The base material determines the rivet's durability and application method. Brass bases are the industry standard for high-quality garments because they are rust-proof and non-magnetic, making them ideal for export to markets with strict needle detection requirements. For budget-friendly decorative items, iron or alloy bases may be used, but they must have electroplated finishes (such as nickel-free silver, gold, or gunmetal) to prevent oxidation. Always ensure the plating is lead-free and cadmium-free to comply with international safety standards like REACH or CPSIA.