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Industrial-Grade High-Quality Pure Tungsten Crucibles (1).jpg
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Industrial-Grade Pure Tungsten Crucibles - W1 Model Exclusive Solution

The W1 model pure tungsten crucibles are functional container products made of high-purity tungsten raw materials through multiple processes such as isostatic pressing forming, high-temperature sintering, precision machining, and vacuum annealing. The volume range covers 1-5000ml, and the wall thickness can be customized on demand, which can meet the use requirements of different high-temperature melting, purification, and sintering scenarios. With ultra-high tungsten content of ≥99.95% as the core advantage, the product effectively eliminates impurity interference. Relying on extreme high-temperature resistance, excellent mechanical properties, and stable chemical properties, it plays an irreplaceable role in fields with strict requirements on container purity, high-temperature resistance, and reliability, such as precious metal melting, semiconductor material preparation, high-temperature experiments, and nuclear industry reactions. It is a core basic container to ensure material preparation accuracy and improve product quality.

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    Product specification

    Product Parameters
    Product Information

    Item

    Details

    Volume Range

    1ml-5000ml (standard), large crucibles with special volume (above 5000ml) can be customized

    Wall Thickness Range

    0.30mm-20.0mm (standard), special wall thickness can be customized

    Dimension Specifications

    Cylindrical: Inner Diameter 20-300mm, Height 30-500mm; Square/Special-Shaped: Dimensions customized according to customer requirements

    Tolerance Range

    Inner/Outer Diameter Tolerance: ±0.05-0.2mm (classified by precision grade), Wall Thickness Tolerance: ±0.03-0.1mm, customized according to international standard (ASTM B760) or customer requirements

    Operating Temperature

    Normal Operating Temperature: ≤2400℃, Short-Term Maximum Operating Temperature: Up to 2800℃ (under vacuum/inert gas environment)
    Product Name  Pure Tungsten Crucibles
    Brand Name  Yunjie
    Model  W1 (Exclusive Pure Tungsten Model)
    Material  Pure Tungsten, Tungsten Content ≥99.95%
    Process  Powder Metallurgy + Isostatic Pressing Forming + High-Temperature Sintering + Precision Machining + Vacuum Annealing
    Density  19.3g/cm³
    Advantages  Extreme High-Temperature Resistance (Melting Point 3410℃), Ultra-High Purity with No Impurities, High Strength and Hardness, Wear and Corrosion Resistance, Excellent Thermal Conductivity, Low Thermal Expansion Coefficient, Strong Structural Sealing, Good High-Temperature Creep Resistance
    Surface Treatment  Polished Surface, Pickled Surface, Alkaline Washed Surface
    Shape  Cylindrical Crucibles, Square Crucibles, Special-Shaped Crucibles (Customized on Demand), Covered/Uncovered Crucibles
    Processing Services  Precision Cutting, Polishing, Drilling, Welding, Special-Shaped Forming
    Minimum Order Quantity  1 piece (MOQ for customized special-shaped crucibles can be negotiated)

    Classification

    Industrial-Grade High-Quality Pure Tungsten Crucibles (1)
    • Classification by Volume
      •Small Tungsten Crucibles (1ml-100ml): Suitable for scenarios with small volume requirements, focusing on precision and purity, such as laboratory small-scale high-temperature experiments, micro-precious metal melting, and semiconductor chip material preparation.
      •Medium Tungsten Crucibles (100ml-1000ml): Applicable to scenarios that need to balance volume, strength, and high-temperature resistance, such as conventional industrial batch melting, precious metal purification, high-temperature sintering, and electronic component preparation.
      •Large Tungsten Crucibles (1000ml-5000ml and above): Suitable for scenarios with extremely high requirements for volume, load-bearing capacity, and purity stability, such as large-scale precious metal melting, advanced alloy preparation, nuclear industry reactions, and large-scale high-temperature experiments.
    • Classification by Structure and Application

    Specification Selection Table and Composition Table

    W1 Model Pure Tungsten Crucible Specification Selection Table
    Chemical Composition Table

    Volume Range

    Wall Thickness Range

    Core Characteristics

    Applicable Scenarios

    1-100ml

    0.3-3.0mm

    Ultra-high purity with no impurities, uniform heating, precise dimensions, light weight, suitable for small equipment

    Laboratory high-temperature experiments, micro-precious metal (gold, silver, platinum) melting, semiconductor chip material preparation, small sensor component sintering

    100-1000ml

    3.0-8.0mm

    Qualified purity, moderate strength, good heating uniformity, excellent sealing performance, wide adaptability

    Industrial batch precious metal purification, advanced alloy melting, electronic component high-temperature sintering, chemical high-temperature reaction vessels, new energy material preparation

    1000-5000ml

    8.0-20.0mm

    Ultra-high purity guarantee, high high-temperature strength, good creep resistance, strong load-bearing capacity, long service life

    Large-scale precious metal melting, batch preparation of advanced alloys, nuclear industry experimental vessels, large-scale high-temperature sintering equipment, aerospace material pretreatment

    Grade

    W

    Impurity Content, Max. (≤)

    Impurity Content, Max. (≤)

    Impurity Content, Max. (≤)

    Impurity Content, Max. (≤)

    Impurity Content, Max. (≤)

    Impurity Content, Max. (≤)

     

     

