Tensile Response of Low-Carbon Steel Specimens across Different Thickness and Diameter Ranges

Authors

  • Franklin Taruyun Hudeardo Sinaga Mechanical Engineering Study Program, Politeknik Negeri Medan
  • Jandri Fan HT Saragi Mechanical Engineering Study Program, Politeknik Negeri Medan
  • Sahat Mechanical Engineering Study Program, Politeknik Negeri Medan
  • Suadi Mechanical Engineering Study Program, Politeknik Negeri Medan
  • Zumhari Electrical Engineering Study Program, Politeknik Negeri Medan

DOI:

https://doi.org/10.55927/fjst.v5i10.7

Keywords:

Tensile Response, Low-Carbon Steel, Specimen Thickness, Specimen Diameter, Tensile Strength.

Abstract

Tensile testing is widely used to characterize the mechanical response of metallic materials. This study analyzes the tensile response of low-carbon steel specimens across different thickness and diameter ranges based on experimental data obtained using a Universal Testing Machine. Three specimen groups were evaluated: flat plate specimens with thicknesses of 4, 6, 8, 10, 16, and 20 mm; plain reinforcing steel with nominal diameters of 8, 10, and 12 mm; and deformed reinforcing steel with nominal diameters of 10, 13, 16, 19, and 22 mm. Each dimensional group was tested three times. The analyzed parameters were yield strength, ultimate tensile strength (UTS), and elongation. The results showed that tensile response did not exhibit a uniform monotonic relationship with specimen thickness or diameter. Plate specimens produced UTS values of 400.58–523.20 MPa, plain reinforcing steel 517.52–538.43 MPa, and deformed reinforcing steel 596.99–674.43 MPa. The observed responses indicate that specimen size should be interpreted together with specimen type and geometry rather than as an isolated determinant of tensile properties

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Published

2026-10-31

How to Cite

Sinaga, F. T. H., Saragi, J. F. H., Sahat, Suadi, & Zumhari. (2026). Tensile Response of Low-Carbon Steel Specimens across Different Thickness and Diameter Ranges. Formosa Journal of Science and Technology, 5(10), 2717–2730. https://doi.org/10.55927/fjst.v5i10.7