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Cooling a combination of metal having 0.8percent carbon dioxide reduced less than 723 °C so you can room temperature leads to independent, changing layers of cementite and α-iron, that is smooth and malleable and that is entitled pearlite because of its looks. So it hard, brittle material reigns over the newest mechanical features from light shed irons, helping to make her or him hard, but unresistant to help you amaze. (更多…)