High-Temperature Duty
High-Temperature Ceramic Crucibles
Developed for thermal-processing applications where structural stability and resistance to repeated heating are essential.
View Product →Advanced Ceramic Components
Ceramic Crucibles
Precision ceramic crucibles for melting, calcination, evaporation, heat treatment and laboratory processing. Crucible performance depends on material compatibility, thermal cycling, wall design, base geometry and the way the vessel is heated, supported and cooled.
Custom Diameter / Height / Capacity
High-Temperature Stability
Chemical Compatibility
Drawing-Based Manufacturing
Selection by Process Duty
Choose the Crucible Around Temperature, Media and Heating Cycle
A crucible for routine laboratory heating is selected differently from one used for molten materials, repeated thermal cycling or controlled evaporation. Start with the process conditions.
Duty 01
Melting & Holding
For processes where the crucible contains molten or softened material and must resist chemical attack and thermal stress.
Duty 02
Calcination & Heat Treatment
For powder, mineral and sample processing where stable shape and clean containment are important during heating.
Duty 03
Evaporation & Vacuum Processing
For controlled heating environments where purity, thermal behavior and compatibility with the processed material matter.
Duty 04
Laboratory & Analytical Use
For repeated sample preparation and testing where dimensional consistency and material cleanliness support reliable results.
Product Range
Ceramic Crucible Solutions
UNIPRETEC supplies ceramic crucibles for laboratory, thermal-processing and custom industrial applications with geometry and material matched to the actual process environment.
Chemical Service
Chemical-Resistant Ceramic Crucibles
Used for process media requiring stable ceramic containment and careful material compatibility at elevated temperatures.
View Product →Laboratory Use
Laboratory Ceramic Crucibles
Suitable for sample heating, calcination and analytical workflows requiring repeatable geometry and clean handling.
View Product →Evaporation Duty
Evaporation Ceramic Crucibles
Designed for controlled heating applications where thermal response, material purity and stable containment matter.
View Product →Covered Process
Lidded Ceramic Crucibles
Used where a cover helps control contamination, heat retention, material loss or process atmosphere during heating.
View Product →Custom OEM
Custom Ceramic Crucibles
Manufactured to drawing with custom capacity, wall thickness, rim, base and process-specific geometry for specialized equipment.
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Process Logic
For Crucibles, Material Compatibility Comes Before Maximum Temperature
A crucible may tolerate a high furnace temperature yet still perform poorly if the process material reacts with the ceramic, wets the surface or creates damaging thermal gradients.
Process Material
The melt, powder or sample must be compatible with the ceramic under the real process temperature and atmosphere.
Heating Method
Direct flame, furnace, induction-assisted systems and localized heating create different thermal gradients and stress conditions.
Thermal Cycling
Repeated heat-up and cool-down cycles may be more demanding than a single maximum-temperature exposure.
Support Condition
How the crucible is supported at the base or rim influences stress distribution during heating and loading.
Crucible Geometry
Define Capacity, Wall Thickness, Rim and Base as One Thermal System
Crucible geometry affects thermal response, usable volume, strength and process handling. The wall, base and rim should be specified together rather than as isolated dimensions.
Outer Diameter
Inner Diameter
Overall Height
Usable Capacity
Wall Thickness
Base Thickness
Rim / Lip Geometry
Lid / Cover Fit
Material Direction
Choose the Ceramic Around Process Chemistry and Thermal Behavior
Crucible material should be selected according to what is processed, how it is heated and how often the vessel cycles between hot and cold conditions.
Alumina
A common option for laboratory and industrial thermal processing where high-temperature stability and chemical resistance are required.
Zirconia
Useful where higher toughness or specific thermal and chemical behavior is needed in more demanding applications.
Boron Nitride
Relevant for selected high-temperature applications where machinability and material-specific non-wetting behavior are useful.
Application-Specific Ceramics
Alternative ceramic materials may be selected where purity, atmosphere, melt compatibility or thermal-shock performance drives the design.
Failure Prevention
Three Crucible Risks Worth Reviewing Before Production
Crucible reliability is often controlled by thermal gradients, process chemistry and handling conditions rather than by room-temperature strength alone.
Thermal Shock
Rapid heating or cooling can create large temperature gradients between the wall, base and rim. Heating and cooling rates should reflect the material and geometry.
Chemical Attack or Wetting
A process material may react with, penetrate or wet the crucible surface at temperature. Compatibility should be reviewed using real media and process conditions.
Uneven Mechanical Support
Point support, hard clamping or poor base contact can concentrate stress during heating. The fixture and support condition should be considered with the crucible design.
Applications
Typical Ceramic Crucible Applications
Ceramic crucibles are used where clean containment, chemical stability and reliable behavior at elevated temperature directly affect process results.
Laboratory Sample Preparation
Crucibles used for heating, ashing, calcination and analytical preparation under controlled laboratory conditions.
Melting & Holding Processes
Containers used to hold molten or softened materials where thermal stability and process compatibility are essential.
Powder Calcination
Crucibles used for controlled heating of powders, minerals or compounds during thermal treatment and conversion processes.
Evaporation & Vacuum Processes
Specialized crucibles used in controlled heating environments where purity and stable geometry are important.
High-Temperature Material Testing
Crucibles used to contain specimens or process media during elevated-temperature evaluation and development work.
Custom OEM Thermal Equipment
Drawing-based crucibles with specific dimensions, lids, lips, supports or capacity requirements for specialized equipment.
Quality & Inspection
Inspect the Geometry That Controls Capacity, Support and Thermal Reliability
For ceramic crucibles, inspection should focus on the dimensions and surfaces that affect usable volume, stable support, lid fit and handling during high-temperature processing.
Diameter / height inspection
Wall / base thickness checks
Rim / lip geometry inspection
Lid / cover fit verification
Surface / visual integrity checks
Custom inspection reports by agreement
Custom Manufacturing
For Crucible Projects, Share the Process Material and Heating Cycle
Dimensions alone do not define a crucible application. Process chemistry, operating temperature, heating method, thermal cycle and support condition are all important during engineering review.
FAQ
Ceramic Crucible Purchasing Questions
How should I choose a ceramic crucible material?
Material selection should consider the processed material, operating temperature, furnace atmosphere, thermal cycle, contamination tolerance and required service life.
Can ceramic crucibles be manufactured to custom dimensions?
Yes, custom diameters, heights, wall thicknesses, bases, lips and lid interfaces can be evaluated according to the selected material and manufacturing route.
Are ceramic crucibles suitable for repeated heating and cooling?
They can be, but thermal-cycling performance depends on material, geometry, wall thickness, heating rate and cooling method. Rapid temperature changes should be reviewed carefully.
Can a ceramic crucible include a lid or cover?
Yes, lid and cover solutions can be evaluated where process control, contamination protection, heat retention or material loss are concerns.
What information is required for a ceramic crucible quotation?
Provide the dimensions, required capacity, process material, operating temperature, atmosphere, thermal cycle, lid or support requirements and expected quantity.
Need a Ceramic Crucible for Your Process?
Send your dimensions, process material and heating conditions for engineering review.