Stainless steel raw materials are soft, while leading zinc alloy raw materials are hard and bright

1. Take the thing to a spectroscopic instrument for chemical analysis (Most accurate) 2 Apply acid and alkali to it, and after 5 minutes, check for any chemical changes (Short test) (If it is a product with an electrically plated surface, the surface will immediately corrode after 5 minutes!) 3 Use a small knife to scratch the surface, paying attention to" Scrape" Not" Stroke" You will find that maintainless steel only has very few scratches, and the raw materials will not be scratched out (Short test) (If it is a product with a surface electroporation, a scratch will scratch out the surface electroporation layer.) 4 Soak in concentrated salt water for 200 hours without any changes (Short test) 5 This product has not seen any rust spots after 3 years of use (Time quiz)

So we must be careful to see all types of stainless steel failures on the market I know SENTO&# 039; Stainless steel faucet is truly American standard 304 stainless steel Advanced appearance It&# 039; S also practical

Wipe with sandbatch and see how stainless steel is rubbed, with a consistent heart As for alloys, copper, iron, etc., they all have coatings, and it&# 039; S easy to wipe them!

Determine whether it is steel or iron, and then use a magnet to attract it. If it is not magnetic, it is stainless steel

First, determine if it is steel, then use a magnet to attract it. If it is non magnetic, it is stainless steel

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