M 5合金是一种适用于高燃耗组件的新型锆合金，主要用作燃料棒包壳、端塞、导向管和定位格架材料。
M5 alloy was a new zirconium alloy used in high burn up assembly such as fuel cladding, end plug, guide tube and grid spring and so on.
目前采用低温加工工艺生产的锆- 4合金包壳管已达到技术条件要求，保证了反应堆在燃耗寿期内的安全运行。
At present, the zircaloy-4 cladding tubes fabricated by low temperature process can meet the technical requirement, and can ensure the safety of nuclear reactor during its life cycle.
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