Influence of SMAW Welding Current Variations on the Tensile Strength of API 5L Grade B Pipe
Abstract
Welding often fails or rejects weld joints on API 5L Gr.B material, which is a critical problem, because the pipe is a very important part. It will have fatal consequences for the production process. This research is proposed to study the effect of Shielded Metal Arc Welding (SMAW) process current variations on the tensile strength of API 5L Gr. B Pipe material. Results from previous investigations reveal that, single pass welded joint was found to possess adequate strength and meet requirements and the impact toughness for API 5L Gr.B steel pipe oil and gas. The parent material was superior to that of multi-pass weld zone and heat affected zone (HAZ) at all test of temperatures. The ultimate stress with 50 A welding is 295.31 MPa and the yield stress is 216.41 MPa. The tensile stress with a welding current of 140 A produces an ultimate strength of 261.98 MPa and a yield stress of 191.41 MPa so that the SMAW welding process by increasing the current can reduce the tensile strength of the welding results.
##Keywords:##
Dye penetrant, Radiography, SMAW welding, Tensile strength.
Published
Dec 3, 2025
How to Cite
WERIONO, Weriono et al.
Influence of SMAW Welding Current Variations on the Tensile Strength of API 5L Grade B Pipe.
Journal of Ocean, Mechanical and Aerospace -science and engineering-, [S.l.], v. 69, n. 3, p. 253-258, dec. 2025.
ISSN 2527-6085.
Available at: <https://isomase.org/Journals/index.php/jomase/article/view/560>. Date accessed: 10 may 2026.
doi: http://dx.doi.org/10.36842/jomase.v69i3.560.
References
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[15] Pandey C, Mahapatra MM, Kumar P, Saini N, Srivastava A., (2017), Microstructure and mechanical property relationship for different heat treatment and hydrogen level in multi-pass welded P91 steel joint. J Manuf Process; 28:220e34.
[2] Xu, Z., & Huang, F. (2012). Plastic behavior and constitutive modeling of armor steel over wide temperature and strain rate ranges. Acta Mechanica Solida Sinica, 25(4), 418–430.
[3] Grajcar, A., Morawiec, M., Ró?a?ski, M., & Stano, S. (2017). Twin-spot laser welding of advanced high-strength multiphase microstructure steel. Optics & Laser Technology, 92, 52–61.
[4] Banerjee, S., Dhar, S., Acharya, D., & DattaNayak, N. (2015). Determination of Johnson Cook material and failure model constants and numerical modelling of Charpy impact test of armor steel. Materials Science and Engineering: A, 640, 200–209.
[5] Reddy, G.M., Mohandas, T., & Papukutty, K.K. (1998). Effect of welding process on the ballistic performance of high-strength low-alloy steel weldments. Journal of Materials Processing Technology, 74(1–3), 27–35.
[6] Lakshminarayanan, A.K., Shanmugam, K., &Balasubramanian, V. (2009). Effect of welding processes on tensile and impact properties, hardness and microstructure of AISI 409M ferritic stainless joints fabricated by duplex stainless steel filler metal. Journal of Iron and Steel Research, International, 16(6), 66–72.
[7] Verma, J., & Taiwade, R.V. (2016). Dissimilar welding behavior of 22% Cr series stainless steel with 316L and its corrosion resistance in modified aggressive environment. Journal of Manufacturing Processes, 24, 1–10.
[8] Pamnani, R., Jayakumar, T., Vasudevan, M., & Sakthivel, T. (2016). Investigations on the impact toughness of HSLA steel arc welded joints. Journal of Manufacturing Processes, 21, 75–86.
[9] Shirmohammadi, D., Movahedi, M., & Pouranvari, M. (2017). Resistance spot welding of martensitic stainless steel: Effect of initial base metal microstructure on weld microstructure and mechanical performance. Materials Science and Engineering: A, 703, 154–161.
[10] Barényi, I., Híreš, O., & Lipták, P. (2011). Degradation of mechanical properties of armoured steels after its welding. DalamProceedings of the International Conference of Scientific Paper AFASES 2011 (hlm. 845–848). Henri Coanda Air Force Academy.
[11] Jeon, J.Y., Kim, Y.J., Kim, J.W., & Lee, S.Y. (2015). Effect of thermal ageing of CF8M on multiaxial ductility and application to fracture toughness prediction. Fatigue & Fracture of Engineering Materials & Structures, 38(12), 1466–1477.
[12] Youn, G.G., Nam, H.S., Kim, Y.J., & Kim, J.W. (2019). Numerical prediction of thermal aging and cyclic loading effects on fracture toughness of cast stainless steels CF8A: Experimental and numerical study. International Journal of Mechanical Sciences, 163, 105120.
[13] Sarsilmaz, F., Kirik, I., & Bat?, S. (2017). Microstructure and mechanical properties of armor 500/AISI2205 steel joint by friction welding. Journal of Manufacturing Processes, 28, 131–136.
[14] Ahmed, S.R., Agarwal, L.A., & Daniel, B.S.S. (2015). Effect of different post weld heat treatments on the mechanical properties of Cr-Mo boiler steel welded with SMAW process. Materials Today: Proceedings, 2(4), 1059–1066.
[15] Pandey, C., Mahapatra, M.M., Kumar, P., Saini, N., & Srivastava, A. (2017). Microstructure and mechanical property relationship for different heat treatment and hydrogen level in multi-pass welded P91 steel joint. Journal of Manufacturing Processes, 28, 220–234.
A;703: 154e61.
[9] Bar enyi I, Híre O, Lipt_ak P., (2011), Degradation of mechanical properties of armoured steels after its welding. In: Proceedings of international conference of scientific paper; p. 845e8. AFASES2011, 26e28, 2011, Brasov, Romania.
[10] Grajcar A,Morawiec M, Rozanski M, Stano S., (2017), Twin-spot laser welding of advanced high-strength multiphase microstructure steel. Opt Laser Technol ; 92:52e61.
[11] Sarsilmaz F, Kirik I, Bat? S., (2017), Microstructure and mechanical properties of armor 500/AISI2205 steel joint by friction welding. J Manuf Process; 28:131e6.
[12] Ahmed SR, Agarwal LA, Daniel BSS., (2015), Effect of different post weld heat treatments on the mechanical properties of Cr-Mo boiler steel welded with SMAW process. Mater Today Proc. ; 2:1059e66.
[13] J.Y. Jeon, Y.J. Kim, J.W. Kim, S.Y. Lee, (2015), Effect of thermal ageing of CF8M on multiaxial ductility and application to fracture toughness prediction, Fatigue Fract. Eng. Mat. 38, 1466e1477.
[14] G.G. Youn, H.S. Nam, Y.J. Kim, J.W. Kim, (2019), Numerical prediction of thermal aging and cyclic loading effects on fracture toughness of cast stainless steels CF8A: experimental and numerical study, Int. J. Mech. Sci. 163, 105e120.
[15] Pandey C, Mahapatra MM, Kumar P, Saini N, Srivastava A., (2017), Microstructure and mechanical property relationship for different heat treatment and hydrogen level in multi-pass welded P91 steel joint. J Manuf Process; 28:220e34.
