Molybdenum in its pure form is a silver-grey metal most noted for its high melting point of 2620°C and low coefficient of thermal expansion among commonly used metals. Molybdenum is termed a refractory metal and is part of the group of transition metals.
Molybdenum retains its strength and creep resistance at high temperatures. Its strength increases even further the more the material is formed. It is also characterized by good thermal conductivity and a low specific electrical resistance.
The ductility of the Molybdenum decreases as the recrystallization level increases. The restructuring of the grain reduces the strength and hardness while increasing the likelihood of fractures. The recrystallization temperature depends on the degree of deformation of Molybdenum and its chemical compositions.
Molybdenum first appeared in the early 20th century in the manufacture of incandescent lamps. Since that first appearance, engineers and scientist continue to apply Molybdenum’s excellent thermal properties in industries from aerospace to commercial heat treating.
MOLYBDENUM QUICK FACTS
- Symbol: Mo
- Category: Transition Metal, Group VI
- Atomic Number: 42
- Crystal Structure: Body-centered Cubic
- Discovered: 1778
Molybdenum Forms and Sizes
Ed Fagan is a leading supplier of refractory metals and alloys. Rely on our unmatched inventory for all your Molybdenum plate, round bar/rod, sheet, threaded rod & nuts, and wire requirements along with our in-house fabrication services when you need your order shipped to size.
Our Molybdenum threaded rod is stocked in sizes #10, 0.250” and 0.375”. Matching Molybdenum nuts are stocked in 32 threads, 20 threads and 16 threads per inch respectively. We will cut threaded rod to your exact specifications.
Molybdenum Characteristics and Properties
Pure Molybdenum exhibits the following unique properties. View all the typical mechanical, physical, chemical properties and specifications this metal provides.
- High Melting Point
- High Strength at Elevated Temperatures
- High Thermal Conductivity
- High Elastics Modulus
- High Corrosion Resistance to Molten Glass and Metals
- Low Vapor Pressure
- Low Thermal Expansion
- Low Heat Capacity
- ASM & ASTM Specifications
Molybdenum can be machined by all of the common metal machining processes. No special equipment or procedures are required to produce parts with accurate dimensions with excellent finishes. Molybdenum may be machined to achieve simple parts, very complex parts/shapes and very small intricate parts.
Learn about the tools, lubricants, and machine settings recommended for sawing, shearing, turning, milling, shaping, reaming, threading grinding, buffing and honing; as well as techniques for electro-polishing and photo-etching.
Molybdenum is widely used in several industries due to various properties and characteristics this element possesses. The following list represents a sampling of some of the industries and applications where Molybdenum is employed.
Aerospace & Defense
- Heat Radiation Shields
- High Temperature Structural Parts
- Leading Edges of Control Surfaces
- Nose Cones
- Re-entry Cones
- Rocket Nozzles
- Support Vanes
- Furnace Boats & Other Containers
for Components Exposed to High Temperatures
- Heat Shields
- Resistance Heating Elements
- Structural Furnace Members
- Vacuum Furnaces
- Glass-to-Metal Seals
- Magnetron End Hats
- Power Tube Grids
- Ribbons & Wires for Lighting
- X-ray Tube Components
For more information on technology, engineering and advanced materials applications, you can visit the IEEE website, one of the largest technical professional organizations worldwide.
Furnace photo courtesy © Plansee SE Reprinted with permission. All rights reserved.
Ed Fagan is a leading ISO certified global supplier for users of refractory metals and alloys. Since 1965, our customers have relied on our personalized customer service, competitive pricing, high-quality materials and on-time delivery.