SPARK SGHYZ Ultra-High Temperature Golden Electric Heating Alloy Wire
SPARK SGHYZ is a flagship high-performance FeCrAl electric heating alloy independently developed by Beijing Shougang Gitane New Materials Corporation. Featuring a distinctive golden oxidized surface, it delivers a maximum continuous service temperature of 1400°C, making it one of the few domestically developed electric heating alloy grades breaking through the 1350°C temperature barrier with full independent intellectual property rights.
Engineered for global mid-to-high end industrial customers with stringent requirements for high-temperature stability, service life and operational reliability, SGHYZ serves as a reliable alternative to imported premium electric heating alloys. It is widely deployed in cutting-edge industrial sectors including photovoltaic semiconductor manufacturing, high-end glass production, clean energy storage, and low-NOx combustion systems.
As the top-tier product in the SPARK high-performance electric heating alloy portfolio, SGHYZ has been validated through long-term industrial operations from composition design to production processes. It addresses common industry pain points of conventional FeCrAl alloys above 1300°C, such as rapid oxidation, deformation and sagging, and sharp service life decline. The alloy maintains stable resistance and structural integrity under extreme high-temperature conditions, helping customers significantly reduce total lifecycle costs and production downtime.
Core Performance Advantages
1、1400°C Ultra-High Temperature Resistance
Through optimized Cr-Al composition and rare earth micro-alloying, SGHYZ achieves greatly enhanced high-temperature structural stability, with a maximum continuous service temperature of 1400°C and a melting point of approximately 1500°C. It maintains stable electrical resistance and mechanical strength in ultra-high temperature furnaces and semiconductor diffusion furnaces, avoiding rapid embrittlement and failure common in conventional grades. It is the preferred material for heating applications above 1350°C.
2、Excellent High-Temperature Oxidation Resistance
At elevated temperatures, SGHYZ rapidly forms a dense, well-adhered alumina protective layer on the surface, effectively blocking oxygen diffusion into the matrix and slowing down oxidation wear. In long-term isothermal tests at 1050°C, SGHYZ shows significantly lower oxidation weight gain than conventional high-temperature grades such as HRE and 0Cr21Al6Nb. For ultra-fine fiber diameters below 0.02mm, its oxidation weight gain remains below 10% after 200 hours at 1050°C, far exceeding the industry average, making it ideal for open industrial furnaces and continuous heat production lines.
3、High Resistivity and Energy Efficiency
SGHYZ features higher room-temperature resistivity, reaching over 1.45 Ω·mm²/m at 20°C, outperforming traditional general-purpose grades like 0Cr25Al5. For a given power rating, higher resistivity allows more compact heating element design and reduces material consumption, enabling more compact furnace structures. Its higher electro-thermal conversion efficiency also reduces energy consumption, cutting both equipment manufacturing costs and long-term operational expenses.
4、Outstanding High-Temperature Deformation and Sagging Resistance
To address the common issue of large-diameter elements sagging and deforming at high temperatures, SGHYZ is optimized in composition and manufacturing process to deliver significantly improved high-temperature creep resistance. In sagging tests at 1300°C over extended periods, SGHYZ exhibits much lower deflection than comparable high-temperature alloys. Large-diameter wires maintain their shape after long-term service, reducing short circuits, local overheating and safety risks, and greatly lowering maintenance frequency.
5、Extended Service Life and Reduced Maintenance Costs
Rapid life cycle testing (on-off power cycles until fracture) shows that SGHYZ achieves far longer cycle life than traditional high-temperature electric heating alloys above 1300°C. In real continuous industrial operations, its service life can reach 1.5 times that of conventional high-temperature grades, significantly extending replacement intervals and reducing production downtime for element replacement — especially valuable for continuous manufacturing industries such as photovoltaics and glass production.
Product Specifications and Technical Parameters
SGHYZ golden electric heating alloy is typically supplied in oxidized coil form, and is also available in bright finish, spool-wound wire, ribbon and bar form to accommodate different element fabrication processes.
Golden diameter range: Wire diameter from 1.2mm to 50mm; custom sizes available
Key physical parameters:
- Maximum continuous service temperature: 1400°C
- Resistivity at 20°C: ≥1.45 Ω·mm²/m
- Density: approx. 7.1 g/cm³
- Melting point: approx. 1500°C
- Tensile strength: ≥750 MPa
- Elongation at break: ≥16%
- Thermal conductivity at 20°C: approx. 13 W/(m·K)
SGHYZ allows a higher surface load rating at equivalent furnace temperatures, supporting compact, high-power-density furnace designs and meeting the trend toward smaller, more efficient high-end equipment.
