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The objective of this paper is to study Charpy–V notch and CT testsin the ductile–brittle transition range from both an experimental and numericalaspects. Tests were carried out between..165C and 100C on Charpy–Vspecimens using an instrumented pendulum and between..60C and 0C onCT30 sidegrooved specimens. Numerical simulations of both tests are presentedwhere ductile damage is simulated by Rousselier model and cleavage fracture usingBeremin model. Differences between the stress field ahead of a propagating ductilecrack in both specimen geometry are underlined. Calculations are then post–processed to determine the failure probability in the transition temperature rangeunder investigation.