| Category |
Alloy system |
Grade |
Core ingredient features |
Key Performance Advantages |
Applicable scenarios |
| Nuclear-grade zirconium alloy |
Zirconium-tin (Zr-Sn) system |
Zr-2 |
Contains Sn, Fe, Cr, Ni |
Excellent resistance to corrosion on the water-facing side. |
Boiling Water Reactor (BWR) fuel cladding and component grids |
| Nuclear-grade zirconium alloy |
Zirconium-tin (Zr-Sn) system |
Zr-4 |
Based on Zr-2, remove Ni and adjust the Fe/Cr ratio. |
Stronger resistance to hydrogen embrittlement |
Pressurized Water Reactor (PWR) fuel cladding (most widely used) |
| Nuclear-grade zirconium alloy |
Zirconium-tin (Zr-Sn) system |
Zr-3 |
Contains Sn, Fe, Cr |
Corrosion resistance is between that of Zr-2 and Zr-4. |
Boiling Water Reactor (BWR) components |
| Nuclear-grade zirconium alloy |
Zirconium-Niobium (Zr-Nb) system |
Zr-1Nb |
Contains 1% Nb |
Good plasticity |
Nuclear reactor structural components |
| Nuclear-grade zirconium alloy |
Zirconium-Niobium (Zr-Nb) system |
Zr-2.5Nb |
Contains 2.5% Nb |
High strength and resistant to high-pressure water corrosion |
Heavy-water reactor (CANDU) pressure tubes and fuel channels |
| Nuclear-grade zirconium alloy |
Zirconium-Niobium (Zr-Nb) system |
M5® |
Contains Nb and O; does not contain Sn, Fe, or Cr. |
Excellent radiation-resistant growth and corrosion performance. |
Advanced Fuel Cladding for Pressurized Water Reactors (PWRs) |
| Nuclear-grade zirconium alloy |
Zirconium-Niobium (Zr-Nb) system |
E110 |
Contains 1% Nb |
Stable overall performance |
Russian pressurized water reactor fuel cladding and structural components |
| Nuclear-grade zirconium alloy |
Zirconium-Niobium (Zr-Nb) system |
E635 |
Improved Zirconium-Niobium Formula |
Superior overall performance compared to E110. |
Advanced nuclear reactor components from Russia |
| Industrial zirconium alloy |
Pure zirconium-based |
Zr-702 |
Zr ≥ 99.2% (pure zirconium alloy) |
Excellent corrosion resistance |
Chemical equipment, heat exchangers, and valves (widely used in industrial applications) |
| Industrial zirconium alloy |
Zirconium-tin system |
Zr-704 |
Contains small amounts of Sn and Fe. |
Slightly higher strength than Zr-702, with corrosion resistance comparable to it. |
Components with a certain level of corrosion resistance are required. |
| Industrial zirconium alloy |
Zirconium-niobium system |
Zr-705 |
Contains 2.5% Nb |
High strength, good ductility, and excellent weldability. |
Marine engineering, high-pressure chemical equipment, aerospace structural components |
| Industrial zirconium alloy |
Zirconium-titanium series |
Zr-Ti alloy |
Contains a small amount of Ti |
High strength at high temperatures and good machinability. |
Medium- and high-temperature corrosion-resistant components |
| Industrial zirconium alloy |
Zirconium-copper system |
Zr-Cu alloy |
Contains trace amounts of Cu |
Good casting performance and excellent wear resistance. |
Casting corrosion-resistant parts |
| Zirconium alloy for special purposes |
Zirconium-hafnium system |
Zr-Hf alloy |
Containing hafnium (Hf) |
Tunable neutron absorption performance |
Specific structural components of a nuclear reactor |
| Zirconium alloy for special purposes |
Zirconium-rare earth series |
Zirconium-rare earth alloy |
Add rare-earth elements such as Ce and Y. |
Good high-temperature oxidation resistance and high strength. |
Aerospace high-temperature components |