Key Applications and Customer Value
1、Photovoltaic and Semiconductor Wafer Heat Treatment
In diffusion furnaces, oxidation furnaces and annealing furnaces for monocrystalline and polycrystalline silicon, temperature uniformity and stability directly determine wafer yield. SGHYZ operates stably at 1200–1400°C with minimal temperature fluctuation, and produces no volatile contaminants or oxide scale spallation at high temperatures that could contaminate wafers. It is perfectly suited for high-precision heat treatment of 12-inch large wafers and third-generation semiconductor wafers, and has been adopted as a core heating material by leading photovoltaic manufacturers worldwide.
2、High-End Glass Manufacturing Heat Treatment
Annealing, tempering and bending processes for automotive glass, display panel glass and specialty optical glass impose strict requirements on heating element cleanliness and temperature uniformity. The dense, stable oxide film on SGHYZ golden wire prevents dust spallation at high temperatures, preserving the optical quality and surface precision of finished glass. Its extended service life also reduces furnace downtime for wire replacement, greatly improving production continuity and yield.
3、Clean Heating and Energy Storage Systems
In off-peak thermal energy storage and industrial waste heat recovery systems, heating elements undergo frequent temperature cycling and sustained high-temperature loads. SGHYZ’s excellent thermal shock resistance and fatigue resistance withstand multiple daily temperature cycles in energy storage applications, improving full-lifecycle reliability and reducing operating and maintenance costs, supporting clean urban heating and industrial energy efficiency and decarbonization goals.
4、Low-NOx Combustion High-Performance Fiber Burners
In response to tightening global emission standards, SGHYZ can be drawn into ultra-fine metal fibers below 0.02mm for metal fiber burners, delivering uniform heating and clean combustion that significantly reduces NOx emissions. Its outstanding high-temperature oxidation resistance ensures long burner life in high-temperature flue gas environments, making it a core foundational material for low-NOx combustion equipment.
5、Specialty Industrial Furnaces and High-End Equipment
SGHYZ is widely used in premium muffle furnaces, controlled atmosphere furnaces, bogie hearth heat treatment furnaces and laboratory furnaces. It is especially suited for sectors with extremely high demands for heating precision and reliability, such as aerospace and advanced materials R&D, serving as a full substitute for imported premium grades and supporting domestic self-reliance and supply chain security for high-end heating materials.
Why Choose SPARK SGHYZ Electric Heating Alloy
SPARK is the core electric heating alloy brand of Shougang Gitane, with over 60 years of industry heritage. As a Beijing Famous Trademark, SPARK products are renowned both domestically and internationally.
- Proprietary technology at internationally advanced level: Formerly Beijing Steel Wire Plant founded in 1956, Shougang Gitane is one of the founders of China’s electric heating alloy industry. SGHYZ is an in-house R&D achievement that fills the domestic gap in electric heating alloys above 1350°C. Its technology has been authoritatively assessed as internationally advanced, with full independent intellectual property rights.
- Strict quality control and global compliance: Full implementation of ISO 9001 quality management, ISO 14001 environmental management and ISO 45001 occupational health and safety management systems. Products pass EU RoHS and REACH testing, with consistent batch-to-batch quality meeting the compliance and quality requirements of global high-end customers.
- Custom solutions and worldwide technical support: We provide material selection guidance, element design consultation and custom manufacturing tailored to customer operating conditions. Our technical service network covers major industrial regions across Europe, the Americas and Asia, delivering responsive technical support and after-sales service.
- Reliable delivery and cost-effective import substitution: Backed by our modern production base in Beijing, we ensure stable lead times and sufficient production capacity. With performance matching top international electric heating alloy brands, SGHYZ helps customers substantially reduce procurement costs and supply chain risks, delivering a high-value domestic alternative to imported premium materials.
SPARK SGHYZ golden electric heating alloy wire delivers ultra-high temperature capability, extended service life and exceptional reliability as a core material solution for global high-end industrial heating applications. Whether you are a photovoltaic equipment manufacturer, glass processor, energy storage system integrator or high-end industrial furnace builder, we provide professional material solutions to help you improve equipment performance and reduce total lifecycle costs.