Wire-cut EDM
The cutting electrode on fast-wire machines, run at speed and recycled.
HomeProduct categoriesNon-ferrous metals
Molybdenum wire
Drawn molybdenum wire supplied to buyer drawings and diameter requirements. Regular wire is black, graphite-coated; the metallic lustre appears once the graphite is removed.
- Grade / purity
- Grade 1 / Grade 2
- Standard
- Producer standard
- Form
- Spooled wire
Applications
Lamps and vacuum tubes
Lead-in wires, supports and mandrels that stay rigid beside a filament.
Furnace hot zones
Heating elements and refractory parts in vacuum and hydrogen furnaces.
Thermal spraying
Sprayed onto piston and synchroniser rings, where the coating takes the wear.
Specification
| Property | Metric | Imperial |
|---|---|---|
| Density | 10.3 g/cm³ | 0.369 lb/in³ |
| Melting point | 2625 °C | 4760 °F |
| Property | Metric | Imperial |
|---|---|---|
| Tensile strength (annealed) | 324 MPa | 47,000 psi |
| Shear strength (torsional strain rate 0.25/s) | 500 MPa | 72,500 psi |
| Compressive yield strength (0.01% yield) | 400 MPa | 58,000 psi |
| Modulus of elasticity | 330 GPa | 47,900 ksi |
| Modulus of elasticity at 2000 °C / 3630 °F | 160 GPa | 23,200 ksi |
| Thermal coefficient of expansion | 5 × 10⁻⁶ cm/cm @ 25 °C | — |
| Electrical conductivity | 34% I.A.C.S. | — |
| Thermal conductivity | 1.38 W/cm·K @ 298.2 K | — |
| Electrical resistivity | 5.2 µΩ·cm @ 0 °C | — |
| Diameter (µm) | Weight (mg / 200 mm) | Weight tolerance (%) | Diameter tolerance (%) | ||
|---|---|---|---|---|---|
| Grade 1 | Grade 2 | Grade 1 | Grade 2 | ||
| 20 ≤ d < 30 | 0.65 ~ 1.47 | ± 2.5 | ± 3 | — | — |
| 30 ≤ d < 40 | > 1.47 ~ 2.61 | ± 2.0 | ± 3 | — | — |
| 40 ≤ d < 100 | > 2.61 ~ 16.33 | ± 1.5 | ± 3 | — | — |
| 100 ≤ d < 400 | > 16.33 ~ 256.2 | ± 1.5 | ± 4 | — | — |
| 400 ≤ d < 600 | — | — | — | ± 1.5 | ± 2.5 |
| 600 ≤ d < 3200 | — | — | — | ± 1.0 | ± 2.0 |
