reverse field. Unit: kA/m (or Oe).
- Maximum energy product ((BH)max)
- A representative measure of magnet performance. Unit: kJ/m³ (or MGOe).
- Grain boundary diffusion
- Diffusing heavy rare earths into a sintered magnet from the grain boundaries to raise coercivity.
- Heavy rare earths
- Terbium, dysprosium and others, used in small amounts to raise coercivity.
- Perpendicular / parallel-field pressing
- In field-aligned pressing, whether the field is perpendicular or parallel to the pressing direction. Perpendicular performs better; rings need parallel.
- Voice coil motor (VCM)
- The motor that moves the head in a hard disk drive; it uses magnets.
13. References
- Shin-Etsu Chemical Annual Report 2026 (published August 2026). Business overview, magnet competitive advantages, recycling history, the collaboration with Daikin Industries and others, Electronics Materials segment figures and headcount. https://www.shinetsu.co.jp/wp-content/uploads/2026/08/Annual-Report_2026.pdf
- Shin-Etsu Chemical Financial Section for the year ended 31 March 2026 (Annual Report 2026). Consolidated results, segment sales and operating income, capital expenditure, R&D costs, list of consolidated subsidiaries. https://www.shinetsu.co.jp/wp-content/uploads/2026/08/Financial-Section.pdf
- Shin-Etsu Chemical Annual Report 2025, “Sources of Our Competitiveness.” Integrated production at the Vietnam plant and the new-plant plan (employee message). https://www.shinetsu.co.jp/wp-content/uploads/2025/07/Sources-of-Our-Competitiveness.pdf
- Shin-Etsu Chemical Annual Report 2025, “Business Activity.” Magnet strength relative to ferrite, sales policy for HDD and automotive uses, Electronics Materials figures. https://www.shinetsu.co.jp/wp-content/uploads/2025/07/Business-Activity.pdf
- Shin-Etsu Chemical Summary of the telephone conference on results for the year ended 31 March 2026 (28 April 2026). Remarks on raw-material issues and reducing heavy rare earth use in magnetic materials. https://www.shinetsu.co.jp/wp-content/uploads/2025/08/20260428_summary_E.pdf
- Shin-Etsu Chemical Summary of the telephone conference on results for the first quarter ended 30 June 2026 (24 July 2026). Remarks on emergency measures to minimize heavy rare earth use. https://www.shinetsu.co.jp/wp-content/uploads/2026/08/20260724_summary_E.pdf
- Shin-Etsu Chemical Company profile as of 31 March 2026. Address, founding, capital, consolidated employees, main products. https://www.shinetsu.co.jp/en/company/profile/
- Shin-Etsu Chemical Product page, “Neodymium magnet” (description of the N Series and its uses). https://www.shinetsu.co.jp/en/products/electronics-materials/neodymium-magnet/
- Shin-Etsu Chemical Rare earth magnet website, “N Series Lineup” (magnetic properties by grade). https://www.shinetsu-rare-earth-magnet.jp/e/products/data_nd.html
- Shin-Etsu Chemical Rare earth magnet website, “Shin-Etsu History” (magnet business timeline, 1945-2025). https://www.shinetsu-rare-earth-magnet.jp/e/profile/history.html
- Shin-Etsu Chemical Rare earth magnet website, “Network” (head office, plants and overseas sites). https://www.shinetsu-rare-earth-magnet.jp/e/profile/network.html
- Shin-Etsu Chemical Rare earth magnet website, “Raw material to sintering Block” (separation, melting, compaction and sintering) and the machining and plating pages. https://www.shinetsu-rare-earth-magnet.jp/e/masspro/sintering_p.html
- Shin-Etsu Chemical Rare earth magnet website, “Announcement GPD alloy method” (patent notice and technical explanation of grain boundary diffusion). https://www.shinetsu-rare-earth-magnet.jp/e/notice/
- Shin-Etsu Chemical Shin-Etsu Rare Earth website (ISO 9001 and ISO 14001 statement for the Takefu Plant). https://www.rare-earth.jp/en/
- Ministry of Commerce and General Administration of Customs of the People’s Republic of China Announcement No. 18 of 2025, “Announcing the decision to implement export control on some medium and heavy rare earth related items” (4 April 2025; English version). https://english.mofcom.gov.cn/Policies/AnnouncementsOrders/art/2025/art_0dd87cbee7b045bf93fabe6ab2faceee.html
- Google Patents US7488393B2, “Rare earth permanent magnet” (applicant: Shin-Etsu Chemical). Used to confirm a number listed in the patent notice for the grain boundary diffusion alloy method. https://patents.google.com/patent/US7488393B2/en
- Shin-Etsu Chemical Consolidated financial results for the first quarter ended 30 June 2026 (24 July 2026). A strategy slide lists “raw materials issues for magnetic materials business.” https://www.shinetsu.co.jp/wp-content/uploads/2026/07/20260724_con_E.pdf
- Shin-Etsu Chemical Official website (source of the logo). https://www.shinetsu.co.jp/en/
- Proterial Notice, “Sintered Nd-Fe-B Magnets” (5 August 2025): patents and licensees, including Shin-Etsu Chemical. https://www.proterial.com/e/pdf/pi20250805ec.pdf
14. Claim-to-source audit
| Claim in the text | Status | Source |
|---|---|---|
| Legal name, headquarters, founding, capital, 27,342 consolidated employees, main product categories | Sourced | Reference 7 https://www.shinetsu.co.jp/en/company/profile/ |
| Electronics Materials business (including rare earth magnets), segment sales and operating income, capital spending overview, R&D costs, consolidated sales and operating income | Sourced | Reference 2 https://www.shinetsu.co.jp/wp-content/uploads/2026/08/Financial-Section.pdf |
