Which risk increases with increasing tin quantities beyond optimal proportions during Bronze-Age copper smelting?

💡 Explanation

When tin exceeds optimal levels in bronze, tin-rich intermetallic compounds form because the alloy composition shifts, reducing malleability due to phase separation. Therefore reduced malleability results, rather than melting point variability, seawater corrosion resistance decrease, or more oxide formation, which stem from different metallurgical processes.

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