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The paper presents the results of cold upsetting testing of 16.5 mm-diameter 20MnB4 steel wire rod. The main purpose of the study was to evaluate the ability of wire rod produced in industrial conditions for further cold metal forming. Due to the fact that cracks occurred in the test material at different strain values, the authors made an attempt to answer the question whether there are any crack initiators in the material structure, or the observed cracks are due to the manufacturing process parameters

The Assessment of the Cold Plastic Workability of 20MnB4 Steel Wire Rod / Ocena Zdolności Do Przeróbki Plastycznej Na Zimno Walcówki Ze Stali 20MnB4