FeNiCo Controlled Expansion Alloys 4J29 For Vacuum Electronic Devices Glass Sealing

4J29 is an equal grade of Kovar controlled expansion alloy in China. It has a high Curie point and good low temperature tissue stability

Chemical compistion of 4J29

Features

• High Curie point
• Good low-temperature stability
• Tense oxide film, and can be well wetted by the glass
• No reaction with mercury
• Good corrosion resistance in air, fresh water and sea water

Applications
Kovar is widely used in applications such as power tubes, microwave tubes, transistors, diodes, hybrid packages, and other kinds of scientific instruments.

• Sealing alloys for hard glasses
• Transmitting tube
• Oscillation tube
• Ignitron
• Transistor
• Relay shell

Suzhou Xunshi New Material Co., Ltd (refered as Xunshi afterwards) is a professional supplier of high performance alloys. Our factory is specialized in manufacturing Nickel alloys & Cobalt alloys for 10⁺ years，with a company mission to provide a high quality, reliable source for precision alloys, high temperature alloys and stainless steels in both pilot run and mass production. We are professionally manufacturing materials with unique features, which are then used in aerospace, military, electronics, marine, petroleum and petrochemical industries.

Base on “Quality-oriented, Leading Technology, Continuous Improvement, Customer Satisfaction”, we believe Xunshi could be your best supplier.

Product Scope of Xunshi

· Inconel

· Hastelloy

· Incoloy

· Monel

· Nimonic

· Nitronic

· Haynes

· Special Stainless Steel

· Soft Magnetic Alloy

· Permanent Magnetic Alloy

· Elastic Alloy

· Controlled Expansion Alloy

· Magnetostrictive Material

Services of Xunshi

· Material selection

· Non-standard product research and pre-production

· Hard to find material sourcing

· Cutting/splitting

· Precision machining

· Heat treatment

· Customized Packing

· Logistics service

Advantages of Xunshi

· Experienced in industry

· Quality control system

· Authorized Certificates

· Guaranteed delivery and quality

· Customers from 30+ countries trust us

Xunshi is engaged in introducing China-origin high performance alloys to the entire world. Choose Xunshi, choose high performance.