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SG-Type Silicon Carbide Heating Element
SG-Silicon Carbide Heating Element
SG-Silicon Carbide Heating Element

SG-Type Silicon Carbide Heating Element

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SG-Type SiC Heating Element – Product Details

SG-type silicon carbide heating elements resist high temperatures (up to 1625°C), corrosion, and thermal shock. They provide consistent performance in demanding industrial heating systems, leading to widespread use in electronics and semiconductor manufacturing, high-temperature processing of new energy battery materials, and various high-temperature industrial kilns.

  • Product: SG-type Silicon Carbide Heating Element
  • Material: High-purity green α-SiC (hexagonal silicon carbide)
  • Voltage: 110-480V
  • Density: 2.65-2.96g/cm3
  • Service Life: Up to 2200 hours (continuous operation under rated conditions)
  • Diameter: 8-85 mm (cold end / hot end)

 

5D-Materials SG-Type Silicon Carbide Rod -Advantages

  1. High Density: Proprietary process, density up to 2.96 g/cm³, excellent stability.
  2. High-Temperature Resistance: Withstands temperatures up to 1625°C, enabling fast heating and high thermal efficiency.
  3. High Mechanical Strength: Bending strength 100–120 MPa, shock and impact resistant, no deformation at high temperature.
  4. Corrosion/Oxidation Resistance: High-purity SiC material, resistant to acid, alkali, and oxidation, suitable for harsh furnace environments.
  5. Long Service Life: Service life up to 2200 hours, low maintenance cost.
  6. Multiple Models: SG, SGR, U, W, M, ED/HD, and more, compatible with various industrial furnaces.
  7. Energy-Efficient & Eco-Friendly：Uniform heating, low energy consumption, meets green industrial standards.
  8. International Standards：ISO-certified factory, annual capacity 500 tons.
  9. Export-Grade Packaging: Cardboard box + foam liner + reinforced wooden case for safer shipping.

 

SG-type Silicon Carbide Heating Element - Applications

  1. Ceramics:  Firing zones in shuttle, tunnel, and roller hearth kilns for technical ceramics, sanitaryware, and electrical porcelain.
  2. Metallurgy: Reduction, dewaxing, pre-sintering, and sintering in resistance or pusher furnaces for Fe/Cu-based PM parts and magnetic materials.
  3. Glass: Auxiliary heating and insulation in tank furnaces for glass and fiberglass production, matching radiant heating requirements.
  4. Laboratory: Muffle and tube furnaces with rapid heating, high temperature precision, and versatility for R&D applications.
  5. Semiconductor: Diffusion furnace elements; preheating/purifying quartz crucibles; high-temperature treatment of wafer carriers (graphite); PV silicon ingot/wafer heat treatment.
  6. Other Fields: Solution treatment of Ti/alloys (protective atmosphere); calcination of phosphors/catalysts; R&D equipment for nuclear fuel materials.

 

Definition of SG-type Silicon Carbide Heating Element

The SG-type silicon carbide (SiC) heating element is manufactured via high-temperature recrystallization, utilizing SiC's semiconductor properties to efficiently convert electrical energy into radiant heat . Its design incorporates a uniform-diameter rod with a localized spiral groove, creating distinct cold-end and hot-zone functional areas for high-temperature industrial furnaces in oxidizing or inert atmospheres .

A key characteristic is its unique resistance-temperature relationship: a Negative Temperature Coefficient (NTC)​ below 800°C (resistance decreases with temperature) and a Positive Temperature Coefficient (PTC)​ above 800°C (resistance increases with temperature) . The maximum service temperature is 1500°C in air, reaching up to 1625°C in specific protective atmospheres. These elements are widely used in industries including ceramics, metallurgy, glass manufacturing, and scientific research.

 

SG-Type Silicon Carbide Rod - Product Structure Diagram

Product Structure Explanation:

  • OD：Outer Diameter (mm)
  • HZ：Hot Zone Length (mm)
  • CZ：Cold Zone Length (mm)
  • OL：Overall Length (mm)
  • R：Ω (Customizable)

Example: SG-type, Outer Diameter=14mm, Overall Length=600mm, Cold End=200mm, Hot Zone=200mm, Resistance=2.11Ω, denoted as: SG-600*200*14

Note: Contact us for other specifications or customization.

 

SG-Type SiC Heating Rod Installation Method

  1. Inspection: Check for cracks before installation. Ensure no structural issues in the furnace affecting rod placement.
  2. Installation: Vertical or horizontal installation. Self-supporting at high temp, but furnace must allow free thermal expansion.
  3. Fixing: Install ceramic chucks/clamps on cold ends, ensure they are outside furnace to prevent overheating.
  4. Power Connection: Use flat aluminum braid and spring clamps to connect to 110–480V power supply, matching resistance correctly.
  5. Heating Debugging: Gradually increase to working temp to avoid thermal shock. Enter normal load after stable furnace temp.
  6. Regular Maintenance: Check aluminum-coated connectors and clamps for looseness or corrosion.
  7. Note: Installation should be performed by professionals. Contact us for detailed manuals.

