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Product Description
Technical details, material information and manufacturing notes for this product.
1. Key Properties for Fabrication
High Melting Point: Second only to tungsten and tantalum among readily available metals.
Low Thermal Expansion: 4.8*10-6/℃, making it dimensionally stable during rapid temperature shifts.
High Thermal/Electrical Conductivity: Better than most steels, making it excellent for heat sinks and electrodes.
Corrosion Resistance: Highly resistant to mineral acids and molten glass.
2. Common Fabricated Moly Components
| Part Category | Specific Examples | Common Applications |
| Furnace Hardware | Heating elements, heat shields, sintering boats, hearth rails | Vacuum and hydrogen atmospheres, HIP (Hot Isostatic Pressing). |
| Semiconductor | Ion implant arc chambers, sputtering targets, electrodes | Wafer processing and thin-film deposition. |
| Glass/Ceramic | Stirrers, orifice rings, glass melting electrodes | Production of high-quality glass and fiberglass. |
| Electronics | Power semiconductor heat sinks, LED chips, X-ray targets | Thermal management and medical imaging. |
| Aerospace | Rocket nozzles, leading-edge components, valve seats | Missile and high-speed aircraft propulsion systems. |
3. Fabrication Methods
Machining
Typically involves CNC milling, turning, and threading.
Because molybdenum is abrasive, carbide or diamond-tipped tools are often required.
EDM (Electrical Discharge Machining)
Ideal for complex geometries or thin-walled parts where mechanical stress must be avoided.
Welding & Brazing
Requires inert gas shielding (like Argon) to prevent oxidation.
Vacuum brazing is often used for high-purity assemblies.
Metal Forming
Thin sheets can be stamped or folded.
Thicker sections often require heating (warm-working) to prevent cracking.
4. Popular Alloys for Better Performance
TZM (Titanium-Zirconium-Molybdenum): Higher strength and better creep resistance than pure molybdenum at temperatures above 1,000℃.
Mo-La (Molybdenum-Lanthanum Oxide): Also known as "ML" or "Non-Sag" moly; it stays ductile after recrystallization, making it better for thin foils and furnace elements.
Pro Tip
If you are sourcing these parts, always specify if the environment is oxidizing.
Molybdenum begins to oxidize rapidly in air above 400°C.
Therefore, it is almost exclusively used in vacuum, inert, or reducing atmospheres.
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Related Technical Resources
Material guides, application notes and manufacturing knowledge from ROBUST.
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