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← HistoryWhich risk increased when Song Dynasty iron foundry output targets were aggressively increased?
A)Warped cast iron cookware
B)Localized metal corrosion failures
C)Decreased tensile strength occurs✓
D)Increased wrought iron stratification
💡 Explanation
Decreased tensile yield strength risks increased when hastily-produced iron results from incomplete processing. Quicker smelting often sacrifices thorough removal of impurities via slag tapping, which impedes lattice development because dislocations remain trapped, therefore weakening the alloy, rather than forming ductile wrought iron bars.
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