Dryer duct, and taking materials from the US strategic reserve of titanium - what's wrong with turkey basting pan? Its thick, can be cut to any size, and lasts for years. If you don't like your screen you can start over easy enough. And its available at any grocery store for a couple dollars.

I just don't see the need for heavier, lighter or far more expensive alternatives. I've always made my stove wind screens from inexpensive, cut up turkey basting pans.