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What is the difference between 403 and 304 stainless steel

403 stainless steel contains 16%-18% chromium and basically does not contain nickel metal. 304 stainless steel contains more chromium and nickel metal, the corrosion resistance of 403 stainless steel is relatively poor..

2023

The harm of unqualified stainless steel to the body

The greatest possible hazard of unqualified stainless steel is heavy metal poisoning. The most likely source of unqualified stainless steel is the recycling of waste steel. If the smelting technology is not good, there will be various metal elements remaining, which may be lead, mercury, arsenic, thallium and other toxic substances. Yes, the largest hardness of the human body is the skull, which is equivalent to copper. Stainless steel tableware can easily cause various physical injuries to any part of the human body except teeth. If swallowed in the abdomen, chloride ions in gastric acid will corrode stainless steel and cause chemical injuries. The harm of unqualified stainless steel to the body? There is a high content of chromium and nickel in stainless steel components, and unqualified stainless steel pots or improper use will have safety hazards. Stainless steel pot is made of iron chromium alloy mixed with nickel, molybdenum, titanium, cadmium, manganese and other trace metal elements, these trace metal elements are harmful to the human body. If an inappropriate stainless steel container is used to hold food containing salt, soy sauce, vinegar and other properties for a long time, the electrolyte in these foods will react with stainless steel, and harmful substances will be dissolved. Chromium and nickel in the composition may be dissolved by corrosion to form chromium and nickel compounds. Nickel is the most common allergenic metal. About 20% of people are allergic to nickel ions. The number of female patients in the allergic population is higher than that of male patients. When in contact with human body, nickel ions can penetrate into the skin through pores and sebaceous glands, thus causing skin allergy and inflammation. Its clinical manifestations are itching, papular or papular vesicular dermatitis and eczema, accompanied by lichenification. Once sensitization occurs, a nickel allergy can persist indefinitely. More serious is the poisoning caused by excessive intake of nickel. Human daily intake of soluble nickel 250mg will cause poisoning, the unique symptoms are dermatitis, respiratory disorders and respiratory tract cancer.

2023

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Guangkai Hardware Products Co., Ltd

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Address: Jinhe Road, Heping Village, Caitang Town, Chao'an District, Chaozhou City, Guangdong Province

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Products include stainless steel quilt clips, hangers, socks racks, hooks series, large kitchen racks series products