#that's around 1540°C and 900°C respectively for those of us who use real units

[whats-in-a-sentence]

Iron farm tools spread, and fifth-century-BCE blacksmiths learned to use bellows to heat iron ore to 2,800°F, at which point it melted and could be cast.*

*By the first century BCE cast iron was common in China; wrought iron, made by heating ore to 1,650°F and repeatedly hammering the soft "bloom" this produces, was the only technique known in the West until the fourteenth century CE.

"Why the West Rules – For Now: The patterns of history and what they reveal about the future" - Ian Morris