I understand that for stainless steel to be stainless it needs at least 11%
chromium. I also understand that adding nickel is needed in order to produce
an austenitic sturcture at room temperature. But when the nickel is added -
say 8% - why does the chromium need to be higher - say 18%? What would
happen if 14 or 16% chromium were used instead?
- posted 15 years ago