Artificial intelligence is reshaping the semiconductor industry far beyond the design of GPUs and accelerators.
As AI data centers expand, demand is rising for advanced logic chips, High Bandwidth Memory (HBM), DDR5 and high-capacity storage. This growth is now translating directly into new semiconductor fabs, additional 300mm wafer capacity and higher investment in advanced manufacturing equipment.
For the semiconductor materials and equipment supply chain, the impact extends well beyond wafer fabrication equipment itself.
A larger installed base of furnaces, deposition systems, thermal-processing tools and process chambers also increases demand for the precision components used inside these systems.
Among them, high-purity fused quartz process components remain important for many semiconductor manufacturing environments because of their high-temperature resistance, low thermal expansion, chemical stability and suitability for clean processing.
As AI and HBM investment accelerates, demand is growing not only for more semiconductor quartz components, but also for tighter purity control, more precise machining and increasingly customized designs.
AI Is Driving a New Semiconductor Manufacturing Investment Cycle
The scale of semiconductor manufacturing investment has increased sharply during 2026.
According to SEMI’s Q3 2026 300mm Fab Outlook, global front-end equipment spending for 300mm fabs is projected to reach a record US$149 billion in 2026, representing approximately 31% year-over-year growth. SEMI expects spending to continue growing through 2029, when it could reach approximately US$227 billion.
The trend is being driven by several markets, but AI and high-performance computing are among the most important.
SEMI also reported that worldwide semiconductor manufacturing equipment billings reached US$40.53 billion in the second quarter of 2026, an increase of 23% from a year earlier and 11% from the previous quarter. The organization linked the record results to continued investment in manufacturing capacity supporting AI infrastructure.
This expansion is increasingly visible in physical manufacturing capacity.
SEMI expects 20 new 300mm fabs or production lines to begin construction worldwide in 2026, excluding pure R&D facilities, while 13 new fabs or lines are expected to begin operations or ship first silicon during the year.
For process-component suppliers, this creates a much larger installed equipment base that will require components during initial installation, qualification, routine production and long-term maintenance.
HBM Has Become One of the Strongest Drivers of Memory Investment
One of the most significant changes in the current semiconductor cycle is the rapid growth of High Bandwidth Memory.
HBM is designed to provide extremely high memory bandwidth by vertically stacking multiple DRAM dies and connecting them through advanced interconnect structures.
This architecture is especially important for AI accelerators because modern AI workloads require huge volumes of data to move rapidly between memory and processing units.
As AI models increase in scale and complexity, memory bandwidth has become one of the key constraints on overall system performance.
That is pushing semiconductor manufacturers to invest heavily in both HBM production and the advanced DRAM capacity required to support it.
In June 2026, SEMI projected that global 300mm fab equipment investment in the memory sector would exceed US$50 billion for the first time, rising 29% to approximately US$52 billion. DRAM equipment spending alone was projected to reach approximately US$37 billion, supported by strong demand for HBM and DDR5.
SEMI’s latest Q3 outlook subsequently raised the broader 300mm investment forecast and projects memory equipment spending to grow approximately 32% in 2026, driven largely by AI-related memory demand.
The numbers indicate that HBM is no longer simply a high-value niche product.
It is becoming a major factor influencing how memory companies allocate manufacturing capacity and equipment investment.
HBM4 Has Already Entered the Production Stage
The transition to a new generation of HBM is also progressing quickly.
SK hynix reported in July 2026 that it had begun mass shipments of HBM4 during the second quarter and planned to increase production during the second half of the year. The company also said that next-generation HBM4E samples had already been delivered to customers.
Micron has similarly reported that HBM4 is in high-volume shipments for a lead customer’s platform, while development of HBM4E is progressing toward volume production in 2027.
This transition matters for the wider semiconductor supply chain.
More HBM production requires more advanced DRAM wafer fabrication, additional equipment capacity and continued technology migration.
That means growth in HBM indirectly increases demand for the process tools and supporting components used throughout semiconductor front-end manufacturing.
Why HBM Growth Matters to Quartz Component Suppliers
HBM itself does not directly create demand for quartz furnace tubes or quartz wafer boats.
The connection occurs further upstream.
The basic relationship can be summarized as:
AI Infrastructure Growth
→ Higher Demand for HBM and Advanced DRAM
→ More Memory Fab Investment
→ More Semiconductor Process Equipment
→ Larger Installed Base of Process Components
As memory manufacturers add wafer capacity, expand advanced DRAM processes and install additional manufacturing tools, the demand base for semiconductor process components also expands.
Many of these components operate in demanding environments involving:
- High temperatures
- Thermal cycling
- Reactive process gases
- Vacuum
- Chemical cleaning
- Strict particle limits
- Contamination-sensitive processes
High-purity fused quartz is widely used in these environments because it combines high thermal stability with good chemical resistance and relatively low contamination potential when suitable material grades and manufacturing controls are applied.
