Zinc is a crafting resource in Astroneer. It is primarily a manufacturing material rather than a terrain or exploration item, and its main role is to supply a broad set of recipes in the printer and related crafting interfaces. It is also consumed in a separate activation use for a gateway-related structure.
In practice, Zinc is best treated as a mid- to late-game supply item that you keep on hand whenever you are expanding your equipment options. The available recipe data shows that it is used across multiple crafting groups, including one set of seven outputs, another set of eight outputs, a single recipe that requires two units, and a further eight-item set with costs ranging from two to three units per craft. That makes Zinc a recurring ingredient rather than a one-off requirement, so shortages can slow down several different progression paths at once.
Zinc is used to craft a number of items, spanning multiple recipe groups.
Because Zinc appears in so many recipes, it is worth keeping an eye on your stock whenever you are preparing to build or upgrade equipment. Even when a specific recipe only asks for a small amount, repeated use across many different items can make it a surprisingly important resource over time.
