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PTU1024 Leco® Platinum Crucibles & Molds

Catalog No.PTU1024
SizeCustomized
MaterialPtAu5 (95% Pt and 5% Au)
PurityPt ≥ 99.95%

TFM is a leading global supplier of platinum-based products, offering an extensive selection that includes Standard Platinum Crucibles, Leco® Platinum Crucibles and Molds, Phoenix Platinum Crucibles and Molds, and Claisse® Platinum Crucibles and Molds, among others. We also offer bespoke solutions, allowing you to request custom shapes and designs based on your specific requirements or provided drawings.

Introduction

Leco® platinum crucibles and molds are precision-engineered laboratory consumables designed for high-temperature analytical applications, particularly in elemental analysis and sample fusion. Renowned for their exceptional chemical inertness and thermal stability, these platinum-based components are widely used in analytical laboratories, metallurgy, and materials science, where accuracy and repeatability are critical.

Detailed Description

Leco® Platinum Crucibles

Code

B

A2

D

A1

Weight

PT9801

35

37

20

44

45

PT9802

38

35

21

44

45

Leco® Platinum Molds

Code

D2

A2

A1

B

C

Weight

PT9803

35

36

44

7.2

0.8

35

PT9804

35

38.5

44

7.2

0.8

45

PT9805

39

41

47

4.2

0.8

40

PT9806

39

41

52

5

0.8

40

Leco® platinum crucibles and molds are typically fabricated from high-purity platinum or platinum alloys (such as Pt-Rh), ensuring excellent resistance to corrosion, oxidation, and chemical attack even at elevated temperatures exceeding 1000°C. These properties make them ideal for repeated use in harsh analytical environments, including combustion analysis and fusion sample preparation.

The precise geometry and surface finish of these crucibles and molds are optimized for compatibility with Leco® analytical instruments, ensuring consistent sample handling and reliable results. Platinum’s high melting point (~1768°C) and excellent thermal conductivity contribute to uniform heating and cooling, reducing thermal gradients and minimizing sample contamination.

In fusion processes, platinum molds are used alongside crucibles to form uniform glass beads for XRF (X-ray fluorescence) analysis. The smooth, non-reactive surface ensures easy release of samples and prevents adhesion or contamination.

Key features include:

  • High-purity platinum or platinum alloy construction (Pt, Pt-Rh)

  • Excellent chemical resistance and oxidation stability

  • Superior thermal conductivity for uniform heating

  • Long service life under repeated high-temperature cycles

  • Precision dimensions for compatibility with Leco® systems

Applications

Leco® platinum crucibles and molds are widely used in:

  • Elemental analysis (carbon, sulfur, oxygen, nitrogen testing)

  • Sample combustion in analytical instruments

  • XRF sample preparation (fusion bead method)

  • Metallurgical and materials testing laboratories

  • Geological and mineral analysis

  • High-temperature chemical processing and research

Technical Parameters

ParameterTypical Value / RangeImportance
MaterialPt / Pt-Rh alloyEnsures chemical inertness
Purity≥ 99.95%Minimizes contamination
Melting Point~1768°C (Pt)Suitable for high-temperature use
Operating Temp.Up to 1200–1400°C (continuous)Supports analytical processes
DimensionsStandard Leco® sizes (customizable)Ensures instrument compatibility
Surface FinishSmooth, polishedPrevents sample adhesion

Comparison with Related Materials

MaterialKey AdvantageTypical Application
Platinum (Pt)Excellent chemical stabilityAnalytical crucibles
Pt-Rh AlloyImproved mechanical strengthHigh-temperature fusion
Nickel (Ni)Cost-effectiveLess demanding analysis
Alumina (Al₂O₃)High temperature resistanceGeneral lab use

FAQ

QuestionAnswer
Are these crucibles compatible with all Leco® instruments?They are designed for standard Leco® systems; customization is available for specific models.
Can Pt-Rh alloys be supplied instead of pure platinum?Yes, Pt-Rh alloys are available for enhanced durability and high-temperature performance.
How long is the service life?With proper handling, platinum crucibles can last for many cycles due to their مقاومت to corrosion and thermal stress.
How should they be cleaned?Typically cleaned using appropriate acids or high-temperature cleaning methods, depending on application.
Can sizes be customized?Yes, dimensions and shapes can be tailored to meet specific requirements.

Packaging

Our Leco® Platinum Crucibles & Molds are meticulously tagged and labeled externally to ensure efficient identification and maintain high standards of quality control. We take great care to prevent any potential damage during storage and transportation, ensuring the products arrive in perfect condition.

Conclusion

Leco® platinum crucibles and molds provide unmatched reliability and performance for high-temperature analytical applications. Their superior chemical resistance, thermal stability, and precision manufacturing make them indispensable tools in laboratories and industrial testing environments.

For detailed specifications and a quotation, please contact us at sales@thinfilmmaterials.com.

 

 

 

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FAQ

A crucible is a heat-resistant container designed to hold materials during high-temperature processes such as melting, alloying, or chemical reactions. They’re essential in metal casting, laboratory analyses, and even certain thin-film deposition systems.

Crucibles are usually made from ceramics like alumina, zirconia, silicon carbide, or magnesia due to their high melting points and chemical inertness. Graphite and metal (e.g., steel) crucibles are also used for lower temperature applications.

The ideal crucible depends on the temperature and chemical nature of the process. Always select a crucible material with a melting point significantly higher than that of the material being processed and one that is chemically compatible to prevent reactions or contamination.

Always wear appropriate personal protective equipment (PPE) such as heat-resistant gloves, face shields, and aprons. Use proper tongs for handling, ensure adequate ventilation, and follow established protocols to avoid thermal shock and accidental spills.

Prior to use, crucibles are usually “dried” or pre-fired to remove moisture and avoid thermal shock. Some applications recommend a seasoning or “dressing” process to improve performance and extend the crucible’s lifespan.

Crucibles should be stored in a dry, well-ventilated area on wood shelving or other non-abrasive supports—not directly on concrete or metal floors—to avoid damage. They should also not be nested together to prevent chipping or cracking.

Yes, most crucibles are designed for multiple uses if they’re properly maintained and cleaned. However, frequent use at extreme temperatures or for reactive materials may eventually degrade them, in which case replacement is necessary.

Common challenges include cracking from rapid temperature changes (thermal shock), contamination from residual materials, and wear or erosion from high-temperature exposure. Following proper handling and maintenance guidelines helps mitigate these issues.

Allow the crucible to cool completely, then remove any residues with a suitable scraper or chemical cleaner if recommended. Some crucibles benefit from an acid wash to remove stubborn deposits—but always follow the manufacturer’s guidelines to prevent damage.

Ensure the crucible is pre-heated and free of moisture. Load the material slowly and evenly using appropriate tools to prevent splashing or uneven heating. For heavy or large pieces, use tongs or specialized equipment to maintain safety and consistency.

In metal casting, crucibles are used to melt and hold metals for forming alloys or casting components. In evaporation processes (e.g., thin-film deposition), they heat materials to their vaporization point, allowing controlled deposition onto substrates.

Their ability to withstand extreme temperatures and resist chemical reactions makes crucibles indispensable. They enable precise control over high-temperature processes in metallurgy, materials science, and chemical analysis, ensuring product quality and process reliability.

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