High Quality 4J29 Kovar Precision Alloy Tube Factory Direct Price

Product Description

DLX is a premier manufacturer and supplier of high quality 4J29 Kovar Precision Alloy Tube s, offering factory direct prices for unmatched value. Known as a controlled expansion alloy (also ASTM F15 or W.Nr. 1.3981), 4J29 Kovar tube is engineered with a unique iron-nickel-cobalt composition that matches the thermal expansion coefficient of hard borosilicate glass and ceramics. This makes it the ideal choice for hermetic glass-to-metal seals in demanding environments.

Our 4J29 Kovar precision alloy tubes are produced using advanced vacuum melting and seamless extrusion processes, ensuring exceptional purity, uniformity, and dimensional accuracy. Available in diameters from 0.5mm to 50mm and lengths up to 6000mm, these tubes deliver superior performance in electronics, aerospace, and vacuum systems. With factory direct pricing, you get premium quality without the middleman markup – contact us today for custom quotes on high quality Kovar tubes.

Why Choose DLX for Your 4J29 Kovar Precision Alloy Tube Needs? 

As a leading Chinese manufacturer, DLX offers:

• Factory Direct Pricing: Up to 30% savings vs. distributors.

• Customization Expertise: Tailored alloys and finishes for your specs.

• Technical Support: Free consultations from our metallurgists.

• Quality Assurance: 100% traceability and non-destructive testing.

chemical composition

Key Features

Our Factory Price 4J29 Kovar Precision Alloy Tube stands out due to its unique properties tailored for high-precision engineering:

• 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.

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.