ASTM B658 Zirconium Pipe
Zirconium is a rare metal, with amazing corrosion resistance, extremely high melting point, high hardness and strength, is used in aerospace, atomic energy and other fields, its melting point at 1800 degrees.
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Product Introduction
Zirconium alloy has good corrosion resistance, moderate mechanical properties, low atomic thermal neutron absorption cross section (0.18 target for zirconium) and good compatibility with fuel in high temperature and high pressure water and steam at 300~400 ºC. Therefore, it can be used as core structural materials (fuel cladding, pressure pipe, support and duct pipe) of water-cooled reactors, which is the main use of zirconium alloy.
Zirconium has excellent corrosion resistance to various acids (such as hydrochloric acid, sulfuric acid, and acetic acid), bases, and salts, so zirconium alloys are also used to make corrosion-resistant components and pharmaceutical devices. Zirconium has a strong affinity for gases such as oxygen and atmosphere, so zirconium and zirconium alloys are also widely used as non evaporable getters in the Shenzhikong and light bulb industries. Zirconium has excellent luminescent properties, making it a material for trapping light and fireworks.
Zirconium and zirconium alloys have good plasticity and can be made into pipes, plates, bars, and wires, with pipes being the main product. The processing technology of zirconium and zirconium alloys depends on the nature of dry zirconium and the special requirements of reactors for zirconium components. The basic properties of zirconium are: easy to be contaminated by oxygen, nitrogen, hydrogen, etc., easy to stick to the mold, and has isomorphic transformation.
Zirconium and zirconium alloys have good fusion welding performance. The commonly used welding methods include tungsten xenon arc welding and electron beam welding. The commonly used welding method for manufacturing the Tiandiao Puwai pipe. Zirconium powder is flammable, and safety precautions should be taken when grinding and cutting zirconium products..
| Element | Composition, % | ||
| R60702 | UNS Frade designation R60704 | R60705 | |
| Zirconium+hafnium, min | 99.2 | 97.5 | 95.5 |
| Hafnium, max | 4.5 | 4.5 | 4.5 |
| Iron+chromium | 0.2 max | 0.2 to 0.4 | 0.2 max |
| Tin | ... | 1.0 to 2.0 | ... |
| Hydrogen, max | 0.005 | 0.005 | 0.005 |
| Nitorgen, max | 0.025 | 0.025 | 0.025 |
| Carbon, max | 0.05 | 0.05 | 0.05 |
| Niobium | ... | ... | 2.0 to 3.0 |
| Oxygen, max | 0.16 | 0.18 | 0.18 |
Packing & Delivery
1. Packaging is very important, especially in international transportation, the goods have to go through multiple channels to reach the final destination, so we pay special attention to packaging.
2. We packages our goods in various ways according to different products.
There are some examples of packaging methods.
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