Stainless filter screens

[NuraNori]

My dad's a machinist so I've heard a lot about different types of metal...

Stainless steel should indeed remain rust free...however it is fairly expensive. Have you ever bought a stainless steel knife and gotten a rust spot on it? I have. Turns out you can coat something in a stainless steel coating and still sell it as true stainless steel. So personally I wouldn't trust it...

If it's not too expensive you can always buy one stick it in a glass of saltwater for a month and see if it holds up...

I guess I've just become skeptical of "stainless steel" over the years...