High-Purity Niobium Crucibles from China's Leading Suppliers and Factory for Extreme High-Temperature Precision Melting
Product specification
| Item | Regular Specifications (Laboratory Small Crucibles) |
Regular Specifications (Industrial Medium/Large Crucibles) |
Customization Range |
|---|---|---|---|
| Volume Specification | 10ml–500ml commonly used 25ml / 50ml / 100ml / 250ml |
500ml–5L commonly used 1L / 2L / 3L / 5L |
5ml–50L, customized special-shaped volume and dimensions on demand |
| Wall Thickness Specification | 0.08mm – 2.0mm | 2.0mm – 8.0mm | 0.5mm – 15mm, customizable thickened walls for high-pressure scenarios |
| External Dimensions | Caliber 5mm–100mm Height 5mm–150mm (cylindrical / conical) |
Caliber 100mm–300mm Height 150mm–500mm (cylindrical / square) |
Caliber 15mm–500mm, Height 20mm–800mm, supporting customized special-shaped external dimensions |
| Tolerance Range | Wall thickness: ±0.01mm Dimensional: ±0.1mm Compliant with ASTM B394 |
Wall thickness: ±0.1mm Dimensional: ±0.2mm Compliant with ASTM B394 |
Customizable precision-grade tolerance to meet high-end experimental and equipment assembly requirements |
| Forming Method | Integral spinning forming Stamping forming |
Integral spinning forming Welding forming (for large-sized products) |
Customizable forming process on demand to ensure structural strength and sealing performance |
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Volume Range
5ml – 50L
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Wall Thickness
0.5mm – 15mm
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Caliber Range
15mm – 500mm
🎯
Precision Tolerance
±0.01mm (Lab Grade)
✅
Standard Compliance
ASTM B394
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Forming Methods
Spinning / Stamping / Welding
★ Key Advantages
Why Choose Our Crucibles?
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Lab-Grade Precision
Wall thickness tolerance as tight as ±0.01mm and dimensional tolerance of ±0.1mm — meeting the strictest laboratory requirements compliant with ASTM B394.
⚙️
Wide Volume Range
From 5ml micro-lab crucibles to 50L industrial-scale vessels, our full range covers both research and large-volume production applications.
🛠️
Full Custom Capability
Special-shaped volumes, thickened walls for high-pressure use, and custom forming processes — all available on demand to match your exact specifications.
🏗️
Versatile Forming Methods
Integral spinning, stamping, and welding forming methods ensure optimal structural strength and sealing performance across all product sizes.
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Industrial Scale Ready
Medium and large crucibles up to 5L in standard configurations, with caliber up to 300mm and height up to 500mm — engineered for demanding industrial environments.
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Standard Compliant
All products are manufactured in compliance with ASTM B394 standards, ensuring consistent quality, reliable tolerances, and compatibility with international equipment.
Frequently Asked Questions
Q
What is the minimum and maximum volume available for your crucibles?
Our standard laboratory small crucibles range from 10ml to 500ml, while industrial medium and large crucibles cover 500ml to 5L. Through our customization program, we can manufacture crucibles from as small as 5ml up to 50L, with special-shaped volumes also available on request.
Q
What tolerance standards do your crucibles comply with?
Our crucibles comply with the ASTM B394 standard. Laboratory-grade small crucibles achieve wall thickness tolerances of ±0.01mm and dimensional tolerances of ±0.1mm. Industrial-grade crucibles maintain ±0.1mm wall thickness and ±0.2mm dimensional tolerances. Custom precision-grade tolerances are also available for high-end experimental or equipment assembly needs.
Q
Can you manufacture crucibles in special shapes or non-standard dimensions?
Yes. Our customization range supports special-shaped volumes, non-standard external dimensions (caliber up to 500mm, height up to 800mm), and thickened walls up to 15mm for high-pressure scenarios. We can also customize the forming process — spinning, stamping, or welding — to meet your specific structural and sealing requirements.
Q
What forming methods are used to manufacture the crucibles?
We use three primary forming methods: integral spinning forming, stamping forming, and welding forming. Spinning and stamping are typically applied to small and medium crucibles, while welding forming is used for large-sized products where seam integrity and structural strength are critical. Custom forming methods can also be specified based on your application requirements.
Q
What wall thickness options are available for high-pressure applications?
Standard laboratory crucibles feature wall thicknesses from 0.08mm to 2.0mm, while industrial crucibles range from 2.0mm to 8.0mm. For high-pressure applications, our customization program supports wall thicknesses from 0.5mm up to 15mm, ensuring robust performance under demanding operating conditions.
Q
What are the most commonly ordered sizes for laboratory and industrial use?
For laboratory use, the most commonly ordered volumes are 25ml, 50ml, 100ml, and 250ml. For industrial applications, the most popular sizes are 1L, 2L, 3L, and 5L. Both cylindrical and conical shapes are standard for lab crucibles, while cylindrical and square configurations are available for industrial models.
