@steven-cavagnolo @ole-olson @steve-d I believe Chrome is the metal that increases the wear characteristics of valves and reduces their magnetic feature. I remember Stellite valves as being used in truck other extreme applications.

Steve D, I don't think nickel is magnetic. Only ferris metal is magnetic. Aside from the rare steel penny from 1943(?) no American coin is magnetic. In the old days, vending machines used magnets to detect and remove fake coins.

Mike

@35mike " Nickel is a common metal used in manufacturing everything from coins to high-tech batteries, making its magnetic properties a frequent subject of curiosity. The simple answer is that pure nickel is indeed attracted to magnets, and quite strongly. This attraction is not a universal trait among metals, but rather a specific ." copied from a Google search.

I'm no metallurgist but, depending on the alloys, some stainless is magnetic.

@tiny 

True.

Some stainless is magnetic and some isn't.

Also true... if you are one of those people who has a refrigerator covered in magnetic stuff, and you are buying a new stainless steel refrigerator, you need to take a magnet along to the store to see if it will stick to the refrigerator you are looking at buying.  🙂

Some will, some won't.  Been there done that.

@tiny I refer to that as cheap stainless. I think it will also form rust over time.

I very much identify with the people who take their refrigerator magnets with them to the store when they buy a new fridge. I took mine to the imaginary store because I ordered ours on line to be delivered to the store. I did search to make sure it was magnetic stainless because we have more than a few magnets on ours. If you look close you can almost see the fridge.

@steve-d I stand corrected. My google search says that it is about 1/3 as magnetic as iron. This property is lost when mixed with other non magnetic such as copper. The American nickel coin is 75% copper.