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The Difference Between Industrial And Food Grade 304 Steel Mesh

September 05, 2022

cIndustrial grade 304 stainless steel mesh is made of 304, while food grade stainless steel mesh is made of 304 or 309 and other raw materials. The following is a small introduction to the differences between them.


What are the types of food-grade stainless steel?

What are the types of food-grade stainless steel? The main types of food-grade stainless steel are 430 stainless steel, 304 stainless steel and 316 stainless steel.


430 stainless steel can generally prevent oxidation under natural conditions. If not used regularly, it can still be oxidized due to unnatural factors.


304 stainless steel can resist oxidation by chemicals. The standard material for stainless steel pressure cookers is 304 or more, and the minimum standard for food-related stainless steel products is 304 stainless steel.

 Pizza Mesh Screen

  Pizza Mesh Screen


316 stainless steel is better, more durable, and more resistant to corrosion. It is called 18-10 stainless steel, which is also known as medical stainless steel. There is no metal ion precipitation, very safe.


In the production process of stainless steel tableware, in order to make the product has some special properties, after forming the finishing process attached to the machine oil and other substances will produce "odor". If you use 304, 316 food-grade stainless steel tableware, after cleaning, there is still an obvious "odor", indicating that the quality of stainless steel is not up to standard.


The surface becomes black, safe to use?

The general black material is polishing wax. Under normal circumstances, the polishing wax of stainless steel products should be cleaned before leaving the factory. If there is polishing wax products into the hands of consumers, regardless of whether the stainless steel itself to food grade, at least that the manufacturer's quality control problems. It is recommended not to use such products in contact with food, or just throw away.


The difference between industrial and food grade 304 steel mesh

1. Different corrosion resistance

Ordinary industrial 304 stainless steel in acid, alkali environment will occur in the pitting and rusting phenomenon, so its service life than food-grade short; and food-grade 304 stainless steel in the above environment will not occur in the raw crystal reaction, and will not produce hydrogen embrittlement phenomenon.


Coffee Filter Disc

Coffee Filter Disc

2. Different mechanical strength

The tensile strength of food grade is lower than that of industrial grade; while the pressure resistance of industrial grade is higher than that of edible grade.


3. Surface treatment is different

Industrial ones are generally polished, while edible ones are plated to increase their surface beauty and smoothness (of course, the price is also higher accordingly).


4. The difference in appearance quality

Due to the different uses, 316, 310s and other alloy steel is widely used in the manufacture of tableware, kitchenware and other products, these products are characterized by high hardness, not easy to deform and durable characteristics.


317, 420, 430 and other low-alloy high-strength structural steels are mostly used in the construction industry, such as elevator cars and bridge supports and other components used in the above.


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