Globar® heating elements

Globar® silicon carbide (SiC) heating elements offer exceptional electric heating capabilities for element temperatures up to 1,625°C (2,957°F). Available in a wide range of standard sizes and geometries, and customizable designs, these elements are tailored to meet the specific needs of various processes and equipment. Known for their high power, self-supporting structure, and ability to provide even, controlled heating, Globar® elements are a reliable choice. With diameters ranging from 10mm to 55mm, hot zones up to 4.2m, and overall lengths from 100mm to 6m, Kanthal is the world’s leading manufacturer of SiC heating elements.

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Glass Ceramics Automotive Battery Steel

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Globar® element grades

Grade	Description
Globar^® SD	Globar® SD silicon carbide heating elements are designed for use in high-temperature furnaces, operating up to 1,600°C (2,910°F). These elements are available in both single-rod and multi-leg designs, providing installation flexibility. Globar® SD elements are widely used in industries such as glass, ceramics, electronics, and metals due to their durability, easy installation, and cost-effectiveness.
Globar^® AS	Advanced structure silicon carbide (SiC) heating elements are designed to offer superior strength, reliability, and performance in high-temperature applications. Globar® AS elements are available in various forms and sizes, allowing easy upgrades without modifications to existing equipment. Their applications range from the aluminum and steel industries to glass, ceramics, and electronics.
Globar^® HD	Globar® HD Max silicon carbide heating elements are designed for high-tech applications and challenging environments. The thicker wall provides greater corrosion resistance, reduced risk of mechanical breakage, and an extended product lifetime of up to 50%.
Globar® Glass Seal	Globar® Glass Seal for silicon carbide heating elements is designed for the toughest operating conditions, particularly in corrosive atmospheres and environments with high water content. The seal provides enhanced temperature uniformity and is compatible with all Globar® elements, making it ideal for industries like glass, electronics, and precious metals.
Globar® SG and SR	Globar® SG and SR silicon carbide heating elements are advanced, high-performance solutions designed for demanding industrial applications. Made through a unique reaction-sintering process, these elements provide exceptional durability, oxidation resistance, and uniform heating across temperatures up to 1,600°C (2,910°F). Globar® SG elements feature a central hot zone with low-resistivity cold ends, while SR elements offer a single-end terminal design with a two-start helical cut, making them ideal for flexible installation in various furnace configurations.

Globar® element types

Type	Description
Rod element	Globar® elements are available in round-section rods or tubes, with diameters ranging from 10 mm to 55 mm. This is the most basic form of the elements, which can be installed either vertically or horizontally. Because the material remains rigid even at maximum operating temperatures, no special supports are required. Additionally, the elements can typically be replaced quickly, even while the furnace is hot, reducing downtime significantly.
Type U	Globar® SD multi-leg elements are composed of 2, 3, or 4 silicon carbide legs, made from the same material and using the same manufacturing process as standard SD elements. Each leg is divided into two distinct sections: a hot zone and a cold end. The legs within any given element are matched in resistance value to ensure an even distribution of load. These legs are connected using specially designed silicon carbide bridges, which bond the components into a monolithic structure of alpha silicon carbide. Unlike traditional joining methods such as cements or welds that might limit the temperature capabilities of the element, these bridges maintain the integrity of the final product. The bridges are not part of the hot zone and can be used as end supports if necessary. The Type U element, which has two legs, is a single-phase unit. Multiple Type U elements can be connected to form a balanced three-phase load if needed. The Type CU element is similar to the Type U but features a shortened bridge, making it ideal for applications where space is limited.
Globar® B	Globar® B silicon carbide heating elements are designed for easy installation and improved temperature control in industrial furnaces. They are ideal for lift-off roof arrangements, narrow channels, launders, feeders, and wide roofs or walls.
Globar® Float Glass	Globar® Float Glass silicon carbide heating elements are designed for use in float baths, primarily in the production of soda-lime flat glass for architectural, automotive, and solar-glass applications. These elements have a lifespan of up to 18 years and are available in special glazed quality to resist attacks from volatiles in the tin bath. Horizontal heaters can be replaced while the tin bath is operational, ensuring continuous function without interrupting production.
Globar® SG and SR	Globar® SG and SR silicon carbide heating elements are manufactured using a unique reaction-sintering process, resulting in a tough, oxidation-resistant material with controlled resistance and uniform heating. These high-performance elements have significantly lower porosity than conventional SiC elements, making them more resistant to atmospheric reactions and extending their lifespan. Suitable for temperatures ranging below 600°C (1,110°F) up to 1,600°C (2,910°F) in air or controlled atmospheres, they offer superior performance in both continuous and intermittent operations and can handle higher electrical loads than metallic elements.

Advanced structure silicon carbide heating elements Globar AS_B_ENG_LR.pdf (PDF document, 1 MB)

Silicon carbide heating elements Globar B_B_ENG_LR.pdf (PDF document, 653 kB)

Globar Glass Seal – longer lasting in the toughest conditions_PS_ENG_LR.pdf (PDF document, 620 kB)

Kanthal Globar HD Max_PS_ENG_LR.pdf (PDF document, 608 kB)

Silicon carbide heating elements Globar SD_B_ENG_LR.pdf (PDF document, 660 kB)

Kanthal Globar® SDA elements.pdf (PDF document, 997 kB)

Silicon carbide heating elements Globar SG and SR_B_ENG_LR.pdf (PDF document, 1.1 MB)

Case stories

A stronger connection

After making a number of custom-made modifications to its Globar® SiC heating elements, Kanthal was able to help Toyota Motor Manufacturing Poland increase the lifespan of its elements to an average of two years from seven months.

Can heating element choice improve furnace efficiency?

The choice of heating element has a significant impact on the overall energy efficiency of a furnace, but it is not the only factor. In fact, if other considerations are not taken into account, the savings achieved from an energy-efficient element can quickly disappear.

Reliable heating elements improve cathode production

Kanthal’s Globar® SiC (silicon carbide) heating elements have been specifically engineered for high-tech applications with tough conditions, such as cathode material production. The substrate’s unique microstructure makes it more reliable and ensures consistency in quality.

Globar® heating elements

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Globar® element grades

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Globar® element types

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Globar® element grades

Case stories

A stronger connection

Can heating element choice improve furnace efficiency?

Reliable heating elements improve cathode production