As posted, the diamter of the part is important to calculate.
Rule of thumb for carbon steel, about .0006" per inch of diameter per 100 degrees delta T.
Depending on the alloy of the stainless it could be more or less (usually less).
If the part is 1" in diameter, it will theoretically grow half as much than a 2" diameter part heated to the same teperature.
400 series stainless behaves itself, 300 series can do funny, unpredicted things. I've heated large diameter 304 and 316 pieces before only to have the bore collapse instead of grow. The heating technique makes all the difference. If the piece is large you need to heat the outside first and then the inside.
When trying to use temperature to remove a part (whether hot or cold) you need to make the temperature change as quickly as possible in order to ensure the heat or cold doesn't transfer to the other parts.
My favorite technique is to use either one or two rosebud torches. Cooling to remove a part is more difficult but I've used liquid N2 before with sucess. It has it's own dangers and must be handled carefully by qualified and intelligent people tho.
BTW, the very best high temperature anti-sieze compound I've found for most stainless alloys is milk of magnesia.
And how do you make your computer do the little "degree" O? Mine doan do that. I hafta speel it out
