In the relentless quest for materials that can withstand extreme thermal and mechanical stresses, industries from chemical processing to power generation have faced challenges in finding alloys that balance precision, reliability, and performance. Imagine a semiconductor manufacturer grappling with unpredictable component failures due to mismatched thermal expansion. It was a turning point that led to the rise of Kovar Sheets—a specialized alloy engineered to bridge the gap between metal and glass components with unmatched consistency.
Table of Contents:
Today, Aurico Alloys LLP stands as a trusted supplier and manufacturer of authentic Kovar Sheets, providing chemical, oil & gas, marine, pharma, and power sectors with a solution designed to meet standards such as UNS K94610 and ASTM F15. With its unique nickel-cobalt-iron composition, Kovar offers a thermal expansion closely matched to borosilicate glass, making it indispensable for hermetic seals and precision assemblies in critical equipment.
Unlike common stainless steels or nickel alloys that falter under thermal cycling or introduce mechanical stress, Kovar Sheets excel in maintaining structural integrity at varying operating temperatures, ensuring long-term reliability and reducing costly downtime. This makes them ideal not only for OEM manufacturers and fabricators but also for hardware and industrial supply stores catering to diverse industrial clients seeking resilience and precision.
Aurico Alloys LLP’s extensive stock of Kovar Sheets comes with full certification, traceability, and customization options, ensuring that procurement heads and engineers receive materials that are affordable without compromising quality or authenticity. By choosing Aurico, industries gain the confidence of a partner committed to enabling safer and more efficient operations.
High-quality Kovar Sheets ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grade | Kovar (UNS K94610) |
| Standards | ASTM F15 (UNS K94610); AMS 7728 for sheet, strip and plate |
| Sheet Thickness | 0.1 mm – 6.0 mm |
| Width & Length | Custom cut to order |
| Finish | Cold rolled, pickled, annealed |
| Delivery | Certified with full test reports (MTC), export packaging |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | K94610 |
| Coefficient of expansion (30-400 °C) | 4.60-5.20 µm/m·°C (Acceptance limit per ASTM F15 Section 11.1 - not a typical value) |
| Coefficient of expansion (30-450 °C) | 5.10-5.50 µm/m·°C (Acceptance limit per ASTM F15 Section 11.1 - not a typical value) |
| Plate, sheet and strip specification | AMS 7728 |
Identifiers and physical constants for Kovar. A dash means no such designation is published for this grade.
Stock & Product Availability
Aurico Alloys LLP maintains a robust inventory of Kovar Sheets, ready to supply chemical plants, oil & gas refineries, marine systems, pharmaceutical equipment manufacturers, and power generation facilities, supporting urgent fabrication needs, OEM manufacturing, and supply chains with reliable lead times.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Iron (Fe) | 53 nominal - adjusted to meet the Table 4 expansion limits | |
| Nickel (Ni) | 29 nominal - adjusted to meet the Table 4 expansion limits | |
| Cobalt (Co) | 17 nominal - adjusted to meet the Table 4 expansion limits | |
| Manganese (Mn) | — | 0.50 |
| Silicon (Si) | — | 0.20 |
| Carbon (C) | — | 0.04 |
| Aluminium (Al) | — | 0.10 (Al + Mg + Zr + Ti total 0.20 max) |
| Magnesium (Mg) | — | 0.10 (Al + Mg + Zr + Ti total 0.20 max) |
| Zirconium (Zr) | — | 0.10 (Al + Mg + Zr + Ti total 0.20 max) |
| Titanium (Ti) | — | 0.10 (Al + Mg + Zr + Ti total 0.20 max) |
| Copper (Cu) | — | 0.20 |
| Chromium (Cr) | — | 0.20 |
| Molybdenum (Mo) | — | 0.20 |
Composition for Kovar. Figures given as a range or a maximum are limits and those marked nominal are not; none of them are measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Property | Typical Value |
|---|---|
| Density (g/cm³) | 8.2 |
| Tensile Strength (MPa) | ≥450 |
| Yield Strength (0.2%, MPa) | ≥180 |
| Elongation (%) | ≥30 |
| Thermal Expansion (20–400°C) | 5.0 – 5.5 x 10^-6 /°C (matches Borosilicate glass) |
| Melting Point (°C) | 1350 – 1450 |
Applications & Benefits
- Glass-to-metal seals in electronic and pharmaceutical equipment
- Hermetic packages for semiconductor devices and sensors
- Vacuum tubes, lighting, and electrical connectors
- Marine and chemical plant components requiring thermal expansion match
- Power generation parts exposed to cyclic thermal stress
- Industrial hardware requiring precise mechanical and thermal properties
FAQ & Search Trends
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network Across India
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
For industries where precision, durability, and thermal compatibility define success, Kovar Sheets from Aurico Alloys LLP offer a proven edge. As a trusted supplier, manufacturer, and stockist, Aurico ensures access to affordable, best-quality, authentic Kovar products backed by international certifications like ASTM F15 and UNS K94610. Whether you are engineering next-generation power plant components or specialized chemical processing hardware, is your supply chain ready to leverage Kovar Sheets for unmatched reliability and performance?