Abstract

The Plain-Carbon steel are considered as one of the most common
metallic materials used in engineering and industrial applications due to its ability
in altering the micro-structures and mechanical properties as the result of carbon
content. These alterations have direct effect on the corrosion rate of steel by
building up galvanic corrosion cells between its microscopic phases. The effect of
carbon content on the corrosion resistance of Hypo-eutectoid plain carbon steels
having different carbon contents such as 0.05%C , 0.2%C , 0.35%C , 0.5%C , and
0.65%C have been studied using three testing durations which are 4 weeks, 6
weeks, and 8 weeks and different corrosion environments such as atmosphere,
fresh water, and salt water. The aim of the present work is to obtain the effect of
carbon content on the corrosion resistance of steels in different corrosion medium
by using the weight loss technique as a function of the corrosion resistance. The
results, which have been obtained during this work show that a correlation can be
made between corrosion rates and steels carbon content, and the corrosion
resistance decreases with the increase in carbon content.