 

SG-Type Heating Scenario Design Recommendations

SG-Type SiC Heating Element Configuration & Furnace Matching:

  • Hot Zone Length: Match the furnace chamber's effective heating width. Prevent contact with furnace walls to avoid ablation.
  • Cold Zone Length: Furnace wall thickness + 50–150 mm external connection allowance. This prevents end overheating if too short and avoids an extended non‑heating zone if too long.
  • Furnace Port Size: Recommended port diameter is 1.4–1.6 times the cold end diameter. Seal with ceramic fiber gaskets to accommodate thermal expansion and prevent stress damage.
  • Spacing Design: Maintain a minimum distance of ≥3× element OD from furnace charge or walls. Center-to-center spacing between adjacent SiC rods should be ≥4× OD. This reduces radiation shielding and improves temperature uniformity.
  • Temperature Control System: An intelligent system is recommended for precise regulation, suppressing thermal shock and extending service life.
  • Atmosphere: Optimal in oxidizing atmospheres. For reducing, carburizing, or hydrogen-rich conditions, reduce operating temperature or implement protective measures. Contact us for specific application guidance.

 

SG-Type Silicon Carbide Rod - Product Size Chart

Number Size Hot Zone surface area Nominal loading values*
External Diameter Hot Zone Length Cold End Length Overall Length
mm mm mm mm cm² Volts Watts Ohms
SG-600*200*14 14 200 200 600 87 59 1650 2.11
SG-700*200*14 200 250 700 87 60 1680 2.14
SG-650*250*14 250 200 650 109 71 1990 2.53
SG-700*250*14 250 250 750 109 73 2040 2.61
SG-800*300*14 300 250 800 131 85 2380 3.04
SG-600*200*14 200 250 700 100 58 1970 1.71
SG-600*200*14 250 200 650 125 69 2350 2.03
SG-600*200*14 250 250 750 125 70 2380 2.06
SG-600*200*14 250 300 850 125 71 2410 2.09
SG-600*200*14 300 200 700 150 81 2750 2.39
SG-800*300*16 16 300 250 800 150 82 2790 2.41
SG-900*300*16 300 300 900 150 83 2820 2.44
SG-850*350*16 350 250 850 175 94 3200 2.76
SG-950*350*16 350 300 950 175 95 3230 2.79
SG-1100*300*20 20 300 400 1100 188 84 3440 2.05
SG-1150*350*20 350 400 1150 219 97 3980 2.36
SG-1200*400*20 400 400 1200 251 109 4470 2.66
SG-1250*450*20 450 400 1250 282 121 4960 2.95
SG-1100*300*25 25 300 400 1100 235 84 4120 1.71
SG-1300*300*25 300 500 1300 235 86 4210 1.76
SG-1200*400*25 400 400 1200 314 110 5390 2.24
SG-1300*500*25 500 400 1300 392 135 6620 2.75
SG-1100*300*30 30 300 400 1100 282 79 4980 1.25
SG-1300*300*30 300 500 1300 282 80 5040 1.27
SG-1200*400*30 400 400 1200 376 103 6490 1.63
SG-1400*400*30 400 500 1400 376 104 6550 1.65
SG-1300*500*30 500 400 1300 471 127 8000 2.02
SG-1400*600*30 600 400 1400 565 151 9510 2.4
SG-1200*400*35 35 400 400 1200 439 101 7680 1.33
SG-1400*400*35 400 500 1400 439 102 7750 1.34
SG-1300*500*35 500 400 1300 549 124 9420 1.63
SG-1500*500*35 500 500 1500 549 125 9500 1.64
SG-1400*600*35 600 400 1400 659 148 11200 1.96
SG-1500*700*35 700 400 1500 769 171 13000 2.25
SG-1300*500*40 40 500 400 1300 628 116 10700 1.26
SG-1500*500*40 500 500 1500 628 117 10800 1.27
SG-1400*600*40 600 400 1400 753 138 12700 1.5
SG-1500*600*40 600 450 1500 753 139 12800 1.51
SG-1500*700*40 700 400 1500 879 161 14800 1.75
SG-1600*700*45 45 700 450 1600 989 149 16800 1.32
SG-1600*800*45 800 400 1600 1130 168 19000 1.49

Nominal load values measured at 1000°C in open air. Convert to current, tolerance is ±15% of center value.

Use the table above to select the rod type suitable for your application. Contact us for free samples if interested.

Metallized Width

Outside diameter (mm) Metallized Length (mm)
ø14 to 16 (30)
ø20 or more (50)

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