Impact Characterization of 4340 and T200 Steels by Means of Standard, Sub Size and Miniaturized Charpy Specimens
Enrico Lucon, Christopher N. McCowan, Raymond L. Santoyo
In this investigation, we performed instrumented Charpy tests in order to characterize the impact properties of three steels, used by NIST for the production of Charpy reference specimens (4340 quenched and tempered with two energy levels, and T200 18Ni maraging steel). For each of the steels, tests were performed on standard E23 Charpy specimens, sub-size specimens of three types (3/4-size, 1/2 size and 1/4-size), and miniaturized specimens of RHS (Reduced Half-Size) geometry. For every combination of steel and specimen type, full transition curves and corresponding transition temperatures were established for absorbed energy, lateral expansion and shear fracture appearance.
, McCowan, C.
and Santoyo, R.
Impact Characterization of 4340 and T200 Steels by Means of Standard, Sub Size and Miniaturized Charpy Specimens, Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.TN.1858
(Accessed June 3, 2023)