# How to separate platinum from steel?

I'm currently extracting some platinum from an electrode. One part seems stuck in some way (possibly welded) to a piece of steel. I'm guessing it's steel because it's magnetic. I did a heat test on the piece. Results:

Left side is platinum, right side suspected steel, and the platinum is not oxidized, as expected. What would be the best/easiest way to

1. determine if this is actually steel/iron;
2. dissolve or otherwise separate it?

My resources are limited, I've got a propane torch and household items, and can of course order chemicals if needed, but no acetylene torch or anything.

• Maybe $\ce{HCl}$, which will attack steel and not platinum? – Todd Minehardt Jan 7 '18 at 2:08