Repair wire (what is the real name?)

[Yansi]

It will likely not, unless you are soldering at like 350+ °C

The coating is quite resilient even on the solderable-grade wires.

Also, simple trick to remove the last millimeter of the enamel coating is to stick the wire to a blob of molten solder under a bit of flux. The solder will slowly creep under the enamel from the end of the wire, helping to destroy to enamel.

If you need to scrape anything with your soldering iron tip, then you're using it wrong and the tip gets destroyed very quickly. Iron tips aren't meant to be scraped, or scraped with. The coating will get damaged and solder then won't stick to it properly.

[Psi]

that was my point

[james_s]

I use Kynar wire, it's intended for wire wrapping but works very well for rework jumpers. The insulation can tolerate the heat of soldering without melting into a mess.