SiC Wafer Polishing Market Size & Share Analysis - Growth Trends and Forecast (2027 - 2032)

Market Trends and Insights

EV Inverter and Onboard-Charger Deployment

The SiC wafer polishing market benefits as SiC Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) become a preferred design choice for EV traction inverters using 800-volt battery systems. Their use is also extending to onboard chargers, where faster switching can support compact charging stages rated from 7 kW to 22 kW. ROHM introduced compact HSDIP20 SiC modules for onboard charger power factor correction in April 2025, reporting more than 3 times the power density of top-cooled discrete designs. BYD disclosed a 1,000 kW peak-charging platform in March 2025 that uses high-voltage SiC power chips. Tighter device geometry leaves less tolerance for subsurface damage, increasing the need for longer, more chemically active CMP steps. Onsemi reported resilient demand for SiC from Chinese and European EV customers in May 2025, despite uncertainty over US tariffs.

Renewable-Energy Power-Conversion Demand

The SiC wafer polishing market also benefits from renewable energy systems that require efficient power conversion. Large solar inverters are adopting SiC devices because they can achieve system efficiency above 99%, compared with 98% to 98.5% for silicon Insulated Gate Bipolar Transistor (IGBT) designs. Full-power wind converters also benefit from lower thermal stress, particularly in offshore installations where maintenance costs are high. A 2025 review identified wide-bandgap semiconductors as important for integrating large shares of renewable energy into electricity systems and reducing conversion losses. Grid equipment often operates continuously at high voltage, so manufacturers require very low defect densities and high-purity final polishing. This requirement supports demand for colloidal silica finishing steps and qualified CMP consumables.

Transition from 6-Inch to 8-Inch SiC Wafers

The transition from 150 mm to 200 mm SiC wafers supports the SiC wafer polishing market, as it requires new polishing lines and consumables designed for larger substrates. A 200 mm wafer provides 78% more die area than a 150 mm wafer, thereby reducing device costs and extending the use of SiC beyond premium EV platforms. Wolfspeed generated more revenue from 200 mm substrates than from 150 mm substrates, while Infineon and Bosch entered production in 2025. Onsemi is developing a EUR 1.64 billion SiC facility in the Czech Republic, supported by a EUR 450 million grant under the European Chips Act, with commercial operations planned for 2027. Larger wafers require a total thickness variation of less than 0.3 μm and a surface roughness of less than 0.1 nm Ra for epitaxial-ready production. Japan has also directed support toward SiC wafer capacity through its semiconductor infrastructure program.

Advanced Chemical Mechanical Polishing (CMP) Consumables and Surface-Quality Requirements

The SiC wafer polishing market is moving toward slurry and pad systems that increase material removal rates while limiting surface defects. These objectives can conflict because SiC CMP depends on the balance between chemical oxidation and mechanical abrasion. A 2025 study found that the C-face of 4H-SiC can be polished 3.5 times faster than the Si-face under the same slurry conditions, underscoring the importance of adaptive process control. Entegris developed a recyclable SiC CMP slurry that can return up to 80% of used slurry to production while reducing hazardous waste by more than 75%. Vibrantz introduced its abrasive-free SRS2550 SiC slurry in October 2025 and reported a 0.7-0.8 Å surface finish and up to 99% usable wafer area. China also has active standards projects for 200-mm polished monocrystalline SiC wafers and residual-stress testing.

Extreme Hardness, Brittleness, and Defectivity

The SiC wafer polishing market faces process constraints due to SiC's Mohs hardness of 9 and brittleness. Even optimized CMP slurries achieve material removal rates of only 4-7 µm/hour on the Si face. Surface defects can become dislocations in the epitaxial layer, reducing breakdown voltage and switching reliability in finished devices. This issue is more pronounced for 200 mm wafers, which carry a higher risk of edge roll and thickness variation than 150 mm wafers. A 2025 study found that ultrasonic chemical-corrosion approaches still require careful calibration to avoid creating new subsurface damage. These yield constraints limit the rate at which new polishing capacity converts into usable wafer supply.

Long Cycle Times and Low Material-Removal Rates

The SiC wafer polishing market is constrained by preparation cycles that are significantly longer than comparable silicon processes. Coarse grinding, fine grinding, mechanical polishing, and CMP can each require several hours per batch. Longer cycles raise capital requirements and increase the risk of breakage during large-diameter processing. Engis reported that its HYPREZ Grind-to-CMP system reduced CMP planarization time by 66% for 150 mm to 165 mm wafers^[1]. However, fabs still need to requalify the full process before adoption. These throughput limitations can reduce the expected cost advantage of 200 mm wafers in applications that are more sensitive to device cost.

*Our forecasts treat driver/restraint impacts as directional, not additive. The impact forecasts reflect baseline growth, mix effects, and variable interactions.

