I hope I don't get in trouble, but I posted this in the basic physics and it occurred to be that it is not basic and would fit better here :) 1. The problem statement, all variables and given/known data Treatment lasts 15 hours. Oven starts at 300 degrees Oven ends at 100 degrees Max temperature: 500 Min temperature: 50 Temperature change cannot be more than 4 degrees C per minute over the course of 10 min It must increase gradually for the first few hours, then fluctuate rapidly as it approaches 100 degrees . 2. Relevant equations What I'm looking for 3. The attempt at a solution I've been fiddling and searching for possible solutions...it would be really helpful if someone could share with me the formula for a complex phase steel.