Analyze the effect that carbon content has on microstructure and material properties. • Cite specific points on your graph or other data points to support your analysis. Be specific about the data you use. If you cite actual values, restrict those values to no more than four significant figures for stress values, one decimal for percentages and hardness averages. • This is not a general discussion on carbon content in steel. This discussion relates to 1018 and 1045 steels only.