When it comes to high-performance specialty alloys, Nilo46 stands out as a critical material for demanding industrial applications. As a professional enterprise dedicated to research, development, and manufacturing of high-purity metals and specialty alloys, Qingchuan New Materials (Zhengzhou) Co., Ltd. has established itself as a trusted Nilo46 alloy manufacturer and supplier in China. Our strategic location in Zhengzhou High-Tech Industrial Development Zone, combined with state-of-the-art production facilities, enables us to deliver superior Nilo46 products that meet the most stringent quality standards.

Understanding Nilo46 Alloy Composition and Properties
Nilo46 alloy, also known as Kovar alloy, is a nickel-cobalt ferrous alloy designed to have a coefficient of thermal expansion matching that of hard glass. This unique property makes it ideal for applications requiring precise dimensional stability under temperature variations. The alloy typically contains approximately 54% iron, 29% nickel, and 17% cobalt, with trace amounts of other elements to optimize its performance characteristics.
Our Nilo46 products exhibit excellent thermal expansion properties, making them indispensable for sealing applications where differential expansion between materials could cause failure. The alloy maintains its strength and ductility across a wide temperature range, from cryogenic conditions up to approximately 500°C (932°F). This thermal stability, combined with good oxidation resistance and workability, positions Nilo46 as a preferred material for numerous industrial sectors.
Comprehensive Nilo46 Product Range
As a leading Nilo46 company, we offer a complete range of products to meet diverse application requirements:
- Nilo46 alloy bars and rods: Precision manufactured to exacting standards for machining into custom components
- Nilo46 sheet and plate: Available in various thicknesses for fabrication of seals, frames, and other flat components
- Nilo46 wire: Ideal for spring applications and fine wire components requiring thermal stability
- Nilo46 tubing: Manufactured with consistent wall thickness for vacuum applications and fluid handling systems
- Custom Nilo46 components: Our experienced engineering team can produce complex shapes through precision casting or machining
Each product undergoes rigorous quality control measures, including chemical composition analysis, mechanical property testing, and dimensional inspection. Our advanced analytical capabilities ensure every batch of Nilo46 alloy meets or exceeds industry specifications.

Nilo46 Alloy Specifications
Our Nilo46 products conform to international standards including ASTM F15, DIN 17745, and MIL-I-23011. Key specifications include:
| Property | Specification |
|---|---|
| Nickel Content | 28.5-29.5% |
| Cobalt Content | 16.5-17.5% |
| Tensile Strength | ≥517 MPa (annealed) |
| Thermal Expansion (20-300°C) | ≈5.2×10⁻⁶/°C |
Diverse Applications of Nilo46 Alloy
The unique properties of Nilo46 make it indispensable across multiple industries:
1. Precision Casting for Aerospace Components
Our Nilo46 alloy plays a crucial role in manufacturing precision components for aviation and aerospace applications. The material’s ability to maintain dimensional stability under extreme temperature fluctuations makes it ideal for engine components, fuel system parts, and structural elements that must withstand both cryogenic conditions and high operating temperatures. The alloy’s excellent machinability allows for the production of complex shapes with tight tolerances required in aerospace engineering.
2. Medical Device Manufacturing
In the medical field, Nilo46’s biocompatibility combined with its thermal properties makes it valuable for producing artificial joints, dental implants, and surgical instruments. The alloy’s resistance to corrosion in bodily fluids ensures long-term reliability of implanted devices, while its thermal expansion matching glass makes it perfect for hermetic seals in medical electronics and diagnostic equipment. Our precision casting capabilities enable the production of medical components with complex geometries and surface finishes required for optimal performance.
3. Electronics and Vacuum Applications
The electronics industry relies heavily on Nilo46 for manufacturing hermetic seals in vacuum tubes, X-ray tubes, and microwave devices. The alloy’s matched thermal expansion with borosilicate glass prevents seal failure during thermal cycling, ensuring reliable operation of sensitive electronic components. Additionally, Nilo46’s low vapor pressure makes it suitable for vacuum applications where outgassing could contaminate sensitive processes or degrade performance over time.
4. Automotive and Marine Industries
In automotive applications, Nilo46 components find use in sensors, actuators, and fuel system parts that require precise operation across wide temperature ranges. The marine industry benefits from the alloy’s corrosion resistance in saltwater environments, using it for underwater connectors, sonar components, and navigation equipment. Our Nilo46 products help these industries achieve reliable performance in challenging operating conditions.
Why Choose Qingchuan as Your Nilo46 Supplier?
As a professional Nilo46 manufacturer, we distinguish ourselves through several key advantages:
- Advanced Production Facilities: Our modern workshop in Zhengzhou High-Tech Zone houses state-of-the-art equipment for melting, casting, forging, and precision machining of Nilo46 alloy.
- Comprehensive Quality Control: From raw material inspection to final product testing, we implement strict quality assurance protocols at every stage of manufacturing.
- Customization Capabilities: Our experienced engineering team can develop custom Nilo46 solutions tailored to your specific application requirements.
- Reliable Supply Chain:
- As a Nilo46批发厂家 (Nilo46 wholesale manufacturer), we maintain sufficient inventory to meet both small and large-volume orders with consistent quality.
- Technical Support: Our knowledgeable staff provides expert guidance on material selection, processing parameters, and application optimization.
FAQ
What makes Nilo46 alloy suitable for glass-to-metal seals?
Nilo46’s coefficient of thermal expansion closely matches that of hard borosilicate glass, typically around 5.2×10⁻⁶/°C between 20-300°C. This matching prevents the development of thermal stresses during heating and cooling cycles that could crack the glass or compromise the seal integrity, making it ideal for hermetic applications in electronics and vacuum systems.
How does Nilo46 compare to other controlled-expansion alloys?
While Nilo46 (Kovar) is designed specifically for glass sealing applications, other controlled-expansion alloys like Invar (Fe-36Ni) offer lower thermal expansion for different applications. Nilo46 provides the optimal balance of expansion properties, strength, and workability for sealing with hard glass, whereas Invar is better suited for applications requiring minimal dimensional change, such as precision instruments and cryogenic components.
Can Nilo46 alloy be welded or brazed?
Yes, Nilo46 can be successfully welded or brazed using appropriate techniques and filler materials. For welding, low-carbon filler metals are recommended to prevent cracking. Brazing typically uses silver-based or gold-based brazing alloys. Proper preheating and post-weld heat treatment may be required depending on the application and joint design to maintain the alloy’s mechanical properties and dimensional stability.
What surface treatments are available for Nilo46 components?
We offer various surface treatments to enhance the performance of Nilo46 components, including passivation to improve corrosion resistance, electropolishing for ultra-smooth surfaces in medical applications, and specialized coatings for specific environmental requirements. Our technical team can recommend the most suitable surface treatment based on your application’s operating conditions and performance requirements.
Summary
As a leading Nilo46 alloy manufacturer and supplier, Qingchuan New Materials (Zhengzhou) Co., Ltd. combines advanced production capabilities with rigorous quality control to deliver superior specialty alloy products. Our comprehensive range of Nilo46 materials serves diverse industries from aerospace to medical devices, where precision, reliability, and performance under extreme conditions are paramount. With our experienced Nilo46队伍 (Nilo46 team) of engineers and technicians, we provide not just products but complete solutions tailored to your specific application needs. Whether you require standard Nilo46 products or custom-developed specialty alloys, our Zhengzhou-based facility stands ready to support your manufacturing requirements with consistent quality and reliable supply.