Molybdenum Crucible

Molybdenum Crucible Data Sheet

Reference:	HMMO1084
Dimensions:	Out Diameter: 10-500 mm Height: 10-600 mm
Standard:	ASTM B387
Material:	Pure Mo361
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. Shanghai Yuepeng 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 Chemical Composition

Material	Mo	Impurities, (≤%）
		Al	Ca	Fe	Mg	Ni	Si	C	N	O	La2O3
Mo1	Bal.	0.002	0.002	0.010	0.002	0.005	0.01	0.01	0.003	0.008	–
Mo2	Bal.	0.005	0.004	0.015	0.005	0.005	0.01	0.02	0.003	0.020	–

Molybdenum Crucible Specifications

Condition	Size(mm)		Tolerance(mm)
	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 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.