What are the hazards of inferior stainless steel kitchenware?

Low-quality stainless steel cookware often uses non-food-grade materials, with improper proportions of elements such as manganese, chromium, and nickel. Long-term use can bring multiple health and usage risks.

Such cookware has excessive manganese content and very low nickel content, with extremely poor corrosion resistance. When in contact with seasonings like salt, vinegar, soy sauce, or subjected to high-temperature heating and repeated scrubbing, it easily releases harmful substances such as heavy metals manganese, chromium, and lead. Long-term excessive manganese intake can damage the nervous system, causing dizziness, memory decline, and emotional instability; hexavalent chromium has potential carcinogenic risks and can also irritate the skin and respiratory tract.

At the same time, low-quality stainless steel is prone to rust, peeling, and flaking. Rust and metal fragments mixed into food can irritate the digestive system, causing nausea, abdominal pain, diarrhea, and other acute discomforts, and long-term consumption can increase the metabolic burden on the liver and kidneys. Its material strength is poor, making cookware prone to deformation and cracked bottoms, which may lead to leakage or localized overheating during cooking, posing safety risks such as burns and fire hazards.

In addition, most of these products lack official quality inspection marks and do not meet the national safety standards for food contact materials. Long-term use is equivalent to continuous ingestion of trace heavy metals, posing greater risks to the elderly, children, and pregnant women. When purchasing, it is necessary to look for food-grade labels and relevant national standard certifications.