Zinc (Zn) is a very common element and can take many forms from metals to supplements. It is inexpensive, is often used as a base metal, and accepts various platings well.
Characteristics: Zinc is softer than steel and is easily poured into molds or cast into various shapes. Its good corrosion resistance and low allergenicity make it an ideal choice for those with nickel allergy.
For more information regarding nickel free or nickel safe materials, see Nickel Free Metal.