SiC Heating Elements
Henan Lasting supplies SiC heating elements and silicon carbide heater rods for overseas furnace builders, kiln operators and buyers comparing furnace element suppliers.
Use this page to narrow the product direction, then email info@hnlasting.com with the operating parameters so Henan Lasting can review the specification.
Recommended Products
SiC Heating Elements
DB type silicon carbide heating elements for industrial furnace replacement, with DB vs ED identification, dimensions, furnace fit, resistance and RFQ guidance.
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SiC Heating Elements
ED type SiC heating elements for tunnel kilns, roller kilns, glass kilns, vacuum furnaces and smelting furnace heating systems.
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SiC Heating Elements
Type U silicon carbide heating elements for single-ended furnace wiring, with dimensions, resistance matching, price scope and replacement RFQ guidance.
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SiC Heating Elements
W type silicon carbide rod heaters for furnace replacement projects, covering SiC rod dimensions, leg spacing, phase resistance, atmosphere and RFQ data.
View detailsSiC heating elements are used in tunnel kilns, roller kilns, glass furnaces, vacuum furnaces, smelting furnaces, experimental furnaces and other high-temperature electric heating equipment.
Buyers searching for SiC heating element suppliers usually need more than a company list. A useful supplier comparison should show whether the product range, technical data and RFQ process can support the real furnace layout, electrical system and replacement evidence.
| Supplier comparison point | What buyers should verify | Henan Lasting resource |
|---|---|---|
| Product range | DB, ED, H, SG, SGR, U and W type SiC elements, plus installation accessories where required. | SiC Heating Elements |
| Technical data | Element shape, diameter, hot zone, cold end, resistance, furnace temperature, atmosphere and surface load. | Technical Documents |
| Replacement review | Whether drawings, old element photos, terminal photos and circuit information can be reviewed before the specification is confirmed. | Resistance Measurement Guide |
| Quotation scope | Whether each quote uses the same dimensions, electrical data, quantity, spare requirement, accessories and destination details. | RFQ Form |
Send the completed SiC heating element RFQ or email info@hnlasting.com with drawings and photos when the element type is uncertain.
Many overseas buyers search for silicon carbide heating element, silicon carbide heating rod, SiC rod or silicon carbide heater when they are comparing replacement options for an industrial furnace. The useful first step is to translate the search term into a furnace-specific selection matrix.
| Buyer question | What to check | Relevant page |
|---|---|---|
| Which SiC element shape fits the furnace? | Straight DB or ED rod, U type, W type, SG, SGR or another custom layout. | SiC Heating Elements |
| Is the old part a straight silicon carbide heating rod? | Compare diameter, hot zone length, cold end length, total length and terminal space. | ED Type SiC Heating Elements |
| Does one-side wiring or a compact chamber need a bent element? | Check leg spacing, element bend, wiring side, surface load and installation clearance. | W Type Silicon Carbide Rod Heaters |
| What furnace data affects selection? | Working temperature, atmosphere, heated material, duty cycle, element spacing and circuit grouping. | RFQ form |
These SiC heating element parameters help overseas buyers review technical limits directly on the page before requesting a quote.
| Parameter | Technical reference | Buyer note |
|---|---|---|
| Element types | DH, DL, U, CU, M, W, SG, SGR, UX, DB | Use the closest shape when sending drawings or replacement photos. |
| Rod diameter range | 8mm-54mm | The maximum listed SiC rod length is 4300mm. |
| SG and SGR size limit | Maximum diameter 75mm, maximum length 1000mm | Useful for single-spiral and double-spiral furnace designs. |
| Maximum operation temperature | Up to 1600℃ in clean dry air | Other atmospheres may require lower service temperature. |
| Recommended surface loading | 3-8 W/cm² | Lower surface loading normally supports longer service life. |
| Resistance aging | Service life is functionally over when resistance reaches 3 times the original value | Keep replacement records for later resistance matching. |
The following installation and electrical rules are useful for furnace builders and replacement projects.
| Item | Recommendation | Why it matters |
|---|---|---|
| Element center to element center | Minimum 2 times element diameter; 2.5-3 times is recommended | Helps reduce local overheating and short-circuit risk. |
| Element center to furnace wall | At least 1.5 times element diameter | Leaves space for heat radiation and installation tolerance. |
| Element center to heated product | At least 2 times element diameter | Helps avoid direct obstruction and uneven radiation. |
| Preferred circuit connection | Parallel connection is preferred where possible | Small resistance changes tend to balance during use. |
| Series connection | Up to 4 elements when resistance is well matched; limit to 2 above 1400℃ | Reduces overload risk when resistance changes over time. |
| Resistance matching | Series: +/-5%; parallel: +/-10% | Useful when grouping elements for replacement and maintenance. |
| Voltage reserve | Usually 50%-100% above the voltage required by new elements | Allows the power supply to compensate for resistance aging. |
Furnace atmosphere is one of the strongest service-life factors for SiC heating elements. The table below summarizes common operating guidance for typical atmospheres.
