Birçok yabancı alıcı, gıda sınıfı paslanmaz çelik materials or products (such as kitchenware, tableware, and food processing equipment) from China often assume that 304 or 316 stainless steel is automatically food-grade. They believe that as long as the product is labeled "304 stainless steel," "316 stainless steel," or "food-grade," it's safe. But being food-grade is actually two separate claims, and conflating them is where most procurement risk comes from: first, whether the alloy itself is capable of meeting food-contact performance requirements — and second, whether the specific batch in front of you can prove it. This article walks through both, so you can tell qualified material from a label that's just saying the right words.

No regulator certifies stainless steel by grade name. Under frameworks like the US FDA's 21 CFR 117.40 (food-contact surface requirements) and China's GB 4806.9-2023, a food-contact material has to deliver on three performance requirements: korozyon direnci, chemical stability (low reactivity — it doesn't leach metals or affect taste), and ease of cleaning (a smooth, non-porous surface that resists bacterial harborage).

Food-grade stainless steel is formulated with a minimum chromium and nickel content — generally 16%+ chromium for the 300 series, plus 8–10%+ nickel — that gives it these properties. Regular-grade steels (including 200-series and other lower-nickel alloys) can carry an identical surface finish and look indistinguishable, but they lack the alloy composition that keeps heavy metals from migrating into food under acidic or high-temperature conditions. The difference isn't visible — it's in the mill certificate.

304, 316, Ve 430 stainless steel are considered food-grade because their composition, in practice, delivers on the three requirements above — not because any regulator issued them a name-brand certificate. That's an important distinction, because it means "food-grade" is a performance claim about the alloy, not a label anyone can self-declare.

So the reasoning above also answers a question that trips up a lot of buyers: is all stainless steel food-safe? The answer is clearly no. Only specific grades — 304, 316, and 430 among them — carry the chromium and nickel levels capable of meeting food-contact standards in the first place; most of the wider stainless steel family isn't formulated to. But even for those grades, being capable isn't the same as being confirmed: the grade only qualifies a piece to be tested against a standard like GB 4806.9-2023, FDA, or EU equivalents. It's the actual test result — not the grade name — that determines whether a specific batch is genuinely food-safe.

So when you're wondering whether your 304（18/8）, 316, or 430 is actually safe: the grade name tells you it's eligible, not that it's confirmed. Genuinely food-safe material is verified through migration testing against GB 4806.9-2023, FDA, or EU standards — checked, not assumed, to be free of harmful levels of lead, nickel, or other heavy metals leaching into food under real contact conditions. That verification, not the grade stamped on the coil, is what actually decides whether a given batch is safe.

Here's how the three grades actually compare across the requirements that matter for food contact:

You'll find both answers online — some sources call 316 the gold standard, others say 304 is perfectly adequate. Both are actually making the same underlying point from different angles: there's no single "best" grade, only a best grade for a given operating condition. Comparing 304 and 316 only makes sense when the environment is held constant — same chloride exposure, same cleaning chemicals, same temperature. Under identical conditions, 316 will outperform 304 on corrosion resistance every time, because of its molybdenum content. But "outperforms" isn't the same as "necessary" — in a dry, low-chloride environment, 304 meets the same performance bar 316 does, at a lower cost. The debate isn't really about which grade is better; it's about which conditions the comparison is run under — and most of the disagreement disappears once that's made explicit.

The logic here isn't different from the US or EU — it's the same principle applied through a different regulation. Being food-grade was never about the grade name; it's about whether the material actually passed the applicable test. China's version of that test is GB 4806.9-2023, the national food safety standard governing metal materials and products used in food processing, storage, and preparation. Rather than certifying specific alloy names, it sets hard limits on how much lead, arsenic, chromium, and other heavy metals are allowed to migrate from the steel into food — verified through migration testing (commonly using a 4% acetic acid solution to simulate acidic food contact).

Internationally, food-grade stainless steel generally needs to meet one of the following standards:

GB 4806.9-2023, the FDA framework, and EU standards set different specific thresholds for the same underlying risk — heavy metal migration into food — but that doesn't make one "real" food-grade and the others a lesser version. Each is the legitimate compliance bar within its own jurisdiction. For example:

• Nikel Sızdırma: FDA limits nickel leaching from 304 stainless steel to ≤0.1mg/kg; China's GB 4806.9-2023 allows up to ≤0.4mg/kg. Both are valid regulatory thresholds — they're simply not the same threshold, because they're not the same standard.
  
  
• Asidik Test: The EU requires 24-hour pH 5 testing; China requires a 2-hour pH 4 test. That's a different test protocol, not a different definition of "safe."

