High-Purity Niobium Crucibles from China Suppliers & Factory: Precision Melting at Extreme Temperatures
Product specification
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Platinum Crucible — Full Specification & Customization Reference
From laboratory-scale micro crucibles to large industrial containers, we offer standard and fully customized solutions covering volume, wall thickness, dimensions, tolerance, and forming methods.
| 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 tolerance: ±0.01mm Dimensional tolerance: ±0.1mm (compliant with ASTM B394 standard) |
Wall thickness tolerance: ±0.1mm Dimensional tolerance: ±0.2mm (compliant with ASTM B394 standard) |
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 |
Key Product Advantages
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Wide Volume Range
From 5ml micro laboratory crucibles to 50L large industrial containers, covering all application scales with precision and reliability.
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Precision Tolerance Control
Wall thickness tolerance as tight as ±0.01mm and dimensional tolerance of ±0.1mm, fully compliant with ASTM B394 international standard.
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Flexible Forming Methods
Supports integral spinning, stamping, and welding forming processes, ensuring optimal structural strength and sealing performance for every use case.
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Full Customization Support
Special-shaped volumes, non-standard dimensions, thickened walls for high-pressure environments — all available on demand to match your exact specifications.
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ASTM B394 Compliance
All standard and custom crucibles are manufactured in accordance with ASTM B394, ensuring consistent quality and dimensional accuracy across every batch.
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High-Pressure Wall Options
Customizable wall thickness from 0.5mm up to 15mm, providing robust solutions for demanding high-pressure laboratory and industrial scenarios.
Frequently Asked Questions
Q
What is the minimum and maximum volume available for platinum crucibles?
Our platinum crucibles are available in volumes ranging from as small as 5ml up to 50L. Standard laboratory sizes include 25ml, 50ml, 100ml, and 250ml, while industrial sizes commonly used are 1L, 2L, 3L, and 5L. Special-shaped volumes outside this range can also be customized on demand.
Q
What tolerance standards do your platinum crucibles comply with?
All our platinum crucibles comply with the ASTM B394 international standard. Laboratory-grade small crucibles achieve wall thickness tolerance of ±0.01mm and dimensional tolerance of ±0.1mm. Industrial medium/large crucibles maintain ±0.1mm wall thickness tolerance and ±0.2mm dimensional tolerance. Precision-grade custom tolerances are also available for high-end experimental and assembly applications.
Q
Can I order a crucible with a non-standard or special shape?
Yes. We fully support customized special-shaped crucibles in terms of both volume and external dimensions. Caliber customization is available from 15mm to 500mm, and height from 20mm to 800mm. Our engineering team will work with you to define the forming process that best ensures structural integrity and sealing performance for your specific application.
Q
What forming methods are used to manufacture platinum crucibles?
We use three primary forming methods: integral spinning forming, stamping forming, and welding forming. Spinning and stamping are typically used for laboratory-scale and medium crucibles, while welding forming is applied to large-sized industrial products. Custom forming processes can also be specified to meet particular structural or sealing requirements.
Q
Are thicker wall options available for high-pressure applications?
Absolutely. Our customization range includes wall thicknesses from 0.5mm up to 15mm. For high-pressure laboratory or industrial scenarios, we can manufacture thickened-wall platinum crucibles that provide enhanced durability and resistance to deformation under pressure.
Q
How do I choose between a cylindrical, conical, or square crucible shape?
The choice of shape depends on your application. Cylindrical and conical crucibles are standard for laboratory use, offering easy pouring and cleaning. Square or rectangular shapes are more common in industrial settings where space efficiency and stacking are priorities. We can advise on the most suitable shape and dimensions based on your specific process requirements.
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
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Product Type |
Specifications |
Core Features |
Application Scenarios |
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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 |
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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 |
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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 |
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Material |
Substrate Purity |
Total Impurity Content |
Core Standard |
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Molybdenum / Tantalum |
≥99.95% |
≤0.05% |
High temperature resistance, low impurity, high vacuum compatibility |
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Zirconium / Niobium |
≥99.9% |
≤0.1% |
Superior corrosion resistance, high pressure resistance, erosion resistance |
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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.