| Atmosphere | Effect on SiC elements | Suggested operating response |
|---|---|---|
| Vapor and moisture | Service life may be about 20% shorter than in dry air. | Dry new or long-idle furnaces at low temperature before heating. |
| Nitrogen | Above 1400℃, nitrogen can react with SiC to form silicon nitride and make elements fragile. | Keep furnace temperature below 1300℃ where possible and use low surface loading. |
| Hydrogen | Mechanical strength decreases when element temperature exceeds 1350℃, with life affected by moisture. | Operate below 1300℃ and keep surface loading below 5 W/cm². |
| Ammonia | Similar risk pattern to hydrogen and nitrogen. | Operate below 1300℃ and keep surface loading below 5 W/cm². |
| Vacuum | A SiO2 protective film cannot form in high vacuum, and SiC may decompose. | Use above 0.13Pa pressure and below 1100℃ furnace temperature. |
| Sulfur | Above 1300℃, the element surface may corrode and resistance may rise rapidly. | Keep element temperature below 1300℃. |
A reliable SiC heating element quote should be compared by specification, not only by unit price or a generic product name. Two quotations can both say "silicon carbide heating element" while covering different shapes, resistance values, hot-zone lengths, accessories and furnace conditions.
| Quote item | Why it changes the offer | RFQ evidence to send |
|---|---|---|
| Element shape and size | DB, ED, U, W, SG and SGR elements use different structures and dimensions. | Photos, drawings, diameter, hot zone, cold end, total length and leg spacing. |
| Electrical data | Resistance, voltage, power and connection method affect matching and replacement scope. | Old order data, voltage/current records, resistance at operating condition and circuit group. |
| Furnace condition | Temperature, atmosphere and surface load affect material review and service-life expectation. | Furnace type, process temperature, atmosphere, heated material and duty cycle. |
| Accessories and quantity | Clamps, conductive connection tape, spare quantity and packing scope can change the final quotation. | Terminal photos, accessory needs, quantity, spare set request and destination country. |
Use the RFQ form or email info@hnlasting.com when the replacement requires drawings, photos or electrical records.
Many overseas buyers search for Starbar heating elements or Globar heating elements when an installed SiC element needs replacement. Starbar and Globar are third-party product names. Henan Lasting is not affiliated with those brands, but can review a replacement by the installed element's physical and electrical specification.
A search for generic Globar elements does not establish a drop-in replacement. The SiC material name or a similar-looking rod is not enough to confirm interchangeability. Record the original grade or model when known, and review mounting dimensions, terminal layout, electrical loading and furnace atmosphere together. Read the Globar terminology and replacement FAQ before preparing an inquiry.
Do not convert a brand or legacy type name directly into a purchase order. First identify the element shape and collect the measurable data below; the final match may be a straight DB or ED rod, a U or W type element, an SG or SGR spiral element, or a custom layout.
| Replacement evidence | What buyers should record | Review resource |
|---|---|---|
| Old model and element shape | Brand/model marking, straight rod or tube, U/W legs, spiral cut, terminal count and wiring side. | SiC Element Types Guide |
| Installed dimensions | Diameter, hot zone length, cold end length, overall length, leg spacing and furnace-wall clearance. | SiC Product Types |
| Electrical match | Original resistance, operating voltage and current, power, series or parallel grouping and transformer range. | Resistance Measurement Guide |
| Furnace condition | Working temperature, atmosphere, heated material, duty cycle, element spacing and failure history. | Furnace Atmosphere Checklist |
| Terminal accessories | Cold-end coating, clamp, conductive tape or braid, terminal photos and required spare quantity. | Heating Element Accessories |
Send the old element drawing, installed photos and the completed data through the SiC heating element RFQ or Contact Henan Lasting. Mark unknown fields as unknown instead of guessing a Starbar or Globar equivalent.
For custom furnace heating projects, share drawings, operating temperature, target resistance, quantity and application details so the technical team can review the specification.
FAQ
Please provide element type, diameter, hot zone length, cold end length, resistance, furnace temperature, quantity and application.
Compare the available element shapes, published technical data, ability to review drawings and replacement photos, resistance and furnace-condition checks, accessory scope, and whether each quotation uses the same dimensions, electrical data and quantity.
Price is affected by element shape, diameter, hot zone length, cold end length, resistance, voltage, power, quantity, furnace atmosphere, accessories and whether drawings or custom production review are needed.
Yes. Different SiC element shapes can match tunnel kilns, roller kilns, glass kilns and other industrial furnace layouts.
For series connection, keep resistance within +/-5%; for parallel connection, keep it within +/-10%.
Recommended surface loading is 3-8 W/cm² for furnace design when longer service life is the target.
Henan Lasting is not affiliated with the Starbar or Globar brands, but supplies silicon carbide heating elements for specification review. A generic Globar search or similar rod shape does not establish a drop-in replacement. Send the original grade or model, dimensions, terminal layout, resistance, electrical loading and furnace conditions for review before ordering.
Request A Quote
For faster review, include element type, diameter, hot zone length, cold end length, resistance, furnace temperature, quantity and application.
