SC Type SiC Heating Elements

SC silicon carbide heating elements are specially structured SiC heating components with precision-machined spiral grooves on the surface of a uniform-diameter rod. This unique design significantly increases the heating surface area under the same diameter and length, resulting in higher surface power density and superior thermal radiation efficiency.

Manufactured from high-purity green silicon carbide through recrystallization sintering at over 2200℃, the spiral section is integrally formed with the rod body, ensuring high structural strength and no risk of delamination. Widely used in precision heat treatment, semiconductor manufacturing, glass melting, and various laboratory high-temperature equipment.

Technical Parameter

SC(single spiral) type heating elements

SCR(double spiral) type heating elements

OD: Outer Diameter (mm)

HZ: Hot Zone Length (mm)

CZ: Cold Zone Length (mm)

OL: Overall Length (mm)

Resistance: Ω

Specifications 

Structural Feature of SC Type SiC Heating Elements

1.Spiral Groove Surface

Precision-machined spiral groove structure significantly increases heating area and improves thermal radiation efficiency.

2. Integral Formation

Threaded section integrally sintered with the rod body, no risk of coating peeling, ensuring structural reliability.

3. Uniform Diameter

Consistent diameter between cold ends and threaded section allows uniform openings for easy replacement.

4. Customizable Thread Parameters

Thread pitch, depth, and threaded zone length can be flexibly customized based on process requirements.

Key Advantages 

☆ High surface power density: SC structure increases heating area, achieving 1.5-2 times the surface load of standard products

☆ Rapid heating: Higher power output per unit length for fast thermal response

☆ Excellent thermal efficiency: Enhanced thermal radiation characteristics for higher energy utilization

☆ Controllable temperature profile: Flexible SC distribution enables localized heating or specialized temperature curves

☆ Reliable structure: Integral forming eliminates coating peeling risk for long service life

☆ Easy installation: Uniform diameter design allows same installation method as standard SiC rods with no additional modifications

Applications

SC Design Selection Guide 

Installation Guidelines

· Furnace hole diameter should be 1.4-1.6 times the element diameter to allow thermal expansion

· Avoid impact on spiral area during installation to prevent local damage

· Clamps should grip the smooth cold end surface, never on the spiral section

· When multiple elements are connected in parallel, resistance matching within 10% deviation is recommended

Operating Precautions

· Due to higher surface load on spiral section, gradual temperature ramping is recommended for initial use

· Regularly inspect spiral area for abnormal discoloration or localized overheating

· Avoid prolonged use in reducing atmospheres to prevent SiC decomposition

Customization Services

We support non-standard customization based on drawings or parameters to meet various special operating conditions:

For quotation or technical support, please provide:

· Diameter

· Spiral zone length

· Cold end length

· Spiral pitch and depth

· Resistance value

· Operating temperature and atmosphere

· Drawings or special requirements

Why choose SC Type?

Equipment & Inspection

Note: Our silicon carbide heating elements undergo three rigorous quality inspections before being approved for shipment.

Packing&Transport

HHSIC Frequently Asked Questions 

1. What are your factory's strengths?

· Established in 2004 – Nearly 20 years of industry experience

· Modern production lines – Automated equipment with strict process control

· ISO9001 certified – Quality management throughout every stage

· In-house R&D team – Continuous development of new materials and custom designs

2. How do you ensure product quality?

We implement rigorous quality control at every step:

· All incoming raw materials are inspected

· Sintering processes are monitored in real time

· Every element undergoes resistance testing, visual inspection, and dimensional verification

· Each batch is traceable with complete test records

3. Is there a minimum order quantity?

No. Most standard models have no MOQ – you can order just one piece. We encourage trial orders before moving to larger volumes.

4. What are your typical lead times?

· Standard products: 7-10 days

· Custom products: 15-30 days (depending on complexity)

Expedited processing is available for urgent requirements.

5. How do you handle shipping?

Shipping is arranged based on order size and customer location:

· Small quantities: Sent via DHL, FedEx, or UPS for fast delivery

· Large orders or complete furnaces: Shipped by sea or air freight, with the most cost-effective route confirmed in advance

6. Where do you export?

We ship to over 50 countries across Europe, the Americas, Southeast Asia, the Middle East, and Africa. Available trade terms include EXW, FOB, CIF, and DDP.

7. What is your warranty policy?

· Heating elements (consumables): If manufacturing defects (cracks, incorrect dimensions, abnormal resistance) are found within 30 days of receipt, contact us for replacement. Normal wear from use is not covered.

· Lifetime technical support is always available.

8. Do you provide technical support?

Yes. Our engineering team offers:

· Installation guidance and operation training

· Troubleshooting and maintenance recommendations

· Full technical documentation for OEM clients

9. Can I get samples?

Yes. Samples of selected models are available free of charge; you only pay the shipping cost. This is the best way to verify performance and compatibility before placing a bulk order.