Kovar Alloy Tensile Strength at High Temperature

Kovar alloy, a precision metal primarily composed of nickel, cobalt, and iron, is well-known for its thermal expansion properties and ability to maintain structural integrity in extreme conditions. In this article, we’ll explore Kovar alloy's tensile strength at high temperatures and its importance in various high-performance applications.

What is Kovar Alloy?

Kovar is a high-performance alloy primarily composed of 29% cobalt, 17% nickel, and the balance being iron. This unique composition gives it properties that are valuable in applications where a low thermal expansion coefficient and high strength are required. Kovar is commonly used for applications involving sealing materials in electronics and for components in the aerospace industry.

Tensile Strength of Kovar Alloy at High Temperature

Kovar maintains its tensile strength even at high temperatures, making it a preferred material for high-heat environments. The tensile strength of Kovar alloy at various temperatures is as follows:

• At Room Temperature: Approximately 90-105 ksi (620-725 MPa)
• At 500°C (932°F): Approximately 60-75 ksi (414-517 MPa)
• At 600°C (1112°F): Approximately 50-65 ksi (345-448 MPa)
• At 700°C (1292°F): Approximately 40-55 ksi (276-379 MPa)

As shown, Kovar alloy retains a significant amount of its strength even at high temperatures, although it does experience a reduction as the temperature increases. This ability to perform at elevated temperatures is a critical factor in its use for sealing glass-to-metal in electronics and other high-temperature environments.

Applications of Kovar Alloy at High Temperatures

Kovar’s tensile strength at high temperatures makes it suitable for various applications:

• Electronic Seals:
  Kovar is used for sealing glass-to-metal in electronic components where a stable performance under high heat is essential.
• Aerospace:
  The alloy is used in aerospace components that need to withstand high-temperature stress while maintaining structural integrity.
• Vacuum Systems:
  Kovar’s strength at high temperatures makes it ideal for vacuum-sealing systems in the semiconductor industry.
• Medical Devices:
  Kovar is used in medical equipment where both high strength and high-temperature resistance are crucial.

Why Kovar Alloy is Chosen for High-Temperature Applications

Kovar is chosen for high-temperature applications due to its:

• Low coefficient of thermal expansion (CTE), which ensures compatibility with materials like glass.
• Excellent mechanical properties that provide durability and strength even under thermal stress.
• Ability to maintain its integrity at elevated temperatures, ensuring reliable performance in harsh environments.

Contact Information

If you are looking for Kovar alloy or more information about its high-temperature performance, feel free to reach out to:

• Shanghai COCESS Special Alloys Co., Ltd.
  Contact us to learn more about Kovar alloy and its applications in high-temperature environments:

Contact Details

• Email: info@cocessalloys.com
• Phone: +86 159 0052 6263
• Website: www.cocessalloys.com

Conclusion

Kovar alloy’s ability to maintain high tensile strength at elevated temperatures makes it indispensable in critical high-heat applications. Whether used in aerospace, electronics, or medical devices, Kovar provides exceptional performance and reliability. For more information or to make an inquiry, contact Shanghai COCESS Special Alloys Co., Ltd. today.