Phehlukwayo Metal, a reliable manufacturer and supplier located in Cape Town, South Africa, specializes in high-quality **Kovar Bars and Rods** that are crafted for outstanding dimensional stability, thermal expansion control, and mechanical strength. Utilizing advanced precision techniques, these bars and rods boast a smooth surface finish, precise dimensions, and consistent mechanical properties. Renowned for their unique low thermal expansion characteristics, Kovar Bars and Rods are perfect for electronic, aerospace, and precision engineering applications where dependable performance during temperature fluctuations is essential. Phehlukwayo Metal guarantees that all products adhere to international standards, providing durable, high-performance nickel-cobalt-iron alloy solutions tailored for demanding industrial and technological settings.
Kovar Bars and Rods are primarily made up of about 54% iron, 29% nickel, and 17% cobalt, along with trace elements that enhance their mechanical strength and thermal stability. This specific composition ensures excellent dimensional stability, low thermal expansion, and high tensile strength, making it ideal for situations where temperature variations can impact performance. The material showcases a tensile strength ranging from approximately 550 to 700 MPa, a yield strength of 300 to 400 MPa, and good ductility. Its uniform microstructure guarantees reliable mechanical performance, consistent thermal behavior, and long-lasting durability, making Kovar Bars and Rods suitable for critical industrial and electronic applications.
| 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.
Kovar Bars and Rods find extensive use in applications that demand precise thermal expansion control, mechanical strength, and reliability. They are commonly utilized in electronic components, glass-to-metal seals, vacuum tubes, and semiconductor packages. This alloy is also well-suited for aerospace instrumentation, precision engineering parts, and high-temperature devices where maintaining dimensional stability during thermal cycling is crucial. Furthermore, Kovar Bars and Rods are employed in sensor components, connectors, and structural applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Phehlukwayo Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Cape Town, South Africa
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