All about the Food Grade 304, 18/8

XIMO USA brewing systems are made from the highest food grade virgin stainless steel, we use 304 18/8,  what does it mean? 18/8: This is one of the most common grades of stainless steel used for food preparation and dining, also known as Type 304 (304 Grade) and are part of the 300 series. The first number, 18, refers to the amount of chromium in and the second represents the amount of nickel.  For example, 18/8 stainless steel is comprised of 18% chromium and 8% nickel.

304 grade stainless steel is also comprised of 0.8% carbon and at least 50% iron. The chromium binds oxygen to the surface of the product to protect the iron from oxidation (rust). Nickel also enhances the corrosion resistance of stainless steel.  Therefore, the higher the nickel content, the more resistant the stainless steel is to corrosion. The stainless alloy resists most oxidizing acids and can withstand all ordinary rusting. HOWEVER, IT WILL TARNISH. It is immune to foods, sterilizing solutions, most of the organic chemicals and dyes, and a wide variety of inorganic chemicals. Type 304, or one of its modifications, is the material specified more than 50% of the time whenever a stainless steel is used.
Because of its ability to withstand the corrosive action of various acids found in fruits, meats, milk, and vegetables, Type 304 is used in all kind of applications. It is also used in numerous other utensils such as cooking appliances, pots, pans, and flatware.

Type Analysis of Stainless Type 304

Carbon 0.08% max. Silicon 1.00% max.
Manganese 2.00% max. Chromium 18.00-20.00%
Phosphorus 0.045% max. Nickel 8.00-10.50%
Sulfur 0.030% max.

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