Molybdenum Disilicide Heating Elements

Updated guide: this page uses our older MS-series grade names (MS1700 / MS1800 / MS1900). Those grades are now the EQ-series (EQ1700U / EQ1800U / EQ1850U). For current grades, full specifications, atmosphere limits and a selection tool, read our MoSi2 Heating Elements: The Complete Guide.

molybdenum disilicide MoSi2 heating elements are for element temperatures up to 1850°C. MoSi2 heating elements are available as straight or bent elements in a wide range of shapes and sizes, all characterized by long life and consistent performance.

Seven grades for different applications

The program of MoSi2 heating elements includes seven grades with specific features for use in demanding applications and atmospheres, including nitrogen, hydrogen, vacuum and mixtures of endogas and reducing atmospheres.

All MoSi2 heating elements are characterized by good heat and electrical conductivity. They have low thermal expansion and withstand corrosion and oxidation.

Special design

In addition to MoSi2 elements in standard shapes and sizes we provide special designed MoSi2 elements according to customer needs, enabling an optimized element design for each particular application

MoSi2 heating elements are available as straight or bent elements in a wide range of sizes and shapes.

MS1700 — Good heat and electrical conductivity. Low thermal expansion. Withstand corrosion and oxidation. Max. temperature is 1700°C

MS1800 — Same core characteristics as MS 1700. Max. temperature is 1800°C

MS1900 — Same core characteristics as MS 1700, but has higher purity and a surface with better adhesion. Max. temperature is 1850°C

Useful element temperatures in various atmospheres, ºC

Grade	1700	1800	1900
Air	1700	1800	1850
Nitrogen	1600	1700	1800
Argon, Helium	1600	1700	1800
Hydrogen Temperature is dependent on dew point.	1100-1450	1100-1450	1100-1450
Nitrogen/Hydrogen 95/5%	1250-1600	1250-1600	1250-1600
Exogas (e.g. 10% CO², 5% CO, 15% H²)	1600	1700	1700
Endogas (e.g. 40% H², 20% CO)	1400	1450	1450
Cracked and partially burnt ammonia (~8%H² )	1400	1450	1400

Related guides

Why specify with HeatingDriver

Why specify with HeatingDriver — HeatingDriver is a manufacturer and exporter of MoSi2 (molybdenum disilicide) heating elements with nearly 20 years of experience. We supply EQ1700U / EQ1800U / EQ1850U grades for 1700–1850°C, free drawing review, custom sizes and shapes, and technical support for furnace builders worldwide. Browse our MoSi2 heating elements.

What is a molybdenum disilicide (MoSi2) heating element?

It is a ceramic-metallic heating element made of dense MoSi2 that reaches furnace temperatures up to 1850°C and is protected by a self-forming quartz layer.