Stainless steel is one of the most common and popular materials used to make items that come into contact with food. It is well-liked because it can handle high heat and does not rust easily. However, there are many types of stainless steel on the market today, with different quality levels and sources. Choosing the right type is very important, especially for products made for children. Below are some ways to choose safe types of stainless steel
Harmful Effects of Using Low-Quality Stainless Steel
Using low-quality stainless steel, especially for products that touch food or are used in high heat, can cause serious problems:
1. Release of Heavy Metals and Toxic Substances
Poor-quality stainless steel may contain harmful metals like lead, cadmium, or too much nickel. When used with hot or acidic food, these metals can leak out and cause poisoning or long-term health issues.
2. Rust and Corrosion
Bad stainless steel can rust when exposed to water or moist air. Rust not only looks bad but can also mix with food, causing stomach problems or infections.
3. Short Product Life
Products made from cheap stainless steel are often thin and break easily under pressure or heat. This means they need to be replaced often, wasting money and resources.
4. Long-Term Health Risks
Using unsafe stainless steel regularly can lead to chronic illnesses like hormone issues, allergies, liver or kidney damage, due to the build-up of heavy metals and toxins in the body.
How to Choose Safe Types of Stainless Steel?
1. Check the Steel Grade (e.g., 304, 316, 430)
Grades 304 and 316 are the most common and safest types for food contact. They resist heat and rust very well.
On the product or its packaging, look for labels such as:
- SUS304 / 18-8 / 304 Stainless Steel
- SUS316 / 18-10 (a higher-grade, often used in medical tools)
If there’s no label showing the steel grade, be careful before buying—it might be low quality.
2. Buy from Trusted Brands
Choose products from brands that are certified for food safety or come from strict markets like the EU, Japan, or the USA.
Also, buy from shops or sellers that can give you invoices, certificates of origin (CO), or quality certificates (CQ) if needed.
3. Use a Magnet Test
Grades 304 and 316 are usually not magnetic or only slightly magnetic. If a magnet strongly sticks to the steel, it might be grade 430 – a cheaper type that rusts easily.
However, this method is not always 100% accurate because some stainless steels are mixed with other materials.
4. Check the Surface and Strength
Good stainless steel has a shiny, smooth surface, no strong metal smell, and does not change color or rust over time.
Fake or low-quality items may look thin, feel light, and start to rust or turn yellow after a short time.
5. Ask for Certificates or Safety Documents
For imported goods or products for children, always ask the seller for safety test results or documents proving the source of the materials.
Look for international safety standards like:
- FDA (U.S. Food and Drug Administration)
- LFGB (German food safety standard)
- JIS (Japanese Industrial Standards)