    Fe

    Ni

    Si

    C

    N

    Residuals

    W1

    ≥99.95

    0.01

    0.01

    0.01

    0.01

    0.01

    0.03

    Characteristics

    01
    Ultra-High Purity Guarantee
    Tungsten content ≥99.95% with extremely low impurity content, effectively avoiding impurity contamination of molten materials, suitable for high-end preparation scenarios with extremely high requirements for material purity.
    advantage-2
    02
    Extreme High-Temperature Resistance
    Melting point up to 3410℃, short-term tolerance to 2800℃ under vacuum/inert gas environment, stable long-term operating temperature below 2400℃, not easy to soften and deform, making it the preferred container for high-temperature melting.
    advantage-2
    03
    High Strength and Creep Resistance
    Hardness up to HRC35-45 at room temperature, maintaining excellent mechanical strength under high-temperature environment, good high-temperature creep resistance, capable of bearing material weight and high-temperature expansion stress, with long service life.
    advantage-2
    04
    Uniform Thermal Conductivity
    Good thermal conductivity, extremely low thermal expansion coefficient (only 1/3 of steel), excellent heating uniformity, avoiding uneven material melting caused by local overheating, ensuring preparation accuracy.
    advantage-2
    05
    Stable Chemical Properties
    Not easy to react with most metals and non-metals at room temperature and high temperature, resistant to acid and alkali corrosion (except for a few media such as hydrofluoric acid and concentrated nitric acid), suitable for complex melting environments.
    advantage-2
    06
    Good Processing Adaptability
    Can be customized through various processing methods such as precision machining, welding, and special-shaped forming. Toughness is further improved after vacuum annealing, which can meet the personalized needs of different equipment and processes.
    advantage-2
    07
    Non-Magnetic and Radiation Resistance
    No magnetic interference, suitable for electronic material and magnetic material preparation scenarios; has certain radiation resistance, and can be used for nuclear industry experiments and reaction vessels.
    advantage-2
    08
    Excellent Sealing Performance
    After precision processing and sintering treatment, the inner wall of the container is smooth, the structure is dense without pores, and the covered type has stronger sealing performance, which can reduce material volatilization and improve material utilization rate.
    advantage-2

    Production Process

    1. Raw Material Preparation: Select high-purity tungsten concentrate, prepare high-purity tungsten powder (purity ≥99.95%) through multiple purification processes such as roasting and reduction, strictly control powder particle size, fluidity and purity, laying the foundation for forming.
    2. Isostatic Pressing Forming: Put high-purity tungsten powder into a customized mold, press into crucible blanks by cold isostatic pressing process, ensure uniform blank density, complete structure, no obvious defects, and provide guarantee for post-sintering performance.
    3. High-Temperature Sintering: Put the formed blanks into a high-temperature sintering furnace, perform high-temperature sintering under hydrogen protection or vacuum environment to remove impurities and pores, realize blank densification, and improve material strength and high-temperature resistance.
    4. Vacuum Annealing: Put the sintered tungsten crucibles into a vacuum annealing furnace, perform heat preservation treatment at a specific temperature to eliminate forming and sintering internal stress, optimize grain structure, and improve material toughness, plasticity and high-temperature stability.
    Industrial-Grade High-Quality Pure Tungsten Crucibles (1)
    Industrial-Grade High-Quality Pure Tungsten Crucibles (2)

    Production Process

    1. Precision Machining: Process the inner and outer walls, ports and sealing surfaces of the crucibles through precision equipment such as CNC lathes and milling machines, precisely control dimensional tolerance and surface finish, and process covered structures or special-shaped contours on demand.
    2. Surface Treatment: Remove oxide layers and processing impurities on the crucible surface through surface treatment processes such as polishing and pickling, improve inner wall smoothness and corrosion resistance, and avoid contamination of molten materials.
    3. Finishing and Inspection: Through dimensional measurement, density detection, surface flaw detection, purity detection, sealing test and other steps, ensure that product dimensions are precise, performance meets standards, purity is qualified, and there are no internal defects, with material inspection report and quality certificate attached.

    Application Fields

    01
    Aerospace
    Used for high-temperature alloy melting of aero-engines, special material preparation of spacecraft, high-temperature treatment containers for rocket propellants, ensuring high-end material performance with high purity and high-temperature resistance.
    6511419c2763338526
    02
    Electronic Technology
    Containers for semiconductor chip materials, high-temperature sintering of electronic components, and rare metal purification. The ultra-high purity and no-impurity characteristics avoid material contamination and help improve electronic equipment performance.
    6511419c2763338526
    03
    Metallurgy and Chemical Engineering
    Melting and purification of precious metals (gold, silver, platinum, palladium), advanced alloy preparation, high-temperature chemical reaction containers, adapting to high-temperature and strong corrosion working conditions, improving product purity and quality.
    6511419c2763338526
    04
    National Defense and Military Industry
    Military special alloy melting, nuclear industry experimental containers, advanced weapons and equipment material pretreatment containers, meeting the strict military use requirements with high strength and high stability.
    6511419c2763338526
    05
    New Energy and New Materials
    High-temperature preparation of hydrogen energy storage and transportation materials, sintering of core components of solar thermal power generation equipment, high-temperature treatment of new ceramic materials, combining high-temperature resistance and chemical stability to improve material performance.
    6511419c2763338526
    06
    Scientific Research Experiments
    High-end high-temperature experiments, new material R&D, and micro-material melting containers in universities and research institutions, accurately meeting the strict requirements of experiments on purity, temperature and dimensions, and assisting scientific research progress.
    6511419c2763338526

    Send Inquiry

    As a professional tungsten container solution provider, Baoji Yunjie focuses on the R&D and supply of high-quality pure tungsten crucibles (W1 model) and a full range of metal products, pipes, rods, and plates such as titanium, zirconium, nickel, aluminum, tantalum, and cobalt. It supports customized volume, wall thickness, structure, and surface treatment on demand, and strictly controls quality throughout the process. If you have procurement needs or technical consulting for W1 model pure tungsten crucibles, please feel free to contact us, and we will work together to create new value for high-end manufacturing!