Green Manufacturing Breakthrough: Biodegradable Fasteners Turn E-Waste Into Valuable Resources

Release date:

2025-10-31

As the pace of electronic device updates and iterations accelerates, metal fasteners from discarded devices have become a growing environmental challenge. Recently, a research team from the School of Materials at South China University of Technology unveiled a biodegradable magnesium alloy fastener, offering a promising new solution to the persistent issue of e-waste recycling. The innovative technology has already seen limited-scale applications in the consumer electronics sector.

R&D engineers explain that this fastener is made from high-purity magnesium as its base material, with the addition of biodegradable elements like zinc and calcium to form an alloy. It boasts a tensile strength of up to 320 MPa, making it ideal for securing consumer electronics such as smartphones and tablets. Unlike conventional stainless steel fasteners, this product can fully degrade into magnesium and zinc ions within 72 hours when immersed in a specific alkaline recycling solution. These ions can then be further recovered and refined into industrial-grade raw materials, achieving a recovery rate of over 95%. In natural environments, the degradation period can be precisely controlled—ranging from 1 to 3 years—by adjusting the alloy composition, effectively preventing long-term accumulation of metal waste and reducing environmental pollution.

Pilot data from a leading smartphone manufacturer reveals that adopting these biodegradable fasteners has reduced the metal recycling cost per device by 40%, while boosting recycling efficiency up to three times its previous level. Currently, the technology has already secured 12 national patents, and the team is now refining the formulation specifically for higher-strength applications, such as automotive interior components. Commercial production and widespread adoption are expected to begin by 2026.

Seemingly traditional fasteners are entering a technological boom, with four major trends—high-strength materials, intelligent upgrades, 3D printing, and sustainable development—driving this fundamental component into a whole new phase of growth.

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Green Manufacturing Breakthrough: Biodegradable Fasteners Turn E-Waste Into Valuable Resources

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