thanks, I was talking with people from my university as well-dept of materials and they did tell me the same as you. Need to get over AC1-AC3, but of course in the case of finished piece it will bring problems with dimentions change and so on...
Hello, I would like to ask, is somebody can give an advise, I have a gear, with several teeth, which has passed through hardening process, but it is not done correctly. (Whole tooth is hardened end very brittle) Is it possible to undo hardening process and repeat it again? Heating it up to AC1...