Nickel foil is different from stainless steel：

Nickel foil generally refers to pure nickel or nickel alloy. The basic component is nickel. Nickel is a silver-white metal. It has magnetic rights and good plasticity. It has good corrosion resistance, nickel is similar to silver white, hard, ductile and ferromagnetic metal element, it can be highly polished and corrosion resistant. After being dissolved in nitric acid, it turns green. Mainly used in alloys (such as nickel steel and nickel silver) and as a catalyst (such as Raney nickel, especially as a hydrogenation catalyst).

Stainless steel foil refers to stainless steel, the main component is iron, nickel, chromium and other elements are added. Stainless steel (Stainless Steel) is the abbreviation of stainless and acid-resistant steel. It is called stainless steel that is resistant to weak corrosive media such as air, steam, and water, or is stainless steel; and chemically resistant to chemical corrosion media (acid, alkali, salt, etc.) Corrosion steel is called acid-resistant steel. Due to the difference in chemical composition between the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical media corrosion, while acid-resistant steel is generally non-corrosive.