Sorry, there has been some confusion - I didn't mean to ever give the impression that this is "chrome plated," per se, I meant that if it is stainless, it includes chromium (which, I understand, is reactive with oxygen at melt-temp).
Reasons for estimating this is 303 or 304 stainless are: 1) it used to be a cheap tea kettle; 2) walmart's website lists the closest current equivalent as being made of "poished stainless steel"; 3) it is non-magnetic; 4) "high" melt temp (it resisted a previous attempt to melt in a backyard forge).
If I can find a way of doing a definitive analysis, I will, but for now, it appears to be stainless.