Tanınmış olanlar da dahil olmak üzere Çinli yerel çelik fabrikaları, tüketici sağlığını koruyan paslanmaz çelik ürünleri üretmek için GB 4806.9-2023 standardına sıkı sıkıya uymaktadır. Uluslararası alanda büyümek için, önde gelen çelik fabrikaları: BAOWU Ayrıca bazı ürünleri için FDA sertifikası alarak ABD pazarına girmek için sağlam bir temel oluşturmuşlardır. Bu nedenle, tedarikçi seçerken, ürünlerin gıda güvenliği standartlarını karşıladığından emin olmak için tedarikçinin ve destekledikleri çelik fabrikalarının gücünü değerlendirmek çok önemlidir.

The mill test report (MTR) that should come with every shipment confirms the material's actual grade — that it's really 304 or 316, not 201 wearing a food-grade label — via its chemical composition table. It does not, by itself, confirm migration compliance under GB 4806.9-2023 or FDA/EU standards, which measures how much lead, arsenic, or chromium leaches into food under acidic simulation — a separate test from the mill's standard composition check. Ask for both, and specify which standard you need at order time.

• Nikel İçeriği Testi: 304 paslanmaz çelik en az 8% nikel içermelidir, 201 paslanmaz çelik ise genellikle 5%'den daha azdır.
  
  
• Ağır Metal Sızıntı Testleri: GB 4806.9-2023 veya FDA 21 CFR 175.300'ü geçmesi gerekir.
  
  
• Güvenilir Ajanslar: SGS (resmi web sitesi), TÜV Rheinland (resmi web sitesi).

The indicators above usually mean sending a sample to a lab or an agency. If you just want a quick read before it gets that far, these are checks you can run yourself, on-site, with no outside testing required:

1. Manyetik Test — genuine 304/316 typically test non-magnetic, while 201 usually shows clear magnetism due to its unstable, lower-nickel structure. Two things complicate a simple magnet check: cold working (bending, stamping, welding) can leave even genuine 304/316 slightly magnetic, so a weak pull alone isn't proof of fake material — and 430, a separate but legitimate food-safe grade, is magnetic by nature and shouldn't be mistaken for a 201 substitution. A strongly magnetic piece sold as "304," however, remains a reliable red flag.
   
   
2. Limon Asidi Testi — drop lemon juice on the surface and leave it for 24 hours. Inferior or mislabeled steel will show rust or discoloration where genuine 304/316 won't.
   
   
3. XRF Spektrometresi — the one step here that isn't fully DIY, but it's fast and low-cost: used to measure nickel content on-site, typically around ¥50 (RMB) per point.

We've covered a lot of ground, so let's close the loop on the question this whole article has really been circling: is stainless steel made in China actually safe — and is it food-safe? Yes, when it's genuinely tested and verified. Stainless steel made in China, including 304, 316, and 430, can be just as food-safe as material sourced anywhere else — but "made in China" and "food-grade" printed on a tag are not, by themselves, a safety guarantee. Safety comes from a specific batch actually passing a recognized standard (GB 4806.9-2023, FDA, or EU equivalents), confirmed with real documentation — not from the country of origin or the grade name alone.

In practice, that means:

1. 1. Ulusal Standart GB 4806.9-2023'e sadık kalın: While China's food-grade standards differ from international ones, certification under this standard is an effective way to screen products. When purchasing 304/316 stainless steel, always ask the seller for a complete testing report. (Additional certifications like FDA or NSF are a bonus.)
      
      
   2. Üçüncü Taraf Yeniden Test Etme: Malzeme bileşimini SGS veya TÜV gibi kuruluşlar aracılığıyla doğrulayın.
      
      
   3. Düşük Fiyat Tuzaklarına Dikkat EdinFiyat savaşları yaygındır, ancak aynı zamanda standart altı ürünlere de yol açarlar. Piyasa değerinin altında fiyatlandırılmış bir ürün görürseniz dikkatli olun ve eski bir sözü hatırlayın: "Ne kadar para verirseniz o kadarını alırsınız."

We've fielded enough messages from buyers who got 201 shipped against a "304" order to know exactly where this goes wrong — and it's almost always a documentation gap, not a chemistry mystery.

Sanmei Metal supplies stainless steel with full traceability back to source: our suppliers include ünlü çelik fabrikaları in China with established certifications, including Baosteel, Taiyuan Steel, and Tsingshan. Every shipment ships with inspection reports (MTR/SGS), so you're purchasing hakiki gıda sınıfı paslanmaz çelik with documentation to back it up, not just a label. If you have procurement needs, feel free to bize Ulaşın.