This is the structural material for missile applications at VERY (you underestimate man made weapons in db super, why you think zamasu and black has such a hard time killing them) high temperatures. The mechanical properties of copper, iron, and moly bdenum, tantalum, and graphite( also found in diamond, which goku can't break) were determined at temperatures up to the melting points of the metals and up to 5,200 degrees Fahrenheit for the graphite. That's an indication that a missile can reach those temperatures since you need those ELEMENTS to contain the heat. Heat vision will kill goku. Re entry inside the earth can reach temperatures of up to 300 degrees Fahrenheit, not 3000 degrees Fahrenheit. Because the circuitry from the back of the space shuttle will be damaged by the extreme heat (heat that causes the ship to fly is far less hot and if it was at 3000 degrees it would melt the ship or it would never take off because the material isn't made to take that much heat). The ship can't be engulfed by lava, so it can't be engulfed by the re entry temperatures if that's the case. I estimate Tomis ki blasts being around 500 degrees. 200 degrees makes a big DIFFERENCE in a increases of heat.