chromium foil

https://www.attelements.com/chromium-metals-and-alloys/chromium-foils(cr-foils).html

Chromium is a kind of lightweight metal with blue-silvery white color. It is lustrous, hard, and brittle with high corrosion resistance and a high melting point. Chromium metal is silvergray, lustrous, very dense, hard metal. It takes a high polish and has a high melting point. It is also odorless, tasteless and malleable and does not suffer from hydrogen embrittlement. Chromium metal is remarkable for its magnetic properties. it is the only elemental solid which shows antiferromagnetic ordering at room temperature (and below). Chromium Foil, like most metal foils is produced from the flattening of cast ingots. It is used as a coating, and towards thin film deposition on substrates such as glass or metal. Its applications are seen in medical treatment, electronics, and more.