美国专家也看不懂！中国为何又把顶尖材料，给干成“白菜价”了？

Core Insights - The article discusses China's breakthrough in producing high-purity iron, specifically 5N-grade ultra-pure iron, which has historically been dominated by Japanese and American companies [1][2] - The Chinese team, led by Hebei Longfengshan Group and Shanghai University, developed a new production method that significantly reduces costs and increases supply stability [2][3] Group 1: Production Process - The Chinese team utilized local high-purity pig iron as raw material, avoiding the high costs associated with traditional methods used by Japan and the U.S. [2] - They established the Iron-Based New Materials Research Institute in 2020 and launched a project to achieve 4N-grade purity, with the first production line achieving an annual capacity of 80,000 tons [2][3] - By September 2023, the team successfully produced the first batch of 5N samples with a purity of 99.999% [2] Group 2: Market Impact - By June 2024, the purity reached 99.9992%, surpassing Japanese and American standards, leading to a significant influx of orders from global buyers [3] - The price of the new high-purity iron dropped to one-fifth of the original price, prompting Japanese companies to cut their prices to one-third in response [3][5] - The shift in market dynamics has positioned China as a new supplier, reducing the market share of Japanese and American firms [5] Group 3: Technological Advancements - The production process involves a three-step method: pyrometallurgical pre-treatment, electrolytic refining, and vacuum zone melting, utilizing self-developed ultra-high vacuum furnaces [2][3] - The team has filed 42 patents to protect their innovations and ensure competitive advantage [5] Group 4: Broader Implications - The use of domestically produced high-purity iron has improved the yield of 28nm chips, increased the lifespan of aerospace components, and reduced energy losses in power grids [7] - The project has been recognized with a Metallurgical Science and Technology Award in 2025, indicating its significance in the industry [7] - This development reflects a broader trend of China moving from reliance on imports to becoming a technology exporter, enhancing strategic security [7][9]