Stainless Steel Grade 304 - Food Grade & Corrosion Resistant

 

Chemical Composition

Element	304 SS	316 SS
Chromium (Cr)	17.5–20.0 %	16.0–18.5 %
Nickel (Ni)	8.0–11.0 %	10.0–14.0 %
Molybdenum (Mo)	0 %	2.0–3.0 %

Corrosion Resistance

Stainless Steel 304

Grade 304 is a widely used, cost-effective choice for general food and beverage applications. It offers good resistance to most oxidizing acids and does not corrode easily in standard processing environments.

However, it is susceptible to pitting corrosion in chloride-rich conditions, making it less suitable for applications involving salty or briny water.³

Stainless Steel 316

The addition of molybdenum gives 316 stainless steel enhanced resistance to pitting and crevice corrosion, particularly in chloride-exposed, acidic, or high-temperature environments. It works well in seafood processing, acidic food products like citrus or tomatoes, and in facilities that use aggressive cleaning-in-place (CIP) systems.

In these situations, 316 lasts longer and performs more reliably than 304.^3,4

Durability and Strength

Stainless Steel 304

304 stainless steel is known for being tough and reliable. It withstands frequent cleaning, physical wear, and everyday mechanical stress in food industry settings.⁵

Stainless Steel 316

316 is even more durable, especially in harsh conditions or when equipment is exposed to strong chemicals or constant use. It's a better choice when components face ongoing stress, aggressive cleaners, or rough handling. While both grades are strong, 316 is more resilient in demanding environments.^{3, 5}