321 - Stainless Steel Forged Flanges

Raw Material ASTM A182 F321 Ed. 2020
C % 0.080 Max.
Mn % 2.000 Max.
P % 0.045 Max.
S % 0.030 Max.
Si % 1.000 Max.
Cr % 18.00-20.00
Ni % 17.00-19.00
Stainless Steel 321 Forged Flanges Exporters & Suppliers

321 Steel Pipes Manufacturers, Exporters & Suppliers in India


Stainless Steel 321 - Stainless Steel Forged (SSF) Flanges are a popular type of forged flange, available from several manufacturers. They are made from chromium-nickel alloy, stabilized with titanium. It contains 17% chromium and 9% nickel, as well as other elements such as carbon, silicon, manganese, phosphorus, sulfur, nitrogen, and iron.


Stainless 321 has excellent forgeability, which is crucial in some applications. Stainless 321 is resistant to atmospheric corrosion, as well as several organic and inorganic chemicals. It is typically used in high-temperature chemical process equipment. Type 321 stainless steel is available in the welded pipe, seamless pipe, and tube. The flanges are available in a variety of sizes and styles.


Stainless Steel 321 is an austenitic alloy containing 0.08% carbon. It offers excellent welding properties and good intergranular corrosion resistance. It also has a wide range of operating temperatures from 425 to 850 degrees Celsius. Stainless Steel 347 is readily available in industrial fields. Compared to its sister alloys, 321H provides superior strength and good low-temperature toughness.


SS Forged Flanges are the most common type of flanges for Stainless Steel. They can be manufactured to suit a range of applications, from flanges for marine applications to piping systems in oil and gas pipelines. Stainless Steel 321 Forged Flanges are available in a wide variety of sizes, including ASTM A182 SS F321 Slip-On-Raised-Face (SORF) and Blind Flanges.


Type 321 - Stainless Steel Forged flanges contain high levels of titanium and austenitic structure. This makes them suitable for use in high-temperature environments. However, oxyacetylene welding is not recommended because it causes carbide precipitation which reduces corrosion resistance. Alternatively, Type 347 contains Niobium, which performs the same function as Titanium but is compatible with high-temperature arcs.