Classification
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Classification by Product Form
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Classification by Material Performance
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Classification by Machining Precision
Specification Selection Guide & Chemical Composition Standards
|
Product Type |
Specifications |
Core Features |
Application Scenarios |
|
Ultra-Thin Metal Discs |
Thickness starting from 0.03mm, diameter 2–50mm |
Ultra-thin & flexible, ultra-high precision, burr-free, excellent conductivity |
Semiconductor chip accessories, micro electronic contacts, precision sensors, miniature medical devices |
|
Conventional Metal Discs |
Thickness 0.1–2mm, diameter 50–100mm |
High structural strength, good flatness, superior batch consistency |
High-end tooling fixtures, equipment sealing gaskets, conductive connectors, aerospace precision components |
|
Standard Metal Cups |
Thickness 0.076–0.254mm, flat/spherical/conical shape |
High pressure & deformation resistance, high fitting accuracy, wear resistance & durability |
Supporting for diamond wire drawing molds, PCD/PCBN super-hard cutting tools |
|
Custom Special-Shaped Metal Cups |
Non-standard thickness & special-shaped full-size customization |
Custom-fit design, high fitting precision, stable performance under extreme conditions |
Deep oil & gas well drilling, special super-hard material processing, new material R&D |
|
Material |
Substrate Purity |
Total Impurity Content |
Core Standard |
|
Molybdenum / Tantalum |
≥99.95% |
≤0.05% |
High temperature resistance, low impurity, high vacuum compatibility |
|
Zirconium / Niobium |
≥99.9% |
≤0.1% |
Superior corrosion resistance, high pressure resistance, erosion resistance |
|
Titanium / Nickel |
≥99.5% |
≤0.5% |
Lightweight, biocompatible, stable conductivity |
01
Ultra-High Purity & Zero Contamination
All refractory metal substrates reach purity ≥99.9% with extremely low impurity content. No contamination occurs during processing, ensuring no impact on the accuracy and performance of high-end products, fully adapting to high-purity precision manufacturing processes.
02
Extreme & Controllable Dimensional Accuracy
Adopting precision stamping technology, the core dimensional tolerance is strictly controlled within ±0.001mm. Products feature high flatness, no deformation and no burrs with excellent assembly fitting performance, meeting the precision assembly requirements of micro-precision components.
03
Wide Adaptability for High-Temperature & High-Pressure Extreme Conditions
Refractory metal substrates possess excellent high-temperature resistance, withstanding temperatures up to 2600℃. Combined with outstanding high-pressure and anti-deformation capabilities, they operate stably in extreme scenarios such as deep well drilling, ultra-high temperature sintering and high-strength processing.
04
Superior Corrosion & Wear Resistance with Long Service Life
Maintaining stable performance under acid-base corrosion, high-temperature oxidation and high-speed scouring environments, the products feature anti-aging and wear-resistant properties, effectively reducing accessory replacement frequency and lowering production costs.
05
Stable Electrical & Thermal Conductivity
Metal substrates deliver excellent and uniform heat and electrical conduction without local overheating or unstable resistance, perfectly suitable for semiconductor and power conduction precision components.
06
Flexible Customization & Strong Adaptability
Supporting full-dimensional customization of thickness, size and shape. Standard specifications are sufficiently in stock, and special-shaped products support rapid die opening to accurately match non-standard equipment and special process requirements.
07
Excellent Batch Consistency
Equipped with automated precision production lines and standardized molds, products maintain highly unified size and performance, ideal for large-scale industrial supporting production.
Production Process
- Refractory metal raw material inspection → precision plate leveling → CNC cutting & blanking → integral precision stamping via standardized molds → high-precision dimension calibration → edge deburring & polishing → surface precision cleaning → triple inspection (material purity, dimensional tolerance, appearance defect) → sorting & classification → finished product packaging → delivery with complete test reports
01
Petroleum & Gas Drilling Industry
Custom high-purity metal cups matched for polycrystalline diamond compacts feature high pressure resistance, corrosion resistance and erosion resistance. They adapt to extreme deep and ultra-deep well drilling conditions, improving the stability and service life of drilling equipment.
02
Super-Hard Tool & Mold Industry
Supporting stamping parts for PCD inserts, PCBN inserts, diamond cutters, CBN tools and diamond wire drawing molds enhance tool clamping stability, machining accuracy and wear resistance.
03
Electronics & Semiconductor Industry
Precision metal discs are applied in chip packaging, electronic contacts, semiconductor equipment tooling and sensor induction components. High purity and conductivity ensure long-term stable operation of electronic devices.
04
Aerospace Industry
Suitable for aerospace precision instrument components, special sensor parts and aerospace tooling accessories. Lightweight, high-strength and high-temperature resistant properties meet extreme environmental requirements of aerospace equipment.
05
Medical Device Industry
Titanium and high-purity nickel stamped parts are used for minimally invasive device accessories and medical testing equipment components. Featuring good biocompatibility, high precision, non-magnetic and pollution-free performance, they fully comply with medical safety standards.
06
High-End Precision Manufacturing Industry
Applicable for precision mold accessories, special tooling fixtures, new energy equipment conductive parts and new material R&D consumables, providing core precision support for high-end precision equipment and special industrial processes.
Enterprise Advantages & Services
- Baoji Yunjie Metal has specialized in refractory metal precision manufacturing for over 30 years, owning mature precision stamping core technologies and multiple technical patents with ISO9001 quality system certification. We feature full material coverage, ultra-high precision, rapid die opening, stable delivery and superior quality. Standard products are in stock for immediate shipment, customized orders support quick response, small-batch trial production and large-scale stable mass production. All products undergo strict triple quality inspection on material purity, dimensional accuracy and appearance performance, maintaining a leading customer repurchase rate in the industry.
- Free Services: Material selection consultation, size specification optimization, special-shaped structure design, sample testing, exclusive batch customization solutions.
Send Inquiry
As a professional expert providing solutions for pure tantalum (R05200, complying with ASTM B708 American Standard) and various metal accessories and custom machined parts, Baoji Yunjie focuses on precision machining-to-drawing capability, fully meeting customers' machining needs from standard parts to complex custom parts! For a full range of metal materials and products such as titanium, tantalum, niobium and zirconium, welcome to provide drawings for consultation and customization. We will accurately reproduce designs and deliver products efficiently.