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Pure Tantalum Crucibles R05200 (American Standard) - Specialized for High-Temperature, Corrosion-Resistant Scientific & Industrial Applications

R05200 pure tantalum crucibles are hollow cylindrical tantalum-based containers manufactured from high-purity commercially pure tantalum through multiple core precision processes, including vacuum melting, forging & rolling, precision forming, annealing treatment, and surface finishing. The R05200 grade features a tantalum content of ≥ 99.95% with extremely low impurity levels and no harmful impurity precipitation, making it suitable for scenarios with strict requirements on material purity, high-temperature stability, and corrosion resistance. As a core category of high-end high-temperature containers, pure tantalum crucibles inherit the exceptional properties of tantalum materials, exhibiting strong tolerance to most strong acids, alkalis, molten salts, high-temperature metal liquids, and corrosive gases except hydrofluoric acid. They operate stably for a long time under harsh working conditions without contaminating the molten medium. With a melting point of up to 2996℃, they can serve continuously below 1400℃ and withstand high temperatures of 1800℃ for a short time, maintaining excellent mechanical properties and structural integrity in high-temperature environments without the risk of deformation or cracking. Meanwhile, they possess characteristics such as clean and smooth inner walls free of impurities, high-temperature erosion resistance, good sealing performance, and easy processing & forming. Widely used in high-end fields such as laboratory research, electronic industry, aerospace, and new material preparation, they are core containers for special material melting, purification, reaction, and sample processing.

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    Product specification

    Product Parameters
    Product Information

    Item

    Regular Parameter Details (Pure Tantalum Crucibles)

    Custom Parameter Range

    Outer Diameter

    Small crucibles: 20mm—50mm; Medium crucibles: 50mm—150mm; Large crucibles: 150mm—300mm

    Outer diameter 20mm—500mm and above; customizable special-shaped structures such as cylindrical, square, and conical

    Wall Thickness

    Small crucibles: 0.2mm—1.0mm; Medium crucibles: 1.0mm—2.0mm; Large crucibles: 2.0mm—5mm

    Wall thickness 5mm and above; customizable uniform wall thickness and bottom-thickened structures

    Height

    Small crucibles: 10mm—80mm; Medium crucibles: 80mm—200mm; Large crucibles: 200mm—400mm

    Height 10mm—800mm and above; aspect ratio and opening size customizable on demand

    Tolerance Range

    Outer diameter tolerance: ±0.05mm—±0.3mm; Wall thickness tolerance: ±0.03mm—±0.2mm (complying with ASTM B708 American Standard)

    Tolerance customizable according to precision requirements; micron-level precision control achievable for small crucibles

    Surface Roughness

    Polished surface: Ra≤0.5μm; Bright annealed surface: Ra≤0.8μm

    Inner and outer wall roughness customizable on demand
    Product Name  Pure Tantalum Crucibles
    Brand Name  Yunjie (Yunjie)
    Model  R05200 (American Standard)
    Material  High-purity tantalum (commercially pure tantalum, complying with American Standard R05200 grade)
    Manufacturing Process  Vacuum melting, forging, rolling, precision stamping, spinning forming, annealing, surface treatment, seamless welding (for large/special-shaped products)
    Minimum Tantalum Content  Meeting American Standard R05200 high-purity grade requirements (Ta content ≥ 99.95%)
    Density  16.6g/cm³
    Advantages  Extreme corrosion resistance, excellent high-temperature stability, ultra-pure impurity-free material, high-temperature erosion resistance, superior inner wall finish, strong sealing performance, high structural strength
    Surface Conditions  Pickled surface, bright annealed surface, polished surface
    Delivery Conditions  Soft state (M), hard state (Y)
    Processing Services  Dimension customization (outer diameter, inner diameter, height, wall thickness), special-shaped structure customization, bottom arc processing, matching lid configuration, welding reinforcement
    Minimum Order Quantity  1 piece (calculated based on actual specifications; preferential policies available for bulk purchases; small crucibles can be ordered in sets)

