Silicon carbide (SiC) heating elements are the workhorse of industrial high-temperature furnaces up to roughly…
U Type MoSi2 heating elements
The U shaped elements are most frequently used suspended with the bottom of the “U” down. The element consists of two cold ends (Lu) and a U-shaped hot section (Le). The cold ends are twice the diameter of the hot section and are attached by a weld. The extremities of the cold ends are metallized with aluminum to provide a low-resince contact surface to which the electrical connections are made with flat braided aluminum straps.
The two-shank element is available in the following hot zone/cold end diameters: 3/6, 4/9, 6/12, 9/18 and 12/24.
These elements are available in two grades: MS1700 for element temperatures up to 1700 deg C and MS1800 for element temperatures up to 1800 deg C.
From Sep 16, 2011, we have got the MS 1900 MoSi2 heating elements successfully thru the research for 10 years. The max temperature can up to 1850 deg C.
MOSI2 Heating Elements are described by:
Grade: 1700, 1800 or 1900
Diameter: D1/D2, mm/mm
Heated Length: Le*, in. or mm
Terminal length: Lu*, in. or mm
Shank Spacing: A*, in. or mm
Specify Le, Lu and A with the same units (e.g. all 3 as in. or mm).
Examples:
Grade 1800, D1=3mm, D2=6mm, Le=5.5in., Lu=5in., A=.98in.
Specify as: MOSI2, 18-3/6-5.5-5-0.98in.
Grade 1700, D1=6mm, D2=12mm, Le=300mm, Lu=250mm, A=50m
Specify as: MOSI2, 17-6/12-300-250-50mm
Examples of typical MoSi2 element configurations.
Customers of MoSi2 elements enjoy two key added benefits – first, unparalleled price and second, experienced engineering support. Anyone can sell MoSi2, but knowing how to design the system is where excels. MoSi2 systems must be engineered for customer to get the best performance and optimum service life. HeatingDriver engineers can assist in:
analyzing the relationship between the furnace temperature, element temperature and the element surface load selecting the element surface load according to the furnace construction, atmosphere and operating temperature
choosing the most suitable element size and style for your application.
Related guides
- W-type MoSi2 heating elements – low-roof and horizontal mounting.
- EQ1700U MoSi2 elements, EQ1800U and EQ1850U – temperature-grade selection.
- MoSi2 vs SiC – which material fits your furnace.
- Browse the full MoSi2 heating element range.
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 U-type MoSi2 heating element?
A U-type MoSi2 element is a single hairpin with two parallel cold ends (Lu) joined by a U-shaped hot section (Le); the cold ends are twice the diameter of the hot section and are joined by a weld.
What diameters are U-type elements available in?
U-type elements are available in hot zone/cold end diameters of 3/6, 4/9, 6/12, 9/18 and 12/24.
What temperature grades suit U-type elements?
U-type elements are supplied in EQ1700U (1700°C), EQ1800U (1800°C) and EQ1850U (1850°C) grades for 1700–1850°C operation.
What surface load do U-type MoSi2 elements use?
Typical MoSi2 surface load is 4–9 W/cm², selected according to furnace size and atmosphere.

