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最近出现的第三代单晶高温合金ＣＭＳＳＸ－１０、ＲｅｎｅＮ６，其蠕变断裂性能比第二代单晶合金高约３０℃。其成分的特点是含铼量高（达６％），含铬量低（约３％）但环境性能良好。据报道，第三代单晶合金已用作研制中的推重比为１０的航空发动机Ｆ１１９的叶片材料。
The recent third generation single crystal superalloy CMSSX-10, ReneN6, its creep rupture performance than the second generation single crystal alloy is about 30 ℃. Its composition is characterized by high rhenium content (up to 6%), low chromium content (ca. 3%) but good environmental performance. It is reported that the third generation of single crystal alloys have been used as a blade material for the F119 aeroengine under development at a push-to-weight ratio of 10.