    Classification

    Tantalum Crucibles (1)
    • Classification by Size Specification
      •Small Pure Tantalum Crucibles: Outer diameter 20mm—50mm, height 10mm—80mm, wall thickness 0.2mm—1.0mm. Compact, lightweight, and high-precision, suitable for laboratory scenarios such as micro-sample melting, trace analysis, and small-scale reaction experiments.
      •Medium Pure Tantalum Crucibles: Outer diameter 50mm—150mm, height 80mm—200mm, wall thickness 1.0mm—2.0mm. With stable structure and moderate capacity, they are suitable for conventional scientific research experiments, purification of electronic component materials, and small-batch new material preparation.
      •Large Pure Tantalum Crucibles: Outer diameter 150mm—300mm, height 200mm—400mm, wall thickness 2.0mm—5.0mm. High-strength and resistant to high-temperature erosion, they are applicable to industrial-grade new material melting, large-scale sample processing, and high-temperature reaction containers. •Special-Shaped Pure Tantalum Crucibles: Customizable into square, conical, funnel-shaped, integrated with lid, and other structures according to customer needs. Suitable for special experimental devices, customized production equipment, such as aerospace special material preparation and dedicated reaction containers.
    • Classification by Processing State
    • Classification by Surface Treatment Method

    Specification Selection Table and Composition Table

    Pure Tantalum Plates & Sheets Specification Selection Table
    Chemical Composition Table

    Product Type

    Specification Range

    Core Features

    Applicable Scenarios

    Laboratory-Grade Precision Pure Tantalum Crucibles

    Outer diameter 20mm—50mm, height 30mm—80mm, wall thickness 0.1mm—1.0mm

    Ultra-pure material (Ta≥99.95%), minimal dimensional tolerance, impurity-free inner wall, high cleanliness, easy to clean

    University scientific research experiments, micro-sample melting, trace analysis, ultra-high purity material preparation, laboratory reaction containers

    Industrial-Grade General-Purpose Pure Tantalum Crucibles

    Outer diameter 50mm—150mm, height 80mm—200mm, wall thickness 1.0mm—2.0mm, bright annealed surface

    High dimensional accuracy, stable structure, excellent corrosion resistance, high-temperature erosion resistance, available in bulk supply

    Purification of electronic component materials, conventional new material preparation, industrial-grade sample processing, high-temperature reaction containers

    Industrial-Grade Heavy-Duty Pure Tantalum Crucibles

    Outer diameter 150mm—300mm, height 200mm—400mm, wall thickness 2.0mm—5.0mm, bottom-thickened design

    High strength, high toughness, strong high-temperature stability, impact resistance, long service life

    Large-scale new material melting, industrial-grade high-temperature purification, aerospace special material preparation, large-scale reaction devices

    Customized Pure Tantalum Crucibles

    Customized according to customer drawings (dimension, shape, wall thickness, surface treatment, matching structure)

    Strong adaptability, performance optimized on demand, high degree of personalization, precise matching with equipment and process requirements

    Special experimental device matching, customized production equipment, aerospace dedicated, special-shaped structure reaction containers

    Grade

    Impurity Content, Max. (≤)

    Ta

    Fe

    Si

    Ni

    C

    N

    O

    H

    Nb

    R05200

    ≥99.95

    0.01

    0.005

    0.01

    0.01

    0.01

    0.015

    0.0015

    0.1

    W

    Mo

    Ti

    　

    　

    　

    　

    　

    0.05

    0.02

    0.01

    　

    　

    　

    　

    　

    Characteristics

    01
    Extreme Corrosion Resistance
    Exhibits strong stability in harsh environments such as strong acids (except hydrofluoric acid), alkalis, molten salts, high-temperature metal liquids, and corrosive gases. A dense oxide film forms on the inner and outer walls, effectively resisting corrosion without contaminating the molten medium, ensuring material purity.
    advantage-2
    02
    Excellent High-Temperature Stability
    Pure tantalum has a melting point of up to 2996℃, enabling long-term stable operation below 1400℃ and short-term resistance to 1800℃ high temperature. No deformation, cracking, or softening occurs at high temperatures, maintaining excellent structural strength and mechanical properties, suitable for extreme high-temperature working conditions.
    advantage-2
    03
    Ultra-Pure Impurity-Free Material
    The R05200 grade has a tantalum content of ≥ 99.95% with extremely low impurity levels, no harmful impurity precipitation, and no chemical reaction with molten materials. It ensures material purity and the accuracy of experimental/production data, suitable for high-purity scenarios.
    advantage-2
    04
    Superior Structural and Sealing Performance
    Through precision forming and finishing processes, the crucible has uniform wall thickness, clean and scratch-free inner walls, good sealing performance, and strong high-temperature erosion resistance. It reduces leakage and adhesion of molten medium, facilitating cleaning and repeated use.
    advantage-2
    05
    Excellent Customization and Processing Performance
    Customizable into special-shaped structures such as cylindrical, square, and conical, supporting wall thickness adjustment, bottom thickening, integrated lid design, etc. It adapts to the needs of different experimental equipment and production processes with a high degree of personalization.
    advantage-2
    06
    Long Service Life
    Combines high strength, high toughness, and thermal shock resistance, capable of withstanding repeated heating and cooling cycles without the risk of stress cracking. Surface treatment processes further improve corrosion resistance, resulting in a much longer service life than ordinary metal and ceramic crucibles.
    advantage-2

