Hi Conner,
Are you planning a trip to the Sun in the future :) ? I guess it depends what material you are talking about.
For human body, it is not only a problem of temperature. Outside of the Earth's atomsphere, we have not enough oxgen,
and we cannot withstand the radiation. So we are pretty useless without the protection of the atomsphere.
But a NASA satellite called Solar Probe will be traveling towards the Sun in several years and will get as close as
8.5 solar radii, or about 6,000,000 km (3,700,000 mi).