SS 321 Flanges Supplier

Stainless steel flanges are designed for use in a variety of industrial applications. These flanges are a common choice because they have superior corrosion resistance and strength compared to other metal types. Of all the types of stainless steel flanges, stainless steel 321 flanges provide the highest resistance to corrosion and oxidation. That makes them ideal for use in environments that require high levels of heat or pressure, such as nuclear power plants and chemical processing plants.

SANSI B16.5 Stainless Steel 321 Flanges, Stainless Steel 321 Flanges, Stainless Steel 1.4541 Flanges, Stainless Steel 321H Flanges, SS S32100 Flanges Stockist, Stainless Steel 321 Flanges, UNS S32100 Flanges, SS S32109 Flanges, Alloy 321 Flanges, A182 F321 Stainless Steel Flange, F321h Forge Flanges, ASTM A182 321 Stainless Steel Flanges Supplier in Mumbai, India.

Stainless Steel 321 Flanges are essential in various industries, including petrochemical, chemical, and water treatment. These flanges are made from stainless steel containing titanium, enabling them to withstand high temperatures and provide excellent corrosion resistance. That makes them ideal for use in environments with extreme heat and corrosion. Stainless steel 321 flanges come in various shapes and sizes, including weld neck, slip-on, threaded, and blind flanges, providing flexibility and versatility in their applications. At Metcore Steel, we pride ourselves on providing excellent customer service and offering a wide range of products, including Stainless Steel 321 Flanges and Duplex Steel S31803 Flanges.

SUS 321H Loose Flanges, Stainless Steel 1.4878 Threaded Flanges, 321 Stainless Steel Weld Neck Flanges, Stainless Steel 1.4878 Socket Weld Flange, ASME SA 182 Stainless Steel 321 Ring Type Joint Flange, AISI 321H Stainless Steel Blind Flanges, 321 SS Industrial Flanges, 1.4541 Stainless Steel Forged Flanges Exporter, 321H Stainless Steel Slip-On Flanges, A182 F321 Flanges, Stainless Steel 321 Flanges Stockists, Stainless Steel 321 Flanges Dealers, 321 SS Reducing Flanges Manufacturer in India.

Stainless steel 321H is an alloy that is composed mainly of iron with additions of chromium (Cr), nickel (Ni), manganese (Mn), and silicon (Si). This high heat-resistant material is used primarily in extreme temperature applications like aerospace engines and exhaust systems, as well as nuclear reactors and chemical processing plants where it is constantly exposed to extreme temperatures. It also has excellent forming capabilities to be easily machined into complex shapes for custom uses like medical equipment or food service parts. In addition to our range of Stainless Steel 321 Flanges and Monel 400 Flanges.

The main benefit of using Stainless Steel 321H Flanges over other grades is its exceptional resistance to corrosion from acids and alkalis. That makes it perfect for applications where these chemicals must be contained or processed safely without contaminating rusting or corroding components. Additionally, this alloy has excellent flexibility, so it can be formed into a wide range of shapes without cracking or splitting under stress from heat or cold temperatures. That means it can be used in many industries, such as automotive manufacturing, where precise parts must conform precisely with each other without fail every time they are produced.

Stainless Steel 321H provides an ideal combination of strength, formability, and corrosion resistance, making it an excellent choice for many industrial applications, including aerospace engineering, chemical processing plants, and automotive manufacturing, to name a few. Its superior resistance to oxidation makes it particularly useful in extreme temperature environments where other materials may not stand up against the heat or cold exposure levels required by specific processes.


321 stainless steel flanges are commonly used in high-temperature applications such as aerospace, chemical processing, and thermal oxidizers. They offer excellent resistance to oxidation & are often used in environments where exposure to high temperatures can cause material degradation.
The main difference between 304 and SS 321 flanges is the composition of the stainless steel. 321 stainless steel contains titanium, which makes it more resistant to high temperatures & better suited for high-temperature applications than 304 stainless steel.
321 SS flanges typically comprise around 17-19% chromium, 9-12% nickel, and 0.5-1.0% titanium. This composition provides excellent resistance to high temperatures, oxidation & corrosion.

