Stainless steel is a group of iron-based alloys containing at least 10.5% chromium, with added elements like nickel and molybdenum to enhance corrosion resistance, heat resistance, and fabricating properties. The American Iron and Steel Institute (AISI) recognizes over 60 grades of stainless steel. Chromium forms a protective oxide layer on the surface, preventing rust by blocking oxygen from reaching the iron base.
“ Society is increasingly concerned about the health of the natural environment and the impact of materials on ecosystems. This awareness has led to the concept of “greening,” where the environmental performance of materials influences selection decisions.
The production process begins with selecting raw materials, which typically consist of 75-85% recycled stainless steel scrap and alloying elements like chromium, nickel, and molybdenum. This mixture is melted in an electric furnace and transferred to an Argon Oxygen Decarburization (AOD) vessel to reduce carbon content. Gaseous emissions are collected, and dust is recycled to recover metallic compounds. The molten stainless steel is then cast into slabs or ingots, which are further processed into various products through rolling, forging, or drawing.
Criteria for Evaluating the "Greenness" of Stainless Steel
A variety of criteria can assess the environmental performance of stainless steel, including:
Source: Specialty Steel Industry of North America (SSINA).
The News 31/03/2025
On March 28, 2025, a powerful earthquake struck Myanmar, causing extensive damage across the country and leaving over 140 people dead. The full extent of destruction was initially unclear, particularly in Myanmar, where a civil war has further complicated rescue and recovery efforts. Neighboring Thailand also felt the impact, with at least six fatalities in Bangkok following the collapse of a high-rise under construction. While this tragedy unfolded, it raises a crucial question: how do some countries successfully build earthquake-resistant structures? One of the best examples is Taiwan.
The News 28/03/2025
Throughout the history of hydraulic construction, the Chinese have relied on folk wisdom to protect bridge foundations and piers from water erosion and the impact of currents. One of the most unique and effective methods is the use of oysters—marine organisms with the ability to adhere firmly to hard surfaces, forming a natural protective layer for structures. Based on real-world observations, this method has gradually been researched and applied in modern construction, becoming a sustainable building solution.
The News 17/03/2025
Artificial islands are human-made structures built in water bodies, typically in oceans, seas, lakes, or rivers. They are created for various purposes, such as urban expansion, tourism, infrastructure development, military bases, and environmental projects.
The News 05/03/2025
Among the many cultural heritages left by the Nguyen Dynasty (1802 – 1945), Pháp lam Huế (Hue enamelware) stands out as a particularly unique form of tangible heritage. Pháp lam (also known as pháp lang – falang, 琺瑯) is an enamelware product made of a copper base coated with enamel, originating from Central Asia. The craft flourished through five Nguyen emperors, leaving behind exquisite artistic values.
The News 19/02/2025
In an era where sustainability and circular economy principles are transforming industries, the textile sector is at a critical juncture. The European Commission’s Ecodesign for Sustainable Products Regulation (ESPR) aims to enhance textile product durability, repairability, and recyclability. Understanding textile durability standards is crucial for manufacturers, retailers, and consumers who prioritize sustainable fashion and long-lasting materials. This guide explores essential textile durability standards, testing methodologies, and the factors influencing fabric performance, ensuring compliance with regulations and industry best practices.
The News 23/01/2025
Ceramics, a diverse class of inorganic, non-metallic materials, are celebrated for their unique combination of properties that set them apart from metals and polymers. With a history rooted in ancient craftsmanship and an evolving role in advanced engineering, ceramics are a cornerstone of both tradition and modern innovation. This guide explores the technical aspects of ceramics, their types, and applications, making it a must-read for industry professionals, researchers, and enthusiasts alike.
Members, and rustless steel, is an alloy of iron that is resistant to rusting and corrosion. It contains iron with chromium and other elements such as molybdenum, carbon, nickel and nitrogen depending on its specific use and cost){kind=link}