| Electronics Materials employees (13,566), magnet competitive advantages (integration, less heavy rare earth, recycling), recycling history, the collaboration with Daikin Industries and others | Sourced | Reference 1 https://www.shinetsu.co.jp/wp-content/uploads/2026/08/Annual-Report_2026.pdf |
| Magnet strength about 10 times that of ferrite (company statement), the HDD and automotive sales policy | Sourced (company statement) | Reference 4 https://www.shinetsu.co.jp/wp-content/uploads/2025/07/Business-Activity.pdf |
| Vietnam plant integration and new-plant plan (employee message) | Sourced (plan not yet confirmed) | Reference 3 https://www.shinetsu.co.jp/wp-content/uploads/2025/07/Sources-of-Our-Competitiveness.pdf |
| Mentions of heavy rare earths and raw-material issues on the April and July 2026 earnings calls | Sourced | Reference 5, 6 https://www.shinetsu.co.jp/wp-content/uploads/2025/08/20260428_summary_E.pdf https://www.shinetsu.co.jp/wp-content/uploads/2026/08/20260724_summary_E.pdf |
| N Series uses and the description of neodymium magnets | Sourced | Reference 8 https://www.shinetsu.co.jp/en/products/electronics-materials/neodymium-magnet/ |
| Grade values in the N Series lineup (manufacturer’s stated) | Sourced (manufacturer’s stated) | Reference 9 https://www.shinetsu-rare-earth-magnet.jp/e/products/data_nd.html |
| Magnet business timeline (1976 SmCo, 1986 NdFeB, 2004 GBDP development, site openings and expansions) | Sourced | Reference 10 https://www.shinetsu-rare-earth-magnet.jp/e/profile/history.html |
| List of overseas magnet sites (Philippines, Thailand, Vietnam, China) | Sourced | Reference 11 https://www.shinetsu-rare-earth-magnet.jp/e/profile/network.html |
| Sintering, compaction, machining and plating processes; perpendicular and parallel pressing | Sourced | Reference 12 https://www.shinetsu-rare-earth-magnet.jp/e/masspro/sintering_p.html |
| Patent notice for the grain boundary diffusion alloy method (use of heavy rare earths, no third-party licensing) | Sourced | Reference 13 https://www.shinetsu-rare-earth-magnet.jp/e/notice/ |
| ISO 9001 and ISO 14001 at the Takefu Plant (rare earth manufacturing) | Sourced | Reference 14 https://www.rare-earth.jp/en/ |
| MOFCOM / General Administration of Customs Announcement No. 18 of 2025 (4 April 2025) | Sourced | Reference 15 https://english.mofcom.gov.cn/Policies/AnnouncementsOrders/art/2025/art_0dd87cbee7b045bf93fabe6ab2faceee.html |
| Proterial licenses some of its sintered rare earth magnet patents to Shin-Etsu Chemical (restricted for China) | Sourced (Proterial notice) | Reference 19 https://www.proterial.com/e/pdf/pi20250805ec.pdf |
| U.S. patent record for the grain boundary diffusion alloy method (US7488393B2 and others) | Sourced | Reference 16 https://patents.google.com/patent/US7488393B2/en |
| The fiscal-year strategy slide on “raw-material issues for the magnetic materials business” | Sourced | Reference 17 https://www.shinetsu.co.jp/wp-content/uploads/2026/07/20260724_con_E.pdf |
| Magnet sales, operating income, output, share, capital spending and R&D | Not yet confirmed | Not stated in official sources; this article makes no estimate Reference 1 https://www.shinetsu.co.jp/wp-content/uploads/2026/08/Annual-Report_2026.pdf |
| Acquisitions of or investments in other companies in magnets; joint research with universities or public institutions | Not yet confirmed | Not stated in official sources; we do not assert they do not exist Reference 1 https://www.shinetsu.co.jp/wp-content/uploads/2026/08/Annual-Report_2026.pdf |
| Test temperature and method for the N Series figures | Not yet confirmed | Not stated in the lineup; this article does not infer them Reference 9 https://www.shinetsu-rare-earth-magnet.jp/e/products/data_nd.html |
| Ratio of HcJ lower limits between N52-F and N52UH-HGF (about 1.9 times) | Our calculation | This article’s calculation (1,910 ÷ 995); a comparison within one company’s table, not against other makers |
| The 2026 heavy rare earth statements respond to China’s export controls | Inference | This article’s interpretation (the company gives no reason) |
| Magnets are not the center of company-wide growth | Inference | This article’s interpretation (the growth discussion centers on semiconductors) |
| Vietnam is being built into the core of integrated production | Inference | This article’s interpretation (from the timeline) |
| Risks on concentration of uses, patent expiry and alternatives, and investment priority | Inference | This article’s interpretation |
| The four company types (materials, components, coatings, new approaches) | Our calculation | This article’s own grouping; company names are examples from this series |
Last updated 10 October 2026 / Troy Technical
Figures in this article come from Shin-Etsu Chemical’s Annual Reports, summaries of its earnings calls and its dedicated magnet website, and from an official announcement by China’s Ministry of Commerce. Magnet figures are limited to what the company has published. No research-firm estimates or press-only figures have been used. Passages marked “Inference” are this article’s interpretation of primary sources, not statements made by the company.