天气转凉，保温杯重新回到人们的日常生活。出门遛弯、户外活动，带个保温杯，随时随地就能喝到热水。然而，这种看似普通的日用品，却可能暗藏健 康隐患。 什么样的保温杯不能用？如何挑到一个合格的保温杯？ 01哪种保温杯不能用？ 保温杯大多是不锈钢材质，耐高温且保温性能好。不锈钢材料中，有三个"代号"很常见，分别是201、304和316。 保温杯不能使用201材质 201不锈钢不是食品级材料，属于工业用品材料，大部分用于制作装饰管、工业管和表带等。 201不锈钢的锰含量高，耐腐蚀性差，如果将其作为保温杯的内胆，长时间存放饮品可导致锰元素析出，热水可能直接变"毒水"。金属锰是人体必需的微 量元素，但过量摄入锰会伤身，尤其是会伤害神经系统。 看标签标识 北京市消费者协会曾测评约50种保温杯，结果显示：有19种保温杯，因为重金属含量超标而被标记为"不合格产品"。这些不合格的保温杯，大多使用了非 国标的不锈钢材料，也就是201材质。 304、316材质符合安全标准 保温杯的不锈钢材质应符合《食品安全国家标准 食品接触用金属材料及制品》(GB 4806.9-2023)，标准中规定了重金属含量及迁移量指标。 | 金属基材和金属镀层 ...

Core Insights - Titanium cups are emerging as a new "social currency" among the middle class, driven by a consumption upgrade trend led by Japanese outdoor brands and participation from domestic tech companies and beverage brands [1][3][5] Market Dynamics - China has become the core growth engine of the global titanium thermal cup market, with a market size of $21.60 million in 2023, accounting for approximately 28% of the global share, and expected to grow to $48.52 million by 2030 [12][38] - The pricing of titanium cups is significantly higher than that of traditional stainless steel cups, with consumer choices primarily in the range of 111 to 499 yuan, making up 60% of the market [8][9][30] Consumer Behavior - Titanium cups are particularly popular among young consumers aged 18 to 35, with sales exceeding expectations by 300% during the 2025 Spring Festival [4][12] - The appeal of titanium cups lies in their lightweight, durability, and aesthetic qualities, which resonate with consumers seeking a higher quality of life [26][37] Competitive Landscape - The market for titanium cups is witnessing intense competition, with various players from traditional cup manufacturers to tech giants and beverage brands entering the fray [5][6] - Brands are focusing on different aspects, such as cost-effectiveness from tech companies and alignment with brand identity from beverage brands [6][8] Material Characteristics - Titanium, once exclusive to aerospace, is now widely used in everyday products, showcasing its versatility and appeal [2][15] - The material's properties, such as corrosion resistance and lack of metallic taste, contribute to its growing popularity compared to stainless steel [33][36]