Quartz Furnace and Diffusion Tubes
One of the most established semiconductor applications for fused quartz is the quartz furnace tube.
These large process tubes may be used in applications including:
- Oxidation
- Diffusion
- Annealing
- Thermal processing
- Selected deposition processes
- Semiconductor research furnaces
For semiconductor equipment, a quartz tube usually needs to meet much more specific requirements than a conventional industrial glass tube.
Important specifications may include:
Outer Diameter and Inner Diameter
OD and ID must match furnace dimensions, heaters, seals and internal wafer-handling systems.
Wall Thickness
Controlled wall thickness is important for mechanical strength and thermal behavior.
Straightness
Long furnace tubes require dimensional stability across their entire length.
Roundness and Concentricity
These parameters can influence compatibility with surrounding equipment.
End Geometry
Open ends, closed ends, reduced sections and custom transitions may all be required.
Flanges and Ports
Gas inlets, exhaust connections, observation ports and other structures may be integrated through quartz fabrication and welding.
As semiconductor fabs add more furnace systems, both initial equipment demand and replacement demand for these components can increase.
Quartz Wafer Boats and Carriers
Quartz wafer boats and carriers are another important category.
During high-temperature wafer processing, wafers need to remain precisely spaced and securely positioned.
For 300mm manufacturing, key requirements may include:
- Wafer slot width
- Slot spacing
- Number of wafer positions
- Overall dimensions
- Straightness
- Surface condition
- Material purity
- Dimensional repeatability
Small geometric variations may influence wafer positioning and equipment compatibility.
This means modern quartz wafer boats increasingly need to be treated as precision process components rather than simple glass structures.
Quartz Rings, Liners and Chamber Components
Many semiconductor systems use quartz components that are smaller and more customized than furnace tubes.
These can include:
- Quartz rings
- Quartz liners
- Quartz sleeves
- Quartz shields
- Quartz plates
- Quartz discs
- Quartz windows
- Quartz flanges
- Quartz chambers
- Quartz injectors
- Gas-distribution components
- Precision-drilled quartz parts
These components are often produced according to customer drawings rather than standard catalogue dimensions.
A quartz ring may require tight control of thickness and concentricity.
A quartz plate may require multiple precision holes.
A liner may need carefully controlled ID, OD and wall thickness.
A chamber component may combine machining, forming and quartz welding.
As semiconductor equipment becomes more specialized, custom quartz fabrication is becoming increasingly important.
Semiconductor Quartz Requirements Are Becoming More Demanding
Growth in semiconductor manufacturing does not simply mean that customers need more quartz.
It also means they are asking for better-controlled components.
Several technical areas are becoming increasingly important.
Material Purity
Trace contamination can be critical in semiconductor manufacturing.
Depending on the application, customers may pay attention to elements such as:
- Aluminum
- Iron
- Sodium
- Potassium
- Lithium
- Calcium
- Titanium
Different applications require different purity levels.
A quartz observation window, for example, may have different material requirements from a diffusion furnace component.
The quartz grade should therefore be selected according to the actual processing environment.
OH Content
Hydroxyl content can influence thermal and optical characteristics and may be specified for certain semiconductor or optical applications.
Surface Condition
A component manufactured from high-purity material can still create problems if machining produces chips, cracks, particles or significant surface damage.
Requirements may include:
- Ground surfaces
- Mechanically polished surfaces
- Optical polishing
- Flame polishing
- Controlled surface roughness
Dimensional Tolerance
Advanced semiconductor equipment often uses quartz parts that interface directly with other precision components.
Critical parameters may include:
- OD and ID
- Thickness
- Flatness
- Parallelism
- Perpendicularity
- Concentricity
- Straightness
- Hole diameter
- Hole position
Cleaning
Fabrication can introduce particles, residues and contamination.
For semiconductor applications, post-machining cleaning and appropriate packaging are therefore especially important.
Precision Quartz Fabrication Is Becoming More Valuable
Historically, quartz suppliers could serve many markets primarily through tube forming, plate cutting and basic glasswork.
Modern semiconductor equipment increasingly requires more advanced capabilities.
These may include:
Precision Cutting
Quartz tubes, plates and blanks must be cut accurately while controlling edge damage.
Grinding
Grinding is used to control thickness, diameter, flatness and geometry.
CNC Machining
Complex profiles, pockets, holes, grooves and special structures can require precision machining.
Drilling
Many equipment components require multiple holes with carefully controlled diameter and location.
Polishing
Some quartz components require smooth process-facing surfaces or optical-grade finishing.
Quartz Welding
Flanges, nozzles, ports and tubes may need to be assembled into more complex structures.
Cleaning and Inspection
Finished components may require controlled cleaning followed by dimensional and visual inspection.
This shift means fused quartz is increasingly being treated as a precision engineering material within semiconductor equipment.
