The melting point of iron doesn't depend noticeably on pressure with the range of atmospheric pressures, as you can see from the flat lines in the phase diagram

The melting point of iron doesn't depend noticeably on pressure with the range of atmospheric pressures, as you can see from the flat lines in the phase diagram at https://en.wikipedia.org/wiki/Iron#/media/File:Pure_iron_phase_diagram_(EN).png https://en.wikipedia.org/wiki/Iron#/media/File:Pure_iron_pha...