Mo 99.95% · Sintered one-piece · ASTM B387

Molybdenum Tube

Molybdenum tubes and pipes with high melting and boiling points, high-temperature and corrosion resistance and low thermal expansion. Sintered as one piece — no bonding — with a polished silver finish. Used for electron-tube parts, furnace heaters, thermocouple protection tubes, sapphire-furnace supports and the solar industry. Outer diameter, inner diameter and length custom to your drawing.

ID > 5 mmWall < 6 mmSintered one-pieceASTM B387

Request a quote WhatsApp

Gallery

Molybdenum Tube photos

Click any photo to enlarge

Specifications

Sizes & technical data

Tube dimensions

Inner diameter (ID)	> 5 mm
Wall thickness (WT)	< 6 mm
Outer diameter (OD)	Custom
Max length	200 mm (smaller tubes also available)

Key parameters

Grade / Purity	Mo-1 · 99.95%
Density	10.2 g/cm³
Colour / surface	Silver · polished
Construction	Sintered as one piece (no bonding)
Standard	ASTM B387
Size	Custom OD / ID / length
Packing	Anti-shock / moisture wooden case

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.

Forging

Press forging to size.

Polishing & cutting

Polished and cut to length.

Applications

Where molybdenum tube is used

Electron-tube parts

Tubes for electron-tube components.

Furnace heaters

Heater tubes for high-temperature furnaces.

Thermocouple protection

Thermocouple protection and holder tubes.

Sapphire & solar

Supports for sapphire single-crystal furnaces and the solar industry.

Need a custom molybdenum tube?

Send your OD, ID, wall thickness and length — or a drawing. Quotes within one business day.

Request a quote WhatsApp +86 195 7498 9725