The composition and differences between 301 stainless steel and 304 stainless steel:

301 stainless steel and 304 stainless steel are both austenitic stainless steels widely used in multiple fields, but they have some differences in chemical composition, mechanical properties, corrosion resistance, and application areas. Here are their main differences:

301 stainless steel

Carbon (C): ≤ 0.15%

Silicon (Si): ≤ 1.00%

Manganese (Mn): ≤ 2.00%

Phosphorus (P): ≤ 0.045%

Sulfur (S): ≤ 0.030%

Chromium (Cr): 16.00% -18.00%

Nickel (Ni): 6.00% -8.00%

304 stainless steel

Carbon (C): ≤ 0.08%

Silicon (Si): ≤ 1.00%

Manganese (Mn): ≤ 2.00%

Phosphorus (P): ≤ 0.045%

Sulfur (S): ≤ 0.030%

Chromium (Cr): 18.00% -20.00%

Nickel (Ni): 8.00% -10.50%

Chemical composition comparison

Carbon content: The carbon content of 301 stainless steel is higher than that of 304 stainless steel, which allows 301 stainless steel to maintain a high hardness after cold working.

Chromium content: The chromium content of 304 stainless steel is higher than that of 301 stainless steel, which helps to improve its corrosion resistance.

Nickel content: The nickel content of 304 stainless steel is higher than that of 301 stainless steel, which helps maintain its good plasticity and toughness.

Overall, 301 stainless steel and 304 stainless steel each have their unique advantages and applicable scenarios. When choosing which type of stainless steel to use, it is necessary to fully consider factors such as its working environment, usage requirements, and cost.