SiC Wafer Polishing Market Segment Analysis

Polishing pads held 60.21% of the SiC wafer polishing market share in 2026 and are forecast to grow at a 38.93% CAGR through 2032. This reflects higher CMP step counts and rising pad consumption as wafer geometry requirements become more stringent. Pads play a central role in CMP because their pore structure, groove pattern, and hardness influence surface condition alongside slurry chemistry. The SiC wafer polishing market favors pad suppliers that can deliver stable performance across a range of wafer sizes. Fujibo Holdings held an estimated 80% global share of CMP soft pads, a category used in final SiC polishing.

Fujibo announced an investment of JPY 8.7 billion (~USD 0.05 billion) at its Mibu-gawa factory in November 2025 to raise CMP soft-pad production by 60% by late fiscal 2028. The company is also building a JPY 6.5 billion research center in Taiwan, with an operational target in the first half of fiscal 2027, to work with Asian fabs on pad-and-slurry combinations. Abrasive powders remain important for initial grinding and lapping, where larger wafers require substantial material removal. Diamond slurries are used for intermediate mechanical polishing, while colloidal silica suspensions are used for final finishing. Colloidal silica is gaining relevance as surface roughness requirements move below 0.1 nm Ra.

Chemical-mechanical polishing held 55.17% of revenue in 2026 and is forecast to grow at a 40.17% CAGR through 2032. CMP combines chemical oxidation with abrasive removal and is the established route to sub-nanometer roughness without creating fresh subsurface damage. This capability is important for both Si and C faces of SiC substrates. The SiC wafer polishing market size for CMP benefits from requirements for epitaxial-ready surfaces in automotive, industrial, and energy devices. Semiconductor Equipment and Materials International (SEMI) identified gaps in real-time CMP metrology in its August 2025 auxiliary report.

Mechanical polishing remains important for removing surface damage from sawing and grinding. Pureon AG introduced processes that combine IRINO-PROSiC composite pads and diamond suspensions to achieve a total thickness variation of below 1 µm on 150 mm SiC wafers without intermediate pad conditioning. Electropolishing and plasma-assisted polishing remain smaller methods used mainly for research applications or specific polytypes. Recent work on UV-cured pads and catalytic composite abrasives reflects continuing interest in stress-free finishing approaches. Chemical polishing is also advancing as fabs test abrasive-free final-polishing methods intended to reduce scratch defects.

Power electronics accounted for 70.34% of revenue in 2026 and is projected to grow at a 42.61% CAGR through 2032. EV inverters, onboard chargers, industrial motor drives, and renewable-energy converters are shifting from silicon toward SiC devices. Automotive qualification requirements are particularly demanding because wafer makers must meet specific surface and defect standards. This gives qualified consumable suppliers a more durable position in the supply chain. The SiC wafer polishing market is also benefiting from demand for data-center uninterruptible power supplies that use high-efficiency SiC power devices.

LED applications retain a material but declining role because gallium nitride (GaN)-on-silicon is reducing the use of SiC substrates in LED production. This shift raises the average surface-quality requirement, as power-device substrates need tighter finishing specifications. Sensors, detectors, and RF devices remain smaller applications with distinct material needs. RF devices use semi-insulating SiC substrates and may require CMP chemistries that differ from those used for conductive power-device substrates.

Geography Analysis

Asia-Pacific

Asia-Pacific held 40.38% of the SiC wafer polishing market share in 2026 and is forecast to grow at a 40.04% CAGR through 2032. China supports regional demand through investment in SiC manufacturing, large-scale EV deployment, and renewable energy expansion. The YOFC SiC wafer facility in Wuhan began production in 2025 with an annual capacity of 360,000 wafers, sufficient to supply chips for 1.44 million new-energy vehicles^[2]. China's 2025 tax policy notice includes polishing pads and slurries among the materials eligible for preferential treatment. Japan contributes through Fujibo, Fujimi, and JSR, while South Korea and Taiwan are working to qualify 200 mm SiC processes and strengthen co-development opportunities for materials suppliers.

North America

North America is a major market for SiC wafer polishing, encompassing wafer suppliers, device makers, and consumable developers. Wolfspeed's shift toward 200 mm substrate revenue supports recurring demand for qualified CMP products, while Entegris supplies Epic Power CMP pads and slurry-recycling systems for high-capacity fabs. US chip incentives support new wafer capacity requiring larger-format polishing tools and consumables, while Engis offers Grind-to-CMP solutions for 150 mm and 200 mm wafers. Compliance factors include OSHA requirements and EPA semiconductor air-emissions rules for slurry handling and waste treatment. EPA and OSHA renewed cooperation on chemical safety in January 2025, reinforcing chemical management standards across manufacturing sites.

Europe, Southeast Asia, and Emerging Regions

Europe is expanding its role in SiC power-device production through Onsemi's planned integrated facility in the Czech Republic. The facility is expected to begin commercial operations in 2027 and will cover stages from crystal growth to finished devices. Infineon is transitioning its Kulim, Malaysia site from 150 mm to 200 mm wafer production, creating demand in Southeast Asia. The European Union's Critical Raw Materials Act supports upstream supply chains, while Brazil, Saudi Arabia, and India are increasing their focus on SiC power electronics through initiatives in renewable energy and semiconductors.