Zirconium has excellent corrosion resistance and can resist corrosion from most organic acids, inorganic acids, strong alkalis and some molten salts. Therefore, some key components in corrosive environments can use zirconium to improve their service life. Corrosion-resistant zirconium alloys are mainly Zr702, Zr704, Zr705 and Zr706 alloys. The composition of Zr702 alloy is close to pure zirconium, mainly adding a small amount of O, H and N elements. It has high corrosion resistance but low mechanical properties. Zr702 alloy is a high-purity zirconium alloy with good corrosion resistance and mechanical properties.
1. Element content
Zr702 alloy is mainly composed of zirconium (Zr) and a small amount of iron (Fe), chromium (Cr), countersun (Hf) and other elements. Its chemical composition is as follows:
Zirconium (Zr): The content is usually between 99.2% and 99.7%, which is the main component of the alloy, giving the alloy excellent corrosion resistance and chemical stability.
Iron (Fe): The content is controlled below 0.02%. Adding iron can improve the strength and hardness of the alloy.
Chromium (Cr): The content is controlled below 0.05%. Adding chromium alloy can increase the oxidation resistance, especially the corrosion resistance to oxidizing media.
Countersunk (Hf): The content is usually less than 4%. The addition of countersunk can improve the corrosion resistance and heat resistance of the alloy.
2. Excellent characteristics
The advantages of Zr702 alloy are mainly reflected in its corrosion resistance, chemical stability and mechanical properties. It has good corrosion resistance and can operate stably for a long time in various corrosive media. It is resistant to strong acids, strong alkalis, oxidation and other corrosion. At the same time, the high-purity zirconium component gives the alloy excellent chemical stability, so that it can maintain stability and reliability during chemical treatment. In addition, Zr702 alloy also has good mechanical properties, including high strength, good ductility and impact strength, which enables it to meet the engineering requirements of different fields.
3. Application fields
First of all, it is widely used in the chemical industry, especially in manufacturing equipment under deteriorating media. It can handle a variety of strong acids, alkalis and anti-corrosion solutions when manufacturing equipment such as reactors, tanks, heat exchangers, pipes and valves.
Secondly, Zr702 alloy is also an ideal material choice in the nuclear industry. Due to its good radiation resistance and corrosion resistance, it can be used to manufacture nuclear fuel assemblies, nuclear reactor structural materials and nuclear waste treatment equipment.
In addition, in the field of medical device manufacturing, Zr702 alloy also has a wide range of applications. It has good biocompatibility and corrosion resistance and can be used to manufacture manual joints, dental implants and other corrosion-resistant medical devices.
Finally, in the aerospace industry, the high strength and corrosion resistance of Zr702 alloy make it an important material. It can be used to manufacture aircraft engine parts, turbines and spacecraft structures, etc.
Our company can provide high-purity zirconium products such as Zirconium Zr702 Disc, Zr702 Metal Rod and Zirconium TIG Wire, and they have all been certified by ISO quality inspection agencies. Of course, we can also provide other non-ferrous metal products. If you are interested in ordering, please send an email to contact us.
