99.95% · ASTM B387 · ≤2000 °C

Molybdenum Heater

Molybdenum heaters and heating elements with high conductivity, high-temperature strength, creep resistance and dimensional stability. Used as insulating and reflecting elements in sapphire-growth and vacuum furnaces, where smooth surfaces and accurate geometry improve crystal growth. Recommended working temperature up to 2000 °C — chamber sizes and geometry custom to your drawing.

99.95% purityASTM B387Gray / polished≤2000 °C working temp

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Gallery

Molybdenum Heater photos

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Specifications

Sizes & technical data

Standard chamber sizes (W × H × D)

Chamber size (mm)	Chamber size (mm)
100 × 100 × 100	200 × 200 × 300
120 × 120 × 130	250 × 250 × 300
150 × 150 × 150	300 × 300 × 400
200 × 200 × 200	600 × 600 × 600

Key parameters

Material / Purity	Pure Mo · 99.95%
Density	10.2 g/cm³
Surface	Gray / polished
Standard	ASTM B387
Working temperature	≤ 2000 °C (recommended)
Size	Custom to drawing
Quantity	As required

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

Production process

How it is made

Powder blending

Mo powder mixed to grade.

Isostatic press

Cold isostatic pressing.

Sintering

Medium-frequency sintering furnace.

Forming & machining

Formed and machined to heater geometry.

Applications

Where molybdenum heater is used

Sapphire-growth furnaces

Insulating and reflecting heater elements that improve crystal growth.

Vacuum & high-temp furnaces

Heaters for ceramics, metallurgy, electronics, glass and refractory furnaces.

Heat shields & hot zones

High-density, smooth-surface elements for furnace hot zones.

Custom heating assemblies

Heaters and components made to drawing for special furnaces.

Need a custom molybdenum heater?

Send your chamber size, working temperature and geometry — or a drawing. Quotes within one business day.

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