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showcases its effectiveness. Unlike galvanised pedestrian walkways requiring maintenance every 5 to 7 years, the painted 3CR12 structure resists filiform corrosion, remaining untouched after years of service. Debunking the Stainless Steel Cost Myth Addressing the perception that stainless steel is an expensive option, Sassda underscored the long-term cost efficiency of the material. Despite the high initial acquisition costs, these costs are offset by minimal maintenance and replacement expenses throughout the project lifespan. Comparatively, the initial costs of 3CR12 align closely with galvanised carbon steel, and the material’s 96% recyclability further enhances its total life cycle cost efficiency. A Call for Sustainability: Environmental Stewardship Despite the high carbon footprint associated with stainless steel production globally, it has a minimal environmental impact during installation and its unparalleled post-lifespan recyclability rate. This point was emphasised by a case study at a hydrometallurgical plant in Chile. Material selection
for a walkway across corrosive areas in the plant considered three options: Mild steel (the cheapest option), requiring coating maintenance every four years; 3CR12 (unpainted), requiring cleaning every 15 years with high-pressure water; and Lean Duplex (an expensive material with exceptional mechanical and corrosion characteristics) requiring cleaning every 15 years with high-pressure water. In addition to highlighting the sustainability of life cycle costing, the message resonates that while stainless steel production in South Africa contributes to a high carbon footprint, its physical installation has minimal environmental impact. The material’s post-lifespan recyclability rate stands unbeatable among other materials, making stainless steel a wise, cost-effective, environmentally friendly, and sustainable choice. As Sassda advocated for utility ferritic stainless steel, the hope was for political will and a shared vision in the initial market space to drive these wise choices forward. In the intricate dance between economic growth, industry development, and environmental responsibility, utility ferritic stainless steel emerges as a key player, unlocking opportunities for the South African stainless steel industry’s sustainable future.
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Issue 3– 2023
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