Plot the yield and tensile strengths of the ratio of coarse to fine pearlite as a function of carbon composition according to Table 12-1.

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Table 12-1 The effect of carbon on the strength of steels Slow Cooling (Coarse Pearlite) Yield Tensile Carbon % Strength (psi) Strength (psi) 57,200 75,250 90,750 89,250 95,250 % Elongation 0.20 42,750 0.40 51,250 0.60 54,000 0.80 54,500 0.95 55,000 (Based on Metals Progress Materials and Processing Databook, 1981.) 36.5 30.0 23.0 25.0 13.0 Fast Cooling (Fine Pearlite) Tensile Yield Strength (psi) Strength (psi) 50,250 54,250 61,000 76,000 72,500 64,000 85,500 112,500 146,500 147,000 % Elongation 36.0 28.0 18.0 11.0 9.5