Zinc Sustainability | Die Casting

Zinc’s sustainability stems from its recyclability, low environmental footprint and versatility while supporting sustainable initiatives. Zinc alloys are recognized for their eco-friendly attributes which is why designers should consider Zamak alloys in new product development. Many factors collectively position zinc as a valuable and sustainable resource in manufacturing.

Recyclability

Zinc alloys are highly recyclable with no loss of properties. Recycling rates are high, with zinc recycling often exceeding 80%. Currently, 30% of all zinc produced worldwide comes from recycled or secondary sources. This reduces the demand for virgin zinc ore extraction and minimizes environmental impact associated with mining.

Low Energy Consumption

The production of zinc castings from its alloy requires relatively low energy inputs compared to many other metals. The zinc alloy melting point is under 800 (F) degrees, compared with aluminum alloys which melt at over 1000 degrees (F). Processing zinc reduces energy consumption during manufacturing, leading to lower greenhouse gas emissions and a smaller carbon footprint.

Non-Toxicity

Zinc alloys are non-toxic and safe for use in various applications, aligning with environmental and health regulations.

Abundance and Availability

Zinc is naturally abundant in the Earth’s crust, with significant global reserves. This ensures a stable supply for industrial and commercial uses without significant depletion concerns. Zinc is one of the most versatile and essential materials globally, ranking as the fourth most used metal after iron, aluminum, and copper. Its availability makes it a sustainable choice for various applications.

Zinc is Natural

Zinc is the 24th most abundant element in the Earth’s crust and has been present since the formation of earth. All life on earth is developed in the presence of zinc. Through natural erosion processes, a small part of the zinc in soil, rock and sediment is constantly moved and transported through the environment.

Durability and Longevity

Zinc alloys are known for their corrosion resistance and durability, extending the lifespan of products in which they are used. This reduces the frequency of replacements and associated environmental impacts.

Regulatory Compliance

Zinc mining and production adhere to stringent environmental regulations in most countries, ensuring responsible extraction and processing practices that minimize environmental impact.

Versatility

Zinc alloys are highly versatile and can be used in a wide range of applications across various industries including automotive, electronics, construction, and consumer goods.

Switching from Aluminum to Zinc Alloys

Researchers have found that using zinc alloys instead of aluminum can improve longevity and sustainability. The environmental impact of zinc extraction is lower and the quality of parts produced from zinc alloys is higher.