Never thought about the heat soak in Stainless material. Knowing that now I would opt for mild steel. From what I have read you want heat to stay in it.Sorry when I read that I think I need to clarify a little more stainless takes much more power to cut but when your done cutting the pieces are much cooler to the touch than when you cut mild steel. sorry I'm new to this if you couldn't tell and any help is much appreciated!