≥99.95% · Ø0.1 – 3.2 mm · GB/T 4182-2017

Molybdenum Wire

Molybdenum wire drawn from groove-rolled and swaged bar, with ultra-high tensile strength, high cutting precision, low elongation and consistent diameter for long, break-resistant service. Diameters Ø0.1–3.2 mm in black, alkali-washed or electropolished finishes — for EDM wire-cutting, thermal spray, filament supports, heating elements and electric-vacuum parts.

Ø0.1 – 3.2 mmBlack / white (cleaned)≥99.95% purityGB/T 4182 · ASTM F289

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Gallery

Molybdenum Wire photos

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Specifications

Sizes & technical data

Wire types & diameters

Type	Diameter (tolerance)
EDM wire	0.007″ – 0.01″ (±3% wt)
Spray wire	1/16″ – 1/8″ (±1 – 3% wt)
Standard wire	0.002″ – 0.08″ (±3% wt)

Key parameters

Grade / Purity	Mo ≥ 99.95%
Diameter	Ø0.1 – 3.2 mm (0.05 – 5 mm available)
Best-selling sizes	0.18 · 0.2 · 3.17 · 3.2 mm
Surface	Black / alkali-washed / electropolished
Standard	GB/T 4182-2017 · ASTM F289-96(2019)
Packing	Spooled · vacuum / N₂ packed

Physical & chemical properties

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

Chemical composition (wt %, max)

≤0.001

≤0.0006

≤0.003

≤0.0006

≤0.001

≤0.0006

≤0.001

≤0.005

≤0.0006

Balance

Production process

How it is made

Powder blending

Mo powder mixed to grade.

Pressing

Isostatic pressing into a green body.

Sintering

Medium-frequency sintering furnace.

Drawing

Drawn to final diameter on a wire bench.

Applications

Where molybdenum wire is used

EDM wire-cutting

High-precision molybdenum wire for wire-cut machines.

Heating elements

High-temperature furnaces, automotive and aerospace heating.

Lighting & electron tubes

Filament supports, halogen lamps, leads, grids and mandrels.

Cathode & spray materials

Thermal-spray feedstock and cathode materials.

Molybdenum Wire

Molybdenum Wire photos

Sizes & technical data

Wire types & diameters

Key parameters

Physical & chemical properties

Chemical composition (wt %, max)

How it is made

Powder blending

Pressing

Sintering

Drawing

Where molybdenum wire is used

EDM wire-cutting

Heating elements

Lighting & electron tubes

Cathode & spray materials

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