Generally, wear and corrosion problems that appear on the surface of metallic materials can degrade them and reduce their lifetimes. Therefore, a surface treatment that corrects these objects without affecting their characteristics is more effective than replacing the entire material. Hard chrome is considered one of the most interesting coating materials for increasing wear and corrosion resistance, as well as extending the service life of mechanical parts used in many industrial applications, such as petrochemical, oil and gas. In this work, a growth kinetic study of a hard chromium coating obtained on low-carbon steel substrates by an electrolytic process in a trivalent chromium bath heated to a temperature of 50 ℃ for an immersion time ranging from 10 to 50 min with a 10 min step was conducted. The structure, morphology, thickness and hardness of the coating obtained by various immersion times have been analyzed respectively by X-Ray diffraction, micrographic observation, and micro-hardness test.