Uses & Applications

Applications and End-Uses for Zinc

Zinc (Zn) is a medium-criticality base metal with annual global production of approximately 13 million tonnes. Zinc is the fourth most widely used metal globally, primarily employed in galvanizing steel to prevent corrosion. It is also essential for die-casting alloys, brass production, and zinc oxide used in rubber manufacturing and sunscreen. Zinc's role in protecting infrastructure from corrosion makes it fundamental to construction and transportation industries worldwide.

Key Applications

The primary end-uses of Zinc span multiple sectors. The following applications represent the most significant sources of global demand:

• Galvanizing steel and iron - Key alternatives include Aluminum coatings, paint, plastic coating. Hot-dip galvanizing provides the most cost-effective and durable corrosion protection for steel; alternatives exist for some applications but none match galvanizings combination of cathodic protection and barrier protection
• Die casting alloys - Key alternatives include Aluminum die casting, magnesium die casting, engineering plastics. Zinc die casting offers superior precision and surface finish at lower tooling cost than aluminum; aluminum preferred for lightweight applications; zinc preferred for dimensional precision and strength
• Brass production - Key alternatives include Stainless steel, aluminum, plastics. Brass (copper-zinc alloy) provides unique combination of corrosion resistance, machinability, and aesthetics for plumbing, valves, and decorative applications
• Zinc oxide in rubber and ceramics - Zinc is valued in zinc oxide in rubber and ceramics for its unique physical and chemical properties that are difficult to replicate with alternative materials.
• Batteries and electronics - Zinc is valued in batteries and electronics for its unique physical and chemical properties that are difficult to replicate with alternative materials.

Product Forms and Specifications

Zinc is commercially available in 4 primary product forms, each serving different industrial requirements:

Demand Outlook

Zinc is included on the USGS Critical Minerals List, reflecting its importance to the U.S. economy and national security. Growing demand from electrification, digitalization, and defense modernization is expected to place additional pressure on the Zinc supply chain through the end of this decade.