sing the lead-lin phase diagram in gure or a nominal composition of 90 % Sn and 10 % Pb at 204 °C. Use the lever rule to determine roportions of liquid and solid phases present in the alloy. Liquid -600 300 500 400 200 183 C (362 F) 61 9% Sn (eutectic composition) 300 emperature C emperature F

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