Heating element selection

Silicon Carbide (SiC) Heating Elements

SiC heating elements specified by furnace duty, element shape, hot-zone and cold-end dimensions, resistance, terminal arrangement, atmosphere and installation.

Request a Technical Quote Review Configuration

Product evidence

Product views and construction details.

Silicon carbide heating element shown during a controlled hot test — Element geometry and electrical data must be matched to the furnace circuit and operating environment.

Product configuration

Configuration overview

Application fit: Replacement and OEM resistance-heating duties in compatible industrial and laboratory furnaces after the furnace environment and electrical design are reviewed.
Temperature / cycle: Defined by the selected configuration and required working cycle. Working and maximum values must be confirmed separately.
Geometry: Shape, overall length, hot-zone length, cold-end length, diameter, terminal spacing, support position and furnace opening dimensions are required.
Atmosphere boundary: Furnace atmosphere, contamination, ventilation and operating cycle must be stated because element behaviour and the surrounding installation are application-dependent.
Heating / connection: Element resistance, grouping, connection method, transformer or controller relationship and allowable installation clearance must be matched to the furnace electrical design.

Select SiC elements as part of the furnace circuit

A silicon carbide heating element cannot be selected reliably from furnace temperature or a photograph alone. The element shape, heated section, cold ends, resistance, connections, support conditions and furnace atmosphere all belong to the same specification. Pyrocore uses the existing furnace data or the new furnace design as the starting point.

Element geometryStraight, U, W, L or another reviewed shape with a fully dimensioned sketch.

Electrical matchResistance, grouping, supply and the relationship to the transformer or controller.

Furnace dutyWorking temperature, cycle, atmosphere, load and contamination conditions.

InstallationOpenings, supports, terminal clearance, connectors and access for replacement.

Define every active and inactive length

State the overall element length, heated or hot-zone length, cold-end length and diameter. For bent elements, include centreline dimensions, leg spacing and bend orientation. Mark which portion sits inside the insulation, which portion faces the load and where the electrical connection is made.

Match resistance and grouping

Replacement inquiries should include the measured or documented element resistance and the number of elements in each controlled group. Also provide the furnace supply, transformer information where used, connection arrangement and controller output. Elements that fit physically can still be electrically incompatible.

Check the furnace atmosphere and cycle

Describe whether the furnace operates in air or another process environment, what materials are heated, whether binders or vapours are released and how often the furnace cycles. These conditions help define whether the proposed SiC element and surrounding installation are appropriate. No service-life promise should be inferred without the actual operating conditions.

Plan installation and replacement access

Element openings must allow the required clearance without creating unsupported spans or terminal interference. Show supports, insulation penetrations, terminal guards and the route for connectors. If replacing a broken set, photograph an intact element, the installed bank, the terminal area and the furnace nameplate or electrical drawing.

Send this SiC element specification

Element shape and dimensioned drawing
Hot-zone, cold-end and overall dimensions
Required resistance or existing resistance data
Quantity and electrical grouping
Furnace working temperature and cycle
Atmosphere, load and contamination information
Terminal, connector and installation photographs
Power supply and destination country

For a complete replacement-chamber project, include the information described on Box & Muffle Furnace Chambers.