There are several metal types used for crafting mates, the most common being stainless steel, aluminum, nickel silver (“alpaca”), and silver — metals are also frequently used just to coat the rim of a calabash or wood mate. Metal mates are non-porous, so they’re easy to clean and can be used right away with no need to be “cured.” Quality stainless steel mates are typically made from 18/8 food-grade steel — the same standard used by brands like Stanley — which resists corrosion and won’t affect the taste of the yerba.
Why Choose Metal
Metal mates are the most durable option available, able to withstand drops and daily wear far better than calabash, ceramic, or glass. Many stainless steel mates also feature double-wall insulation, which keeps mate hot for hours — a major advantage for drinkers who like to take their time or bring their mate on the go.
Types of Metal
Stainless steel is the most common and practical choice, prized for its durability and resistance to corrosion. Aluminum is lighter but less durable. Nickel silver, known as “alpaca,” is a traditional Argentine choice often used for decorative coatings and detailing rather than the full body of the mate. Solid silver mates exist too, but are rare and mostly collector’s items due to their cost.
Care and Maintenance
Metal mates are the lowest-maintenance option: rinse with water after each use, and they’re ready to go again. Unlike wood or calabash, there’s no risk of mold or cracking from temperature changes. Over time, some metals like alpaca can develop a natural patina, which many drinkers consider part of the mate’s character. Looking for the traditional experience instead? See our guide to calabash mate.
