Tungsten Crucible in Vacuum Heat Treatment
Tungsten crucible in vacuum heat treatment refers to a high-temperature container used in vacuum annealing, stress relief treatment, diffusion processing, and specialized material heat treatment processes. Under high-temperature vacuum or inert atmosphere, the tungsten crucible helps establish a uniform thermal field, improving microstructural stability and temperature consistency during heat treatment.
CTIA’s tungsten crucible uses high-purity tungsten with purity of W ≥ 99.95% and is manufactured through a powder metallurgy route including high-temperature sintering, densification processing, rotary swaging, and precision machining, providing reliable performance for vacuum heat treatment applications from 1500°C to 2400°C.
Why use tungsten crucible for vacuum heat treatment? Vacuum heat treatment processes typically operate under high temperature, low pressure, and long holding time conditions, requiring excellent high-temperature stability, low outgassing behavior, and uniform thermal field performance from the crucible material. Compared with conventional metals or graphite materials, tungsten crucibles offer a higher melting point, lower vapor pressure, and superior structural stability at elevated temperatures, effectively reducing deformation and impurity release, thereby improving process cleanliness and consistency.
CTIA’s tungsten crucible has the following features:
（1）High-Temperature Structural Stability: Maintains stable structure during long-term high-temperature holding with minimal deformation.
（2）Low Vapor Pressure: Reduces outgassing and secondary contamination in high-temperature vacuum environments.
（3）Dimensional Stability: Minimal dimensional variation during thermal cycling supports precise process control.
（4）Thermal Field Uniformity: Stable thermal conductivity and radiation characteristics promote uniform temperature distribution.
（5）Thermal Shock Resistance: Adapts to frequent heating and cooling cycles as well as intermittent operating conditions.
（6）Vacuum Compatibility: Maintains stable performance under high vacuum and inert atmosphere.
Specifications of CTIA’s tungsten crucible:
（1）Purity: W ≥ 99.95%
（2）Density: 17.8–18.5 g/cm³
（3）Outer Diameter: 20–500 mm
（4）Height: 30–600 mm
（5）Wall Thickness: 2–30 mm
(6) Application-Specific Design: CTIA GROUP delivers customized structural solutions optimized for your unique thermal environments and load-bearing conditions.
Tungsten crucibles are widely used in high-temperature alloy heat treatment, powder metallurgy sintering, refractory metal annealing, and functional material processing, especially in applications requiring high purity and microstructural stability.
CTIA GROUP has specialized in tungsten crucible manufacturing for over 30 years. Based on vacuum heat treatment furnace structure and thermal field distribution requirements, CTIA provides optimized designs for structural stability, wall thickness, and thermal matching performance, delivering integrated solutions from material preparation to precision machining.
For any inquiry, please contact tungsten crucible manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: www.tungsten.com.cn
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