What materials are metal keychains made of?

Iron: Iron is one of the most common metal keychain materials. It has good strength and durability and is relatively inexpensive.

Stainless Steel: Stainless steel is a corrosion-resistant alloy that is perfect for keychains. It is strong, durable and does not rust easily.

Copper: Copper is a commonly used metal keychain material that has good electrical conductivity and oxidation resistance. Key fobs made of copper usually have a high degree of texture and weight.

Zinc Alloy: Zinc alloy (commonly zinc-aluminum alloy) is also widely used to make keychains. It has good corrosion resistance and machinability, and can be surface treated to add to the appearance.

In addition, metal key fobs may be plated or coated with other materials to add a cosmetic effect, prevent rusting, or provide an additional layer of protection. For example, a variety of plating such as chrome, nickel, and gold plating may be applied to metal key fobs.