4J29 alloy, also known as Kovar alloy, has high strength and hardness at low temperature of 234, and good plasticity and toughness at low temperature below 400. In addition, the alloy also has excellent welding properties and processing properties, and is widely used in the manufacture of various parts that require low temperature resistance and corrosion resistance.
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Alloy 4J29 belongs to the iron-nickel-cobalt glass seal alloy, which has a low coefficient of expansion and almost no shrinkage in the range of 20 450. The alloy also has good microstructure stability at low temperatures, maintaining good strength and hardness at -60. In addition, the alloy also has good fatigue resistance and corrosion resistance, and is suitable for manufacturing various parts that require low temperature resistance and corrosion resistance.
During the production process, 4J29 alloy needs to go through a series of heat treatment and processing steps to ensure its performance and quality. First, the alloy needs to be solution treated to relieve stress and increase strength. Secondly, aging treatment is required to further enhance the hardness and stability of the alloy. In addition, a work hardening treatment is required to improve the plasticity and toughness of the alloy.
In order to meet the needs of different applications, 4J29 alloy can be made into various shapes and sizes. For example, tubes, rods, strips, etc., can be made by casting or forging processes. In addition, these products can be made into various complex structural parts and assemblies through processing and welding processes.
In conclusion, 4J29 alloy is a Kovar alloy with excellent properties and wide applications. To ensure its performance and quality, a series of heat treatment and processing steps are required. At the same time, the alloy has the characteristics of low expansion coefficient and excellent low-temperature microstructure stability, and is widely used in the manufacture of various parts that require low temperature resistance and corrosion resistance.