SS 321H Flanges Specification

Specifications :

Dimensions :

Standard :

Size :

Class/Pressure :

Flange Face Type :

ASTM A182, ASTM A182

ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.

ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.

1/2" (15 NB) to 48" (1200NB)

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

SS 321 Flanges Equivalent Grades

STANDARD WERKSTOFF NR. UNS JIS EN
SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9

SS 321H Flanges Chemical Composition

Grade C Mn Si P S Cr N Ni Ti
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 0.10 max 9.00 - 12.00 5(C+N) – 0.70 max
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 0.10 max 9.00 – 12.00 4(C+N) – 0.70 max

SS 321 Flanges Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1457 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %


SS 321H Flanges Available Types

Stainless Steel 321 / 321H Slip On Flanges
  • Stainless Steel 321H Slip On Flanges
  • Stainless Steel 321 Slip On Flanges
  • Stainless Steel 321H Slip On Flanges
  • SS S32100, S32109 Slip On Flanges
  • 1.4541, 1.4878 Slip On Flanges
  • ASTM A182 SS 321H Slip On Flanges (SORF)
  • ASME SA 182 Stainless Steel 321 Slip On Flanges
Stainless Steel 321 / 321H Weld Neck Flanges
  • Stainless Steel 321H Weld Neck Flanges
  • Stainless Steel 321 Weld Neck Flanges
  • Stainless Steel 321H Weld Neck Flanges
  • SS S32100, S32109 Weld Neck Flanges
  • 1.4541, 1.4878 Weld Neck Flanges
  • ASTM A182 SS 321 Weld Neck Flanges (WNRF)
  • ASME SA 182 Stainless Steel 321 Weld Neck Flanges
Stainless Steel 321 / 321H Socket Weld Flanges
  • Stainless Steel 321H Socket Weld Flanges
  • Stainless Steel 321 Socket Weld Flanges
  • Stainless Steel 321H Socket Weld Flanges
  • SS S32100, S32103 Socket Weld Flanges
  • 1.4541, 1.4878 Socket Weld Flanges
  • ASTM A182 SS 321 Socket Weld Flanges (SWRF)
  • ASME SA 182 Stainless Steel 321 Socket Weld Flanges
Stainless Steel 321 / 321H Blind Flanges
  • Stainless Steel 321H Blind Flanges
  • Stainless Steel 321 Blind Flanges
  • Stainless Steel 321H Blind Flanges
  • SS S32100, S32109 Blind Flanges
  • 1.4541, 1.4878 Blind Flanges
  • ASTM A182 SS 321 Blind Flanges (BLRF)
  • ASME SA 182 Stainless Steel 321 Blind Flanges
Stainless Steel 321 / 321H Ring Type Joint Flanges
  • Stainless Steel 321H Ring Type Joint Flanges
  • Stainless Steel 321 Ring Type Joint Flanges
  • Stainless Steel 321H Ring Type Joint Flanges
  • SS S32100, S32109 Ring Type Joint Flanges
  • 1.4541, 1.4878 Ring Type Joint Flanges
  • ASTM A182 SS 321 Ring Type Joint Flanges (RTJ)
  • ASME SA 182 Stainless Steel 321 Ring Type Joint Flanges
Stainless Steel 321 / 321H Long Weld Neck Flanges
  • Stainless Steel 321H Long Weld Neck Flanges
  • Stainless Steel 321 Long Weld Neck Flanges
  • Stainless Steel 321H Long Weld Neck Flanges
  • SS S32100, S32109 Long Weld Neck Flanges
  • 1.4541, 1.4878 Long Weld Neck Flanges
  • ASTM A182 SS 321 Long Weld Neck Flanges
  • ASME SA 182 Stainless Steel 321 Long Weld Neck Flanges

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