Purity 99.95% Ground Molybdenum Rod

Description Of Purity 99.95% Ground Molybdenum Rod

Purity 99.95% Ground Molybdenum Rod is a high-purity refractory metal product manufactured from molybdenum powder through powder metallurgy, sintering, and subsequent thermo-mechanical processing such as forging, swaging, or rolling. The “Ground” designation indicates that the rod has been precision ground to achieve tight dimensional tolerances, excellent straightness, and a smooth surface finish. The “99.95%” purity level (3N5 grade) ensures minimal contamination in critical high-temperature and semiconductor applications. The material is also designated as Grade Mo1 per ASTM B387 and GB/T 4188-2017 standards.

Molybdenum possesses a unique combination of properties that make it indispensable in high-temperature industrial applications. With a melting point of 2610°C–2620°C, a density of 10.2 g/cm³, excellent thermal conductivity (~138 W/m·K), and a low coefficient of thermal expansion (5.1×10⁻⁶/K), ground molybdenum rods deliver reliable performance in the most demanding thermal environments. The precision ground surface further enhances performance by ensuring accurate fit, reduced friction, and consistent electrical and thermal contact.

The manufacturing process begins with high-purity molybdenum powder (Mo ≥ 99.95%), which is pressed into bar blanks and sintered at high temperatures. The sintered bars are then processed through forging, swaging, or rolling to achieve the desired density and mechanical properties. Finally, the bars undergo precision centerless grinding to achieve the specified diameter, straightness, and surface finish. The ground surface can achieve Ra ≤0.8μm, with polished conditions available for even finer finishes.

Purity 99.95% ground molybdenum rods are primarily used in high-temperature furnace heating elements and support rods, semiconductor ion implantation components, glass melting electrodes, and aerospace structural parts.

Features Of Purity 99.95% Ground Molybdenum Rod

High Purity (Mo ≥ 99.95%): Ensures minimal contamination in critical applications such as semiconductor manufacturing and medical equipment. Impurity limits are strictly controlled per ASTM B387.

Precision Ground Surface: The rod is centerless ground to achieve tight diameter tolerances, excellent straightness, and a smooth surface finish (Ra ≤0.8μm). This ensures accurate fit, reduced friction, and consistent electrical and thermal contact.

High Melting Point: With a melting point of 2610°C–2620°C, ground molybdenum rods maintain stability in extreme high-temperature environments without melting or deformation.

Excellent Thermal Conductivity: Thermal conductivity of approximately 138 W/m·K at 20°C enables efficient heat transfer, making molybdenum ideal for heating elements and heat dissipation applications.

Low Coefficient of Thermal Expansion: With a coefficient of thermal expansion of 5.1×10⁻⁶/K, ground molybdenum rods exhibit excellent dimensional stability under thermal cycling.

Good Electrical Conductivity: Molybdenum offers good electrical conductivity (resistivity ~5.7 µΩ·cm at 20°C), suitable for electrode and heating element applications.

High Strength at Elevated Temperatures: Molybdenum maintains good mechanical strength and creep resistance at high temperatures, ensuring structural integrity under sustained thermal loads.

Corrosion Resistance: Molybdenum resists corrosion from most chemical media including acids, alkalis, and salts, and offers excellent resistance to molten glass and many molten metals.

Good Machinability: Molybdenum can be machined using carbide tooling, and is easier to machine than tungsten, enabling precise dimensions and surface finishes.

Specifications Of Purity 99.95% Ground Molybdenum Rod