2020-2-23 · I think the lead will be 99% pure. So lead melts at 327,52 °C, then if you heat it and melt it with 430 C or with 700 C or with 1000 or 1100 C there should be no real difference then, as you say, it should not be hazardous at 1000 C, which is also true for 1100 C i guess?, because that's the temperature i might want it melted at, either 1100 C or 1000 C, depending on what kind of furnace i