AI Is Also Increasing Demand for Custom Components
The AI semiconductor cycle is not only expanding mature production capacity.
It is also accelerating process development.
New generations of logic and memory require equipment suppliers to test new chamber designs, thermal processes, gas-delivery systems and wafer-handling concepts.
During this development stage, standard quartz products may not always fit the equipment.
Engineers may need:
- One prototype quartz tube
- Five custom rings
- A new quartz chamber
- A modified flange
- A plate with an experimental hole pattern
- A custom wafer carrier
- A specialized quartz liner
Volumes may initially be small.
However, if the design is successfully qualified and enters production, the same component can become a repeat-order product.
For suppliers, the ability to support:
Prototype → Testing → Design Revision → Qualification → Production
is therefore becoming increasingly important.
More Fabs Mean More Long-Term Replacement Demand
Another important factor is component lifetime.
Semiconductor quartz parts are exposed to demanding operating conditions.
Over time, components may require replacement because of:
- Surface contamination
- Devitrification
- Repeated thermal cycling
- Mechanical damage
- Process deposits
- Cleaning cycles
- Particle-control requirements
- Preventive maintenance schedules
Therefore, a new fab can generate process-component demand for many years after construction.
The relationship is not simply:
New Fab → One Quartz Component Order
It is closer to:
New Fab
→ Equipment Installation
→ Qualification
→ High-Volume Manufacturing
→ Maintenance
→ Component Replacement
→ Equipment Upgrade
The rapid growth in 300mm capacity therefore creates a larger long-term installed base for semiconductor quartz suppliers.
300mm Capacity Continues to Expand
According to SEMI’s latest outlook, installed global 300mm production capacity is projected to increase approximately 7% in 2026 and then grow around 8% annually from 2027 through 2029.
This growth includes investment in advanced logic, memory and other semiconductor technologies.
The scale of the expansion matters because each additional production line adds process tools and supporting infrastructure.
For high-purity quartz manufacturers, the most attractive opportunities may therefore come from specialized components where customers need a combination of:
- High material purity
- Precise dimensions
- Small-batch customization
- Stable repeat production
- Controlled surface quality
- Reliable technical communication
What Semiconductor Customers Should Specify When Ordering Quartz Components
For custom semiconductor quartz projects, clear technical information can significantly reduce development time.
Useful specifications include:
Material Grade
Specify natural fused quartz, synthetic fused silica or another required material grade where applicable.
Dimensions
Provide OD, ID, length, width, thickness and other critical measurements.
Tolerances
Clearly identify critical equipment-interface dimensions.
Surface Requirement
Indicate whether surfaces should be ground, polished, flame-polished or produced to another specified condition.
Hole Information
For drilled parts, provide hole diameter, position, spacing and quantity.
Flatness and Straightness
Specify these where installation or process performance depends on geometry.
Operating Conditions
Provide information about operating temperature and process environment where relevant.
Quantity
Indicate whether the requirement is for a prototype, test batch or production quantity.
Drawings or Samples
2D drawings, STEP files or physical samples can greatly improve manufacturing evaluation.
High-Purity Quartz Components for Semiconductor Equipment
High-purity fused quartz continues to support many areas of semiconductor equipment manufacturing.
Typical product categories include:
- Semiconductor quartz tubes
- Quartz furnace tubes
- Quartz diffusion tubes
- Quartz wafer boats
- Quartz carriers
- Quartz rings
- Quartz liners
- Quartz plates
- Quartz discs
- Quartz windows
- Quartz flanges
- Quartz sleeves
- Precision-drilled quartz components
- CNC-machined quartz parts
- Welded quartz assemblies
For custom projects, components can be developed according to customer drawings, samples or equipment specifications.
The most suitable quartz grade and fabrication process should be selected based on dimensions, operating temperature, process environment, tolerance and surface requirements.
Outlook: AI Is Turning Memory Growth Into Fab Growth
The semiconductor industry’s AI cycle is moving from chip demand into manufacturing infrastructure.
HBM4 is entering volume production.
Advanced DRAM investment is increasing.
New 300mm fabs are entering construction and production.
Global semiconductor equipment spending is reaching record levels.
For quartz suppliers, the implication is not simply that semiconductor manufacturers will purchase more glass products.
The opportunity is more specialized.
Advanced semiconductor manufacturing increasingly needs quartz components that combine:
**High Purity
- Precision Geometry
- Clean Surfaces
- Custom Fabrication
- Small-Batch Prototype Capability
- Stable Repeat Production**
AI and HBM are therefore contributing to a broader transformation of the semiconductor process-component supply chain.
As new fabs come online and memory manufacturers continue upgrading production technologies, high-purity fused quartz is likely to remain an important supporting material for thermal processing, wafer handling and other semiconductor equipment applications.
The next phase of semiconductor growth will require not only more process components—but more precisely engineered ones.
