It can be 'realigned' if it is out of alignment. It is a one piece aluminum dropout/hanger. Unlikely to find a replacement due to age of frame.
If the hanger needs aligning take your time and use a proper alignment tool. If you just crank on it it is possible it will snap and then you are SOL.
If realigned many without a problem by taking my time and making small adjustments. I've never had to use heat. I have watched a coworker snap one because he just cranked on it...dead bike on a scrap pile.
That dropout is one of the reasons why replaceable hangers were invented...
Good luck and keep us informed.