Shenzhen Alu Rapid Prototype Precision Co., Ltd.

Die-cast zinc is generally not considered safe for food contact unless specifically treated or coated with a food-grade material. Here’s why:

Is die cast zinc safe for food?

1.Material Composition: Die-cast zinc, typically made from alloys like Zamak (zinc with aluminum, magnesium, and copper), may contain trace impurities or alloying elements that could potentially leach into food, especially under acidic or high-temperature conditions. While zinc itself is a trace mineral needed by the human body, excessive exposure or ingestion from leaching could pose health risks.

2.Lack of Antibacterial Properties: Unlike brass or copper, which have natural antimicrobial properties (as noted earlier), die-cast zinc does not effectively inhibit bacterial growth, making it less ideal for food-related applications where hygiene is critical.

3.Coatings and Finishes: Die-cast zinc parts are often coated with materials like chrome, nickel, or paints to enhance corrosion resistance or aesthetics. These coatings may not be food-safe and could flake or degrade over time, potentially contaminating food.

4.Regulatory Standards: For food contact materials, regulatory bodies like the FDA (U.S.) or EFSA (Europe) require materials to meet strict safety standards. Die-cast zinc is not commonly certified for direct food contact unless it has a food-grade coating, such as an FDA-approved epoxy or enamel, explicitly designed for such use.

5.Practical Use: In practice, die-cast zinc is used in food-related equipment (e.g., parts of kitchen appliances or utensils) but only in non-food-contact areas or when coated with food-safe materials. For direct food contact, materials like stainless steel (e.g., 304 or 316 grades), food-grade plastics, or glass are preferred due to their inertness and compliance with safety standards.