    Production Process

    1. Raw Material Preparation: Tantalum ore is processed through mineral processing, enrichment, reduction, and other processes to extract high-purity tantalum sponge, which is then refined and melted multiple times in a vacuum arc furnace to produce high-purity tantalum ingots (uniform composition, extremely low impurity content) complying with American Standard R05200 grade.
    2. Forging and Rolling: The tantalum ingot is heated to a specific temperature and then forged to eliminate internal defects and improve density, followed by precision rolling to produce uniform tantalum plates/strips, laying the foundation for crucible forming.
    3. Precision Forming: Stamping and spinning processes are used for forming according to crucible specifications. Small crucibles adopt one-piece stamping forming, while large/special-shaped crucibles use spinning + seamless welding processes to ensure uniform wall thickness, qualified concentricity, and complete structure.
    4. Intermediate Annealing: Intermediate annealing is inserted during the forming process to eliminate processing internal stress, restore material plasticity, avoid cracking and deformation in subsequent processing, and ensure forming accuracy and structural stability.
    Niobium-Mesh2
    Niobium-Mesh-(2)

    Production Process

    1. Finished Product Annealing: According to the customer's required processing state (soft state, hard state), the formed tantalum crucibles undergo finished product annealing treatment. Annealing temperature, holding time, and cooling rate are precisely controlled to eliminate residual stress and ensure that the mechanical properties and high-temperature stability of the crucibles meet requirements.
    2. Surface Treatment: The annealed crucibles are subjected to surface treatment, which can choose pickling (removing oxide scale) or bright annealing (improving finish) to ensure the quality and corrosion resistance of inner and outer walls.
    3. Finishing and Inspection: The finished products undergo trimming, deburring, and dimensional calibration to meet customer specifications; subsequent strict inspections are carried out, including composition re-inspection, dimensional accuracy testing, surface quality testing, mechanical performance testing, and sealing testing, with attached material inspection reports and quality certificates.

    Application Fields

    01
    Laboratory Research
    Micro-sample melting, trace analysis, special reaction experiments, high-purity material preparation, and high-temperature corrosion simulation tests in universities and research institutions, ensuring experimental accuracy and material purity.
    6511419c2763338526
    02
    Electronic Industry
    Purification of semiconductor materials, melting of precision electronic component raw materials, superconducting material preparation, and high-end capacitor material processing. Relying on high purity and high-temperature stability, it improves the performance of electronic materials.
    6511419c2763338526
    03
    New Material Field
    Melting and forming of special alloys, ceramic materials, and composite materials, purification of rare earth elements, and research and development of new functional materials, adapting to the needs of high-purity and high-temperature working conditions.
    6511419c2763338526
    04
    Aerospace
    Preparation of aerospace special materials, raw material processing of core engine components, and high-temperature environment simulation experiments. Combining extreme environment tolerance and structural stability, it adapts to the strict requirements of the aerospace field.
    6511419c2763338526
    05
    Medical Devices
    Purification of biomedical materials and melting of special medical alloys. The material is safe, non-toxic, and free of impurity precipitation, complying with medical device hygiene standards and ensuring material biocompatibility.
    6511419c2763338526
    06
    Chemical Field
    Reaction containers for strong corrosive media, purification of special chemicals, and molten salt reaction devices. Utilizing extreme corrosion resistance to extend equipment service life and improve production safety and material purity.
    6511419c2763338526

    Send Inquiry

    As a professional expert providing solutions for pure tantalum (R05200, complying with ASTM B708 American Standard) and various metal foils/strips, pipes, rods/wires, plates, and crucibles, Baoji Yunjie is always at your service! For a full range of metal materials and products such as titanium, tantalum, niobium, zirconium, nickel, aluminum, tungsten, and cobalt, please feel free to contact us!