Fatigue Testing Explained: Why 10 Million Cycles Matters

Ten million load cycles is the proof-of-strength benchmark used in EN 1993-1-9 for structural steel. MM1018 FL was tested to this standard by ibac at RWTH Aachen University at mean stresses of 40, 50 and 60 N/mm2, with no visible damage recorded. This article explains what that test actually involved and why it is the credential engineers ask for first on dynamic load applications.