Stainless Steel 321 Flanges

Stainless Steel 321 Flanges

Stainless Steel 321 and 321H Flanges are integral components in various industrial applications, thanks to their exceptional resistance to corrosion and high-temperature performance. These flanges, which are derived from the austenitic family of stainless steels, exhibit remarkable mechanical and thermal properties, making them the preferred choice for critical applications.

Chemical Composition: Stainless Steel 321 is a titanium-stabilized variant of 304 stainless steel, while 321H is the high-carbon version. The primary difference between the two lies in their carbon content. The addition of titanium provides enhanced resistance to intergranular corrosion, making these flanges suitable for applications where exposure to high temperatures and corrosive environments is common.

Corrosion Resistance: Both 321 and 321H flanges offer excellent resistance to a wide range of corrosive substances, including organic acids, inorganic chemicals, and oxidizing agents. This corrosion resistance is vital in industries like chemical processing, pharmaceuticals, and petrochemicals, where exposure to aggressive chemicals is frequent.

321 Stainless Steel Flanges

High-Temperature Performance: One of the standout features of these flanges is their ability to withstand high temperatures. Stainless Steel 321 and 321H flanges can endure temperatures up to 900°C (1652°F), making them ideal for applications in furnaces, exhaust systems, and other high-temperature environments. Their high-temperature strength and creep resistance ensure long-lasting performance under extreme conditions.

Weldability: Stainless Steel 321 and 321H flanges are readily weldable using common welding methods such as TIG, MIG, and shielded metal arc welding. This ease of weldability simplifies installation and maintenance, reducing downtime and costs.

Manufacturing Process Of Stainless Steel 321 Flanges

Specification Of SS 321H Flanges

Standard ASTM A182 / ASME SA182
Dimension ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Flanges Size 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Pressure Class PN 2.5 TO PN 400
Pressure Rating ANSI Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Pressure Calculation in DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
Table D, E, F, H
Types Forged / Threaded / Screwed / Plate
Form Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange, Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange.
Flanges Marking All Flanges are marked as follows: Grade, Standard, Thickness, Heat No. (Or according to the customer’s request.)

Stainless Steel 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

Chemical Composition of SS 321H Flanges

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

Mechanical Properties of SS 321 Flanges

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 %

Types Of Stainless Steel 321H Flanges

321 Stainless Steel Slip-On Flanges

321 Stainless Steel Slip-On Flanges

321H SS Weld Neck Flanges

321H SS Weld Neck Flanges

321 Stainless Steel Blind Flanges

321 SS Blind Flange

321H Stainless Steel Socket Weld Flange

321H Stainless Steel Socket Weld Flange

321 Stainless Steel Ring Type Joint Flange

321 Stainless Steel Ring Type Joint Flange

321 Stainless Steel Threaded Flanges

321 Stainless Steel Threaded Flanges

321 Stainless Steel Forged Flange

321 Stainless Steel Forged Flange

321H Stainless Steel Lap Joint Flange

321H Stainless Steel Lap Joint Flange

Stainless Steel 321 Spectacle Blind Flange

SS 321 Spectacle Blind Flange

Stainless Steel 321 Reducing Flanges

Stainless Steel 321 Reducing Flanges

Stainless Steel 321H Square Flanges

Stainless Steel 321H Square Flanges

Stainless Steel 321 Flat Flange

SS 321 Flat Face Flange

Other Types Of Stainless Steel 321 Flanges

  • SS 321 Slip On Flanges
  • SS 321 Lap Joint Flanges
  • SS 321H Plate Flanges
  • Stainless Steel 321H Socket Weld Flanges
  • Stainless Steel 321H Long Weld Neck Flanges
  • 1.4541 Reducing Flanges
  • Stainless Steel 321 Tongue & Groove Flanges
  • SS 321 Blind Flanges
  • 321 Stainless Steel Loose Flanges
  • SS 321 Pipe Flanges
  • UNS S32100 Threaded Flanges
  • 321 Stainless Steel Spectacle Blind Flanges
  • 321H Stainless Steel Weld Neck Flanges
  • ASTM A182 321H Stainless Steel Ring Type Joint Flanges
  • Stainless Steel 321H Forged Flanges
  • 321H Stainless Steel SORF Flanges
  • Stainless Steel 321 Spectacle Blind Flanges
  • Stainless Steel 321 Ring Type Joint Flanges
  • 321H Stainless Steel Slip on Flanges
  • Stainless Steel 1.4435 PN 10 Flange
  • 321H Stainless Steel Socket weld Flanges
  • 321 Stainless Steel Male & Female Flanges
  • 1.4878 Blind Flange
  • SS 321 SWRF Flange
  • ASTM A182 321H Flat Face Flanges
  • Stainless Steel 321H Welding Neck Flange
  • UNS S32109 Screwed Flanges
  • Stainless Steel 321 RTJ Flanges
  • ASME SA182 321 Stainless Steel Nipoflange
  • ASME B16.5 Stainless Steel 321H BLRF Flanges

Ask Free Sample of SS 321 Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) Flanges Please Call On   +91 9594327775 Or Mail Us On subhash@sheetalindustries.com

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UNS S32100 Flanges Price, Dimension, Weight

SS 321 Flