Your Reliable Source for Precision Alloy Materials
Precision alloys are specialized metal materials engineered for applications requiring controlled physical properties, dimensional stability,
and consistent performance. As an experienced precision alloy manufacturer, we provide reliable material solutions with strict control over alloy composition,
production processes, and product quality. With advanced manufacturing capabilities and technical expertise, we support customers with
customized requirements including material specifications, product dimensions, tolerances, surface conditions, and inspection documentation.
Our Precision Alloy Grades
We specialize in precision alloy manufacturing, supplying high-performance materials including KOVAR, INVAR, and PERMALLOY alloys.
Precision Alloy Products in Various Forms
We supply precision alloys in various product forms to meet different manufacturing and fabrication requirements.
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Precision Alloy BarsAvailable in round bars, flat bars, and custom profiles, our precision alloy bars offer excellent material consistency and machinability for precision components, machining parts, and industrial applications.
Explore Our Precision Alloy Products
Discover our complete range of precision alloy products, including KOVAR, INVAR, and PERMALLOY alloys
available in different forms and specifications.
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![PERMALLOY]()
PERMALLOYPERMALLOY (1J79 / UNS K94440) is a nickel-iron-based high-permeability soft magnetic alloy with a typical composition of 79% Ni - 4% Mo - the balance Fe. It is one of the most representative...
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![INVAR]()
INVARINVAR (4J36 / UNS K93600) is an iron-nickel-based low-expansion precision alloy, with a nominal composition of 64% Fe - 36% Ni. It is the most representative low-expansion alloy grade in the...
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![KOVAR]()
KOVARKOVAR (UNS K94610 / ASTM F15 / 4J29) is a iron-nickel-cobalt-based hermetic sealing alloy, with a nominal composition of 29% Ni - 17% Co - balance Fe. It stands as one of the most representative...
Precision Alloy Applications Across Industries
Precision alloys such as KOVAR are widely used in electronic packaging and semiconductor components where reliable glass-to-metal sealing and thermal expansion matching are required.
- Semiconductor packages
- Electronic enclosures
- Hermetic sealing components
- Electrical components
INVAR alloys provide excellent dimensional stability under temperature variations, making them suitable for aerospace components and precision instruments requiring minimal thermal deformation.
- Aerospace structures
- Precision measurement equipment
- Optical instruments
- Calibration tools
PERMALLOY alloys offer high magnetic permeability and excellent magnetic performance for applications requiring efficient electromagnetic response and signal control.
- Magnetic shielding
- Sensors
- Transformers
- Relays
Precision alloy materials support manufacturing applications requiring consistent properties, accurate dimensions, and reliable processing performance.
- Precision components
- Tooling systems
- Industrial equipment
Engineered Manufacturing for Reliable Precision Alloy Performance
From alloy composition control and precision forming to heat treatment and final inspection, every stage of our alloy production process is meticulously monitored to ensure stable material properties, high dimensional accuracy, and consistent quality.
Whether you require standard materials or custom specifications, our engineering and manufacturing teams will work closely with you to provide precision alloy solutions that meet your technical and application needs.
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• Precision alloy melting and composition controlEnsures stable alloy composition to meet the performance requirements of various functional materials.
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• Precision rolling, drawing, and formingSupports various product forms including plates, strips, bars, wires, and tubes.
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• Customized dimensions and processingSupports customized dimensions, tolerances, surface finishes, and deep processing requirements.
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• Heat treatment optimizationOptimizes heat treatment processes based on different material properties to improve dimensional stability and material performance.
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• Comprehensive material inspectionCoverage includes testing of chemical composition, dimensional accuracy, mechanical properties, and special properties.
Why Choose Us as Your Precision Alloy Manufacturer
With extensive experience in precision alloy manufacturing, we provide reliable material solutions supported by advanced
production capabilities, strict quality control, and flexible customization services. From material production to final delivery,
we ensure consistent quality and dependable supply for customers worldwide.
We provide customized alloy solutions based on specific customer requirements, including alloy grades, product forms, dimensions, tolerances, and surface conditions. Our engineering team works closely with customers to develop suitable materials for different application requirements.
Our engineering team consists of specialists in materials science, metallurgy, and mechanical manufacturing, with extensive experience in alloy development and processing technologies. Through continuous R&D investment and cooperation with professional research institutions, we focus on advanced alloy applications, heat treatment optimization, and precision processing improvements.
Our precision alloy products are supplied to customers in more than 30 countries and regions, including Germany, Italy, the United States, Japan, and South Korea. With extensive export experience and knowledge of international quality requirements, we support manufacturers worldwide with reliable alloy materials and professional service.
We provide professional export services and reliable delivery solutions to ensure a smooth purchasing experience for global customers. From accurate export documentation and customized packaging to shipment tracking and logistics coordination, we help ensure safe and efficient delivery of precision alloy products.
FAQ
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Comparison |
INVAR (4J36) |
KOVAR (4J29) |
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Type |
Low-expansion precision alloy |
Glass-to-metal sealing alloy |
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Nominal Composition |
64% Fe — 36% Ni |
29% Ni — 17% Co — Fe balance |
|
Coefficient of Thermal Expansion (CTE) |
α ≤ 1.8 × 10⁻⁶ /°C (-100°C to +200°C) |
α ≈ 4.5 — 6.5 × 10⁻⁶ /°C (-80°C to +450°C) |
|
Curie Temperature |
≈ 230°C |
≈ 415°C |
|
Thermal Expansion Match |
N/A (ultra-low expansion, not designed for sealing) |
Matches borosilicate glass and alumina ceramics |
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Core Advantages |
Ultra-low CTE, excellent dimensional stability, superior low-temperature performance |
Matches glass/ceramic expansion, hermetic sealing capability, leak rate < 1 × 10⁻⁹ Pa·m³/s |
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Recommended Applications |
Precision instruments, LNG storage and transportation, aerospace structural components, optical metrology, cryogenic engineering |
Semiconductor packaging, IC lead frames, electron tubes, optical communication devices, sensor packaging, aerospace electronics |
• Mechanical property testing (tensile, yield, elongation, hardness)
• Coefficient of Thermal Expansion (CTE) test reports (critical for INVAR and KOVAR)
• Hermetic sealing performance test reports (for KOVAR and other sealing alloys)
• Magnetic performance test reports (for applicable grades)
• Grain size evaluation and microstructural analysis
• Dimensional inspection records
• Third-party inspection reports (SGS, BV, DNV, etc.) available upon request
All reports are fully traceable to heat numbers and production batches.
• Material grade selection based on your CTE requirements, operating temperature range, and application environment
• Dimensional tolerance and form (bar, sheet, strip, pipe, wire) recommendations
• Heat treatment and processing guidance to achieve required material properties
• Application-specific support for glass-to-metal sealing, cryogenic service, and precision instrumentation
Please share your project requirements, and we will recommend the most suitable precision alloy solution.
With abundant experience, we are one of the most professional precision alloy manufacturers and suppliers in China. We are committed to providing high quality metal products for global clients. Please feel free to wholesale bulk high-grade precision alloy in stock here from our factory.
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Please inform us of your requirements regardingmaterial grade, product form, or applications, andour technical team will provide a suitable solutionand a fast quotation.
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