It’s to be noticed that the 100% coverage shot peened zones shall be extended beyond the areassubjected to hardening treatments or coating deposition, in order to generate compressive residualstress also on heat affected zones.The application of shot peening process at least 10 mm beyond hardened zones specified bydrawings or specifications is recommended.Any operation (heat treatment, machining, etc.) required by the manufacturing cycle shall becompleted before the peening.