Wholesale 4J29 Kovar Precision Alloy Tube China Factory Direct Price

Product Description

4J29 Kovar Precision Alloy tube, commonly known as Kovar alloy tube, is a controlled-expansion precision alloy composed primarily of iron, nickel (29%), and cobalt (17%). This unique composition gives 4J29 Kovar precision alloy tube a thermal expansion coefficient nearly identical to borosilicate glass and alumina ceramics, making it ideal for glass-to-metal and ceramic-to-metal sealing applications.

At DLX Alloy, our Kovar precision alloy tube undergoes rigorous vacuum melting and precision forming processes to achieve outstanding machinability, weldability, and non-magnetic properties. As a reliable China supplier, we offer 4J29 alloy tube that can be customized to your exact specifications, ensuring seamless integration into your assemblies. The versatility of Kovar precision alloy tube has made it a staple in high-reliability components worldwide.

chemical composition

Key Features

Our 4J29 Kovar alloy tube stands out with features designed for superior functionality:

• Controlled Thermal Expansion

  Matches the coefficient of expansion of borosilicate glasses and alumina ceramics, preventing stress cracks in sealed assemblies.

• High Purity Composition

  Consists of approximately 29% nickel, 17% cobalt, and balance iron, ensuring minimal impurities for optimal performance.

• Excellent Corrosion Resistance

  Withstands harsh environments, including oxidizing atmospheres up to 500°C, ideal for long-term reliability.

• Magnetic Properties

  Maintains low magnetic permeability, suitable for sensitive electronic applications.

Advantages Over Standard Alloys:

Compared to other precision alloys, 4J29 alloy tube offers unmatched compatibility for hermetic packaging. Our Kovar precision alloy tube reduces failure rates in thermal shock tests, providing cost savings through longer service life. As a China supplier committed to innovation, DLX Alloy ensures every 4J29 Kovar precision alloy tube batch is certified for traceability and compliance.

Invest in Kovar precision alloy tube from DLX Alloy for applications demanding precision and durability—your ideal partner for precision alloy solutions.

Packaging and shipping

FAQ

What are your working hours and contact information? 

Monday to Saturday: 7:30 a.m. to 5:00 p.m. (Beijing Time, GMT+08:00). May 1st to 3rd are public holidays, as well as October 1st to 7th and the Lunar New Year holiday. If you have any questions, please email us during the holiday period. 

Do you offer free samples?

Yes, we can provide free samples for testing. The buyer is responsible for all the shipping costs. 

What are your payment terms?

Wire transfer, letter of credit, deposit, deposit, deposit, Western Union, Speedy Money, PayPal 

What is the delivery time?

Usually, the delivery time for samples is 7 days after the payment is confirmed.