Molybdenum Tube | Pure Mo, TZM & MoLa Tubing

Molybdenum Tube & TZM Tube Description

Heeger Materials supplies Molybdenum Tubes, TZM Alloy Tubes, and MoLa Tubes for high-temperature, vacuum, furnace, crystal-growth, electronic, and research applications.

Molybdenum combines a high melting point, low thermal expansion, good thermal conductivity, and dimensional stability at elevated temperatures. For applications requiring increased mechanical performance at elevated temperatures, TZM alloy may be selected. MoLa is also available for selected high-temperature applications.

Tubes can be manufactured according to customer requirements for outer diameter, inner diameter, wall thickness, length, tolerance, surface finish, and end geometry.

Custom sleeves and drawing-based tubular components are also available according to manufacturing feasibility.

Material	Key Characteristics	Typical Selection
Pure Molybdenum	High purity, good thermal conductivity, low thermal expansion	General furnace, vacuum, thermocouple and electronic applications
TZM Alloy	Higher elevated-temperature mechanical strength than pure Mo	High-load and high-temperature structural applications
MoLa Alloy	Improved high-temperature structural stability compared with pure Mo	Furnace and high-temperature thermal applications

Not sure whether to choose Pure Mo, TZM, or MoLa? Send us your operating temperature, atmosphere, tube dimensions, and application for material review.

Molybdenum Tube & TZM Tube Selection Guide

Specify material grade or purity, outer diameter (OD), inner diameter (ID), wall thickness, length, dimensional tolerances, surface condition, quantity, intended application, and documentation requirements.

For custom machined tubes, sleeves, or drawing-based components, please attach a technical drawing for review.

Applications

High-Temperature Furnace Components

Molybdenum and TZM tubes can be used for selected heating, support, shielding, and structural components in vacuum or protective-atmosphere high-temperature furnaces.

Thermocouple Protection

Molybdenum tubes can be used as protective components for thermocouples and temperature-measurement assemblies in suitable high-temperature and controlled-atmosphere environments.

Sapphire Crystal Growth Furnaces

Molybdenum tubular components are used in selected sapphire single-crystal growth furnace assemblies requiring refractory-metal performance at elevated temperatures.

High-Temperature Sintering Furnaces

Pure Mo, TZM, and MoLa tubular components can be used in selected high-temperature sintering furnace assemblies according to temperature, atmosphere, and mechanical requirements.

Electronic Tube Components

Molybdenum tubes can be used in selected electronic and vacuum-device components requiring refractory-metal properties and dimensional stability.

Vacuum & Research Equipment

Custom molybdenum tubes and sleeves are available for vacuum systems, laboratory equipment, high-temperature experiments, and specialized research assemblies.

Custom Molybdenum Tube Dimensions

Molybdenum and molybdenum-alloy tubes can be supplied according to customer dimensional requirements.

Please specify:

OD — Outer Diameter
ID — Inner Diameter
WT — Wall Thickness
L — Overall Length

Additional dimensional requirements may include:

• OD tolerance
• ID tolerance
• Wall-thickness tolerance
• Length tolerance
• Concentricity
• Straightness
• Roundness
• Surface roughness
• End-face geometry
• Chamfer
• Thread or other machined features

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