不銹鋼是合金制品，只要是符合國家標準的不銹鋼水杯，其中各種金屬含量指標對人體健康影響極小，這種杯子在正常使用的情況下裝普通開(kāi)水，不需要太擔心。

Stainless steel is alloy product, as long as it is the stainless steel cup that meets national standard, among them various metal content index affects human health very little, this kind of cup holds ordinary boiled water under normal use, do not need to worry too much.

常見(jiàn)的水杯不銹鋼材質(zhì)有304不銹鋼和316 不銹鋼，316在耐酸堿、耐高溫的能力要比304強。不銹鋼水杯的特點(diǎn)就是不銹。

Common water cup stainless steel material has 304 stainless steel and 316 stainless steel, 316 in acid and alkali resistance, high temperature resistance ability is stronger than 304. Stainless steel cups are characterized by stainless rust.

例如米家的保溫杯，采用316L不銹鋼內膽，由18%鉻、10%鎳、2%鉬及鐵組成，鎳含量較高，耐酸、抗腐蝕性比一般的不銹鋼要好；通過(guò)復雜的工藝，把杯身的焊縫剝除，并且用電解技術(shù)把不銹鋼表面的氧化層剝離，形成光潔的鏡面內壁讓雜質(zhì)和細菌不容易附著(zhù)，干凈無(wú)殘留更容易清洗。得益于316L不銹鋼良好的延展性，能夠將0.3mm的內膽旋薄至0.08mm。對比同等級的產(chǎn)品，內壁厚度減少73%，相同的容量，體積更小。

For example, the vacuum cup adopts 316L stainless steel tank, composed of 18% chromium, 10% nickel, 2% molybdenum and iron. The nickel content is high, acid resistance and corrosion resistance are better than general stainless steel; Through complex process, the welding seam of the cup body is removed, and the oxide layer of the stainless steel surface is stripped by electrolysis technology, forming a smooth mirror inner wall for impurities and bacteria not easy to attach, and clean without residue is easier to clean. Thanks to the good ductility of 316L stainless steel, the 0.3mm liner is thin to 0.08mm. Compared with the products of the same grade, the inner wall thickness is reduced by 73%, the same capacity, the volume is smaller.

小萬(wàn)在此有一些使用建議，比如不要盛放一些酸性飲品，就像果汁、咖啡、碳酸飲料等；還有不可長(cháng)期用這種不銹鋼材質(zhì)的杯子裝茶、醬油、醋、湯等，以免杯體產(chǎn)生腐蝕性，析出對人體有害的鉻金屬。

Xiao Wan has some suggestions here, such as do not hold some acidic drinks, such as fruit juice, coffee, carbonated drinks, including tea, soy sauce, vinegar, soup to avoid the corrosive body and the chromium metal harmful to human body.