At what temperature does solidification start for copper?

The correct starting temperature for the solidification of copper is 1083 °C. This temperature is significant because it marks the phase transition point from liquid to solid for copper as it cools. As copper approaches this temperature, it begins to form solid crystals from the molten state, resulting in the material transitioning from a liquid to a solid form.

In metallurgy, understanding the solidification point is essential for processes such as casting, where the material needs to be liquid for pouring into molds and solid to form the desired shape. The accurate identification of this temperature helps engineers and metallurgists in controlling the cooling rates to obtain specific microstructures, which can influence the mechanical properties of the final copper product.

The other temperatures listed are not representative of copper's solidification point. For instance, the temperatures that are significantly higher than 1083 °C suggest either not being related to copper or potentially being the melting points of other materials, which would not inform on solidification processes for copper specifically.