How to maintenance of stainless steel products?

Maintenance of Stainless Steel Products; Correct Cleaning Direction; How to Restore the Luster of Stainless Steel Products?

We often see stainless steel products in our daily life, such as stainless steel trash bins, doors, tables, mailboxes, sinks, chairs, etc. But how can we restore their glossiness constantly? Daily maintenance

 

To clean satin-finished stainless steel products that are commonly seen, such as trash bins, sinks, tables, etc., scrub the surface with a scouring pad moistened with a little bit of dishwasher detergent repeatedly in the satin-finished direction (please do not perform fixed-point scrubbing). Then dry the surface with a dry cloth thoroughly to avoid water marks caused by residual water.

 

For mirror-finished stainless steel products such as flower vases, doors, etc., please avoid rubbing or dragging rough objects on the surface to cause scratches. To clean them, wipe the surface gently with a fine towel moistened with a little bit of dishwasher detergent, and then dry the surface with a dry cloth.

 

Precautions:

1. Please keep the stainless steel surface dry. After cleaning, please wipe off water stains and oil contaminants to keep the surface dry.

 

2. Please do not clean with acid or alkaline detergent, but clean with a dry cloth moistened with natural detergent.

 

What are the differences among SUS #200, #304 and #430 series of stainless steel materials? What are the classification standards adopted by different countries? Are there other types of stainless steel materials?

 

There are roughly 180 types of stainless steel materials, but the most common types are #304 and #430, as well as the recently developed 200 series of stainless steels. In Taiwan, the metal contents of each of the three categories of stainless steel materials have been classified based on their surface treatment, corrosion resistance, and metal contents. They are made in accordance with National Standard CNS-8499-G3164 of the Bureau of Standards, Metrology and Inspection.

 

200 series: Manganese (Mn) 5.5~10%, chromium (Cr) 16~19%, and nickel (Ni) 3.5~6%

300 series: Manganese (Mn) less than 2.0%, chromium (Cr) 15~26%, and nickel (Ni) 6~28%

400 series: Manganese (Mn) less than 1.0%, chromium (Cr) 11~32%, and nickel (Ni) 0~0.6%

 

The higher the content of nickel (Ni) in stainless steel, the better it is to resist rust. Therein, the 300 series is considered the best stainless steel material capable of protecting against external erosion, while the 200 series has a high content of manganese. To lower production costs, some unscrupulous vendors may use 200 series stainless steel with a high content of manganese. A long-term use of manganese-excessive products is prong to endanger the risk of neurodegenerative diseases and other symptoms. Meanwhile, 400 series stainless steel has a lowest content of nickel, and so more easily to get rusty than the 300 series.

 

Different countries have established different stainless steel norms in their own markets. In Taiwan, they are listed in CNS standards; the United States, AISI standards; mainland China, GB standards; Japan, JIS standards; Germany, DIN standards, etc.

 

For the most commonly seen 304 stainless steel on the market, Japan uses SUS 304 (S stands for steel category, and US for stainless) to indicate 304 stainless steel, the US standard is AISI 304. In mainland China and European countries, they adopt another indication method depending on the contents of chromium and nickel elements in stainless steel. For example, 18% chromium and 9% nickel is seen on the market as stainless steel 18-9.