Molybdenum heat shields and covers used as insulating and reflecting elements in high-temperature resistance and sapphire-growth furnaces. High density, accurate dimensions and smooth surfaces improve crystal growth and thermal efficiency. Available in pure Mo, TZM and Mo-La — all sizes custom to your drawing.
| Thickness | Diameter (max) | Height (max) |
|---|---|---|
| 2.0 ± 0.1 | 450 ± 2 | 660 ± 1 |
| 1.0 ± 0.08 | 610 ± 2 | 660 ± 1 |
| 0.5 ± 0.04 | 700 ± 2 | 660 ± 1 |
| 0.3 ± 0.03 | 700 ± 2 | 660 ± 1 |
| Material / Purity | Mo ≥ 99.95% |
| Density | 10.2 g/cm³ |
| Materials | Pure Mo · TZM · Mo-La |
| Standard | ASTM B386 |
| Service temperature | < 1900 °C |
| Size | Custom to drawing |
| Quantity | As required |
| Atomic number | 42 |
| CAS number | 7439-98-7 |
| Atomic mass | 95.94 g/mol |
| Melting point | 2620 °C |
| Boiling point | 4639 °C |
| Density (20 °C) | 10.22 g/cm³ |
| Crystal structure | Body-centered cubic |
| Thermal expansion (20 °C) | 5.2 × 10⁻⁶ m/(m·K) |
| Thermal conductivity (20 °C) | 142 W/(m·K) |
| Specific heat (20 °C) | 0.25 J/(g·K) |
| Electrical conductivity (20 °C) | 17.9 × 10⁶ S/m |
| Resistivity (20 °C) | 0.056 (Ω·mm²)/m |
Mo powder mixed to grade.
Cold isostatic pressing.
Medium-frequency sintering furnace.
Formed and machined to shield geometry.
Insulating and reflecting shields that improve crystal growth.
Shields that withstand high temperature and corrosion.
High-density, smooth-surface elements for hot-zone insulation.
Heat shields and covers made to drawing for special furnaces.
Send your thickness, diameter, height and material — or a drawing. Quotes within one business day.