Analysis Of the Effect of Vegetal and Coking Coals on the Surface Hardness of Carburized AISI 8620 Steel




AISI 8620, Heat treatments, Carburizing, Surface Hardness


In this investigation, the comparative study of the superficial hardness of AISI 8620 steel thermally treated by carburizing, using vegetable and coking coals, was developed. The objective was to propose an alternative to the element used to generate the carburizing atmosphere. The previous stages have been described, such as the preparation of the material and its verification, as well as the dimensions and characteristics, defined by the ASTM E-18 standard. By considering four variables, each one with two levels, an orthogonal array matrix of 16 experiments was generated. The surface hardness measurements were processed through an analysis of variance (ANOVA), where the significance of each variable considered as a factor was obtained. Coking coal can be used as an element for the generation of carburizing atmosphere since a maximum relative error of 3.86 % was obtained between the experimental values and the values in the literature. In contrast, the vegetable coal did not improve the mechanical properties of the steel, reaching an average hardness of 25.95 HRC after heat treatments.



Download data is not yet available.


S. Mishra and R. Dalai. "Effect of Quenching and Partitioning Treatment on Low Carbon Medium Manganese Alloyed Steels-A Short Review," Materials Today: Proceedings, vol. 43, pp. 593-596, 2021. Available: 10.1016/j.matpr.2020.12.107

Y. Martínez and R. Collazo. "Revisión bibliográfica de los efectos de los parámetros de soldadura en las tensiones residuales del proceso," Investigaciones en Ingeniería, vol. 16, pp. 85-98, 2018. Available:

Y. González and J. Rengel. "Comportamiento termo fluidodinámico del acero en un molde de colada continua: una revisión," TecnoLógicas, vol. 24, no. 51, pp. 230-262, 2021. Available: 10.22430/22565337.1856

Böhler. "Steels for Carburizing: AISI 8620 / 5115," 2022. [Online]. Available: [Accessed 08 May 2022].

S. Akande, O. Ajaiyeoba, T. Azeez, O. Ikumapayi, S. Akinlabi and E. Akinlabi. "Investigating the Precipitation Hardening of 2024 Aluminium Alloy Under Different Quenching Media," Materials Today: Proceedings, vol. 2214, pp. 1-4, 2022. Available: 10.1016/j.matpr.2022.04.775

D. Feldiorean and M. Tierean. "Studies on the Carburizing Process of AISI 8620 Steel Obtained by MIM Technology," Recent, vol. 19, no. 2, pp. 70-77, 2018. Available: 10.31926/RECENT.2018.55.070

M. Erden and F. Aydun. " Wear and Mechanical Properties of Carburized AISI 8620 Steel Produced by Powder Metallurgy," International Journal of Minerals, Metallurgy and Materials, vol. 28, no. 3, pp. 430-440, 2021. Available: 10.1007/s12613-020-2046-8

R. Kumar, P. Gosh and S. Kumar, "Thermal and Metallurgical Characteristics of Surface Modification of AISI8620 Steel Produced by TIG Arcing Process," Journal of Materials Processing Technology, vol. 240, p. 420–431, 2017. Available: 10.1016/j.jmatprotec.2016.10.020

K. Thirugnanasambantham and A. Ganesh. "Mechanistic Studies on Degradation in Sliding Wear Behavior of carburized AISI 8620 Steel at 100°C Under Unlubricated Conditions," Materials Today: Proceedings, vol. 5, p. 6258–6267, 2017. Available: 10.1016/j.matpr.2017.12.235

Z. Wani and N. Kumar. "A Review on Carburizing Temperature and the Mechanical Behaviour of Mild Steel," Dogo Rangsang Research Journal, vol. 10, no. 9, pp. 115-128, 2020. Available:

J. Mathews, H. Farahani, J. Sietsma, J. Petrov, M. Mecozzi and M. Santofimia. "Microstructures in a Carburized Steel After Isothermal Pearlitic Treatment," Journal of Materials Science & Technology, vol. 160, no. 10, pp. 66-75, 2023. Available: 10.1016/j.jmst.2023.03.017

ASTM International. "ASTM E18 - Standard Test Methods for Rockwell Hardness of Metallic Materials," 2022. [Online]. Available: [Accessed 24 July 2022].

BonGROUP. "High-Performance DURIXOL Quenching Oils With a Very Fast Cooling Effect," 2023. [Online]. Available: [Accessed 30 February 2023].

X. Pham, A. Hoang, D. Nguyen and V. Le. "Effect of Factors on the Hydrogen Composition in the Carburizing Process," International Journal of Applied Engineering Research, vol. 12, no. 9, pp. 8238-8244, 2017. Available:

M. Groover. Fundamentos de Manufactura Moderna - Materiales, procesos y sistemas, Naucalpan: Pearson Pretice Hall, 1997.

I. Simbaña, W. Quitiaquez, J. Estupiñán, F. Toapanta-Ramos and L. Ramírez. "Evaluación del rendimiento de una bomba de calor de expansión directa asistida por energía solar mediante simulación numérica del proceso de estrangulamiento en el dispositivo de expansión," Revista Técnica Energía, vol. 19, no. 1, pp. 110-119, 2022. Available: 10.37116/revistaenergia.v19.n1.2022.524



How to Cite

Ramírez, L., Rodríguez, N., Simbaña, I., & Saquinga, D. (2024). Analysis Of the Effect of Vegetal and Coking Coals on the Surface Hardness of Carburized AISI 8620 Steel. Enfoque UTE, 15(1), 1-6.