I agree , need more info,,,,we in the welding business need to start accepting the fact that generic words and terms JUST DON'T CUT IT !! Cast is a process, not a metal, stainless is a generic term meaning one of over 80 different alloys ( all having their own individual properties and requirements ) and the heat treat of the part is what gives it it's character. So next time the question comes up let's try to be a little bit more specific,,,,,,, what's the process, the actual base metal grades, possible heat treat, filler metal, welding parameters, the intended use of the part, skill level of the welder.