Chemical composition analysis of stainless steel flanges

The chemical composition of stainless steel flanges varies depending on the material, standard and application field. The following is the chemical composition analysis of the common materials of stainless steel flanges:

First, 304 stainless steel flange

Chemical composition:

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%

Features:

304 stainless steel flange is one of the most widely used stainless steel materials, with good corrosion resistance and heat resistance.

Its high chromium content can effectively improve the corrosion resistance.

The addition of nickel enhances its oxidation resistance and toughness.

Second, 316 stainless steel flange

Chemical composition:

Carbon (C) : ≤0.08%

Silicon (Si) : ≤1.00%

Manganese (Mn) : ≤2.00%

Phosphorus (P) : ≤0.045%

Sulfur (S) : ≤0.030%

Chromium (Cr) : 16.00~18.00%

Nickel (Ni) : 10.00~14.00%

Molybdenum (Mo) : 2.00~3.00%

Features:

316 stainless steel flange added molybdenum element on the basis of 304, further improve its corrosion resistance, especially in the corrosive media such as chloride ion performance is more excellent.

Suitable for coastal areas, chemical industry and other corrosive environment.

Third, 316L stainless steel flange

Chemical composition:

Carbon (C) : ≤0.030%

Silicon (Si) : ≤1.00%

Manganese (Mn) : ≤2.00%

Phosphorus (P) : ≤0.045%

Sulfur (S) : ≤0.030%

Chromium (Cr) : 16.00~18.00%

Nickel (Ni) : 10.00~14.00%

Molybdenum (Mo) : 2.00~3.00%

Features:

316L stainless steel flange is a low-carbon version of 316 material, with better intergranular corrosion resistance.

Suitable for welding or high temperature applications.

Fourth, 904L stainless steel flange

Chemical composition:

Carbon (C) : ≤0.02%

Silicon (Si) : ≤1.00%

Manganese (Mn) : ≤2.00%

Phosphorus (P) : ≤0.045%

Sulfur (S) : ≤0.030%

Chromium (Cr) : 19.00~23.00%

Nickel (Ni) : 23.00~28.00%

Molybdenum (Mo) : 4.00~5.00%

Copper (Cu) : 1.00~2.00%

Features:

904L stainless steel flange is a super austenitic stainless steel with very high corrosion resistance, especially in strong corrosive media such as sulfuric acid and phosphoric acid.

The low carbon content further enhances its resistance to intergranular corrosion.

Fifth, N08926 French

Chemical composition:

Nickel (Ni) : 24.00~26.00%

Chromium (Cr) : 19.00~21.00%

Molybdenum (Mo) : 6.00~7.00%

Copper (Cu) : 0.50~1.50%

Features:

The N08926 flange is a high-grade super austenitic stainless steel material with excellent corrosion resistance, especially in chlorides and sulfuric acid environments.

Its high strength and wide range of applications make it an indispensable part of industrial equipment.

In summary, the chemical composition of stainless steel flanges varies according to the material, and different chemical compositions give stainless steel flanges different performance characteristics to meet the needs of different fields of use.