Molybdenum Crucible

Standard: ASTM B387

Material: Pure Mo₃₆₁, MoTZM (Mo₃₆₄), Mo-Lanthanoxid (ML)

Custom sizes and standard sizes in stock
Quick Lead Time
Competitive Price

Molybdenum Crucible is made of high-purity molybdenum material, exhibiting high temperature stability, excellent thermal conductivity, and low thermal expansion. As a leading supplier and manufacturer of premium molybdenum products, Heeger Materials leverages advanced machining centers to deliver high-precision molybdenum and molybdenum alloy crucibles for wide ranges of applications.

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Molybdenum Crucible Data Sheet

Reference:	HMMO1084
Dimensions:	Out Diameter: 10-500 mm Height: 10-600 mm
Standard:	ASTM B387
Material:	Pure Mo₃₆₁, MoTZM (Mo₃₆₄), Mo-Lanthanoxid (ML)
Purity:	99.95%-99.99%
Type:	Sintered, Spun, Stamped, and Welded
Temper:	Annealed or Unannealed

Molybdenum Crucible

Molybdenum Crucible has a maximum operating temperature of up to 2000℃ and is widely used as a melting container in sapphire crystal growth, rare earth smelting, coating, and other industries. HM can supply high-precision molybdenum and molybdenum alloy crucibles with high purity, high density, no internal cracks, precise dimensions, and smooth inner and outer walls.

Molybdenum Crucible Specifications

Condition	Size(mm)		Tolerance(mm)
Condition	Diameter (mm)	High (mm)	Diameter (mm)	High (mm)
Sintering	10-500	10-600	±5	±5
Forging	10-130	10-200	±1	±2
Sintering and Machining	100-450	10-500	±0.5	±1

Molybdenum Crucible Production Process

Molybdenum Crucibles can be categorized into sintering molybdenum crucibles and spinning molybdenum crucibles according to different production processes. The Sintering Molybdenum Crucibles are mainly used as high-temperature furnace containers in vacuum, inert, or reducing gases up to 2100 ℃. The Spinning Molybdenum Crucibles are thin-walled crucibles made from a single molybdenum plate by spinning. It is characterized by large size, thin wall thickness, and good resistance to high-temperature creep. The specific sintering processes are as follows:

Raw Material: Select high-purity molybdenum powder.
Powder Metallurgy: Mix with binder and compact into a green billet.
Sintering: High-temperature sintering to remove the binder and increase density.
Heat Treatment: Anneal to relieve stress and enhance properties.
Surface Treatment: Clean and polish the surface.
Cutting & Customization: Cut or customize according to requirements.

Molybdenum Crucible Processing Method

Sintering
Forging
Rotary Forging
Rolling
Polishing

Molybdenum Crucible Surface Finish

Depending on the intended applications, the molybdenum crucible has three main surface finishes as follows:

Black: The surface is “as swaged” or “as drawn”, retaining a coating of processing lubricants and oxides.
Cleaned: The surface is chemically cleaned to remove all lubricants and oxides.
Ground: The surface is centerless ground to remove all coating and to achieve precise dimensions control.

Molybdenum Crucible Applications

Rare Earth Metal Smelting: Molybdenum crucibles are commonly used for smelting and casting metals, especially rare earth materials.
Heat Treatment Of Materials: Molybdenum crucibles are often used as experimental vessels in high-temperature tests.
Chemical Production: Molybdenum crucibles are also commonly used as reaction vessels or heating platforms in chemical processes requiring high-temperature reactions.
Sapphire Single Crystal Growth: Molybdenum crucibles are used as core vessels in sapphire single crystal growth furnaces with high purity, high density, and good thermal stability.

Molybdenum Crucible Packaging

The Molybdenum Crucible is carefully placed in wooden cases or cartons with additional support from soft materials to prevent any shifting during transportation. This packaging method guarantees the integrity of the products throughout the delivery process.

Molybdenum Properties

Item	Value
Atomic number	42
Crystal structure	Body centred cubic
Electronic structure	Kr 4d⁵ 5s¹
Valences shown	2, 3, 4, 5, 6
Atomic weight( amu )	95.94
Thermal neutron absorption cross-section( Barns )	2.65
Photo-electric work function( eV )	4.2
Natural isotope distribution( Mass No./% )	95/ 15.9
Natural isotope distribution( Mass No./% )	96/ 16.7
Natural isotope distribution( Mass No./% )	98/ 24.1
Natural isotope distribution( Mass No./% )	97/ 9.6
Natural isotope distribution( Mass No./% )	92/ 14.8
Natural isotope distribution( Mass No./% )	94/ 9.3
Natural isotope distribution( Mass No./% )	100/ 9.6
Atomic radius – Goldschmidt( nm )	0.14
Ionisation potential( No./eV )	2/ 16.15
Ionisation potential( No./eV )	5/ 61.2
Ionisation potential( No./eV )	Jun-68
Ionisation potential( No./eV )	1/ 7.10
Ionisation potential( No./eV )	3/ 27.2
Ionisation potential( No./eV )	4/ 46.4

Item	Value
Material condition / Temper	Annealed (Soft)
Material condition / Temper	Un-annealed (Hard)
Poisson’s ratio	0.293
Poisson’s ratio	0.293
Bulk modulus( GPa )	261.2
Bulk modulus( GPa )	261.2
Tensile modulus( GPa )	324.8
Tensile modulus( GPa )	324.8
Hardness – Vickers( kgf mm⁻² )	250
Hardness – Vickers( kgf mm⁻² )	200
Tensile strength( MPa )	485-550
Tensile strength( MPa )	620-690
Yield strength( MPa )	550
Yield strength( MPa )	415-450

Item	Value
Electrical resistivity( µOhmcm )	5.7@20@20°C
Superconductivity critical temperature( K )	0.915
Temperature coefficient( K⁻¹ )	0.00435@0-100°C
Thermal emf against Pt (cold 0C – hot 100C)( mV )	1.45

Item	Value
Boiling point( °C)	4612
Density( gcm⁻³ )	10.22@20°C

Item	Value
Melting point( °C )	2617
Latent heat of evaporation( J g⁻¹ )	6153
Latent heat of fusion( J g⁻¹ )	290
Specific heat( J K⁻¹ kg⁻¹ )	251@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	138@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	5.1@0-100°C

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SAFT DATA SHEET (SDS) – Molybdenum Metal

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To customize your molybdenum crucible, please provide the following details:

Diameter
Wall Thickness
Height
Tolerances
Purity (Specify the purity of material required.)
Surface Finish (polished, rough, oxide-coated, etc.)
Quantity of the products you need
Alternatively, you can provide a drawing with your specifications.

Once we have these details, we can provide you with a quote within 24 hours.

We carry a wide variety of molybdenum and molybdenum alloy products in stock, and for these, there is generally no minimum order requirement. However, for custom orders, we typically set a minimum order value of $200. The lead time for stock items is usually 1-2 weeks, while custom orders usually take 3-4 weeks, depending on the specifics of the order.

DFARS (Defense Federal Acquisition Regulation Supplement) compliance is primarily concerned with the sourcing of materials for defense-related applications in the United States. According to DFARS, certain materials used in defense must be sourced from the United States or qualifying countries.

If you have specific molybdenum materials that are subject to DFARS, please let us know in advance and we will confirm.

At Heeger Materials Inc., we take this responsibility seriously. We adhere to all applicable laws and regulations, including Section 1502 of the Dodd-Frank Act. Our company operates with a strict code of ethics and is committed to only partnering with suppliers who share our dedication to responsible sourcing. We support the initiatives and programs aimed at promoting “conflict-free” supply chains and work diligently to ensure that our products meet these standards.

Heeger Materials Inc., established in 2016 in Colorado, USA, is a specialized supplier and manufacturer of tantalum and tantalum alloys. With extensive expertise in supply and export, we offer competitive pricing and customized solutions tailored to specific requirements, ensuring outstanding quality and customer satisfaction. As a professional provider of refractory metals, specialty alloys, spherical powders, and various advanced materials, we serve the research, development, and large-scale industrial production needs of the scientific and industrial sectors.

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Other Crucible Products

Heeger Metal specializes in high-quality customized metal crucibles and alloy crucibles, designed to withstand extreme temperatures for melting and casting applications. Made from durable materials, our crucibles ensure excellent performance in industries such as metallurgy and material science. For more details or custom solutions, feel free to contact us.

Other Molybdenum Products

We offer a wide range of molybdenum and molybdenum alloy products, from powders to finished parts, with customization options available. Please refer to the list for our common products.