Chuck Metals stands out as a top manufacturer and supplier in Singapore, specifically on Pulau Ujong, where they offer top-notch Kovar Bars and Rods that adhere to international standards for precision and performance. These bars and rods are celebrated for their unique thermal expansion properties, making them a go-to choice in industries that require reliable glass-to-metal and ceramic-to-metal sealing. Chuck Metals prides itself on its superior manufacturing techniques, ensuring that their products boast an excellent surface finish, precise dimensions, and solid mechanical stability. With applications spanning aerospace, electronics, telecommunications, and instrumentation, their Kovar products are known for their durability, reliability, and exceptional quality in demanding, high-performance settings.
Kovar Bars and Rods are made up of about 29% nickel, 17% cobalt, and the rest iron, along with trace elements that boost performance. They feature a controlled coefficient of thermal expansion, impressive tensile strength, and good machinability. This alloy maintains its mechanical stability over a wide temperature range, making it perfect for high-precision sealing applications. Its thermal properties ensure it works well with glass and ceramics, preventing cracks or leaks in delicate assemblies.
| Standards : | UNS K94610 | Werkstoff Nr 1.3981 | DIN 17745 | ASTM F15 | AMS 7726 | AFNOR NF A54-301 | S.E.W 385 |
| Size Range : | 0.015″ Thk up to 2″ Thk |
| Thickness : | Range from .008″ to .0125″ |
| Length : | 2m, 2.44m, 3m, or as required |
| Width : | 10-2500mm |
| Weight % | Ni | Fe | Co | C | Mn | Si | Al | Cr | Mg | Zr | Ti | Cu | Mo |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alloy K Kovar | 29.0 | 53.0 | 17.0 | 0.04 max | 0.50 max | 0.20 | 0.10 max | 0.20 max | 0.10 max | 0.10 max | 0.10 max | 0.20 max | 0.20 max |
| Material | Condition | Yield Strength (0.1% Offset) | Tensile Strength | Elongation % | ||
|---|---|---|---|---|---|---|
| psi | MPa | psi | MPa | |||
| Alloy K Kovar | Annealed | 49,000 | 340 | 75,000 | 520 | 42 |
| ASTM | UNS | Workstoff | AMS | DIN | AFNOR | S.E.W |
| F15 | K94610 | 1.3981 | 7726 | 17745 | NF A54-301 | 385 |
Kovar rods, primarily composed of iron, cobalt, and nickel, are resistant to galvanic corrosion due to their similar electrochemical properties with most alloys, reducing the risk when paired with compatible materials.
Yes, Kovar bar can be welded, but it requires special techniques and precautions due to its unique composition and thermal expansion properties. Proper heat control and filler metals are essential.
Kovar rods typically come in diameters ranging from 1/8" to 4" and lengths of up to 12 feet. Finishes include mill, polished, and brushed surfaces for various applications.
These Kovar Bars and Rods find extensive use in hermetically sealed electronic devices, optical instruments, and semiconductor packaging. In the aerospace and defense sectors, they play a crucial role in sensitive measurement equipment and microwave components. Electronics manufacturers rely on Kovar for vacuum tubes, CRTs, and power transistors because of its sealing compatibility. In medical and scientific equipment, its stability guarantees reliable performance in precision assemblies. Kovar’s unique expansion characteristics make it essential for applications where material compatibility and dimensional integrity under temperature fluctuations are vital.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chuck Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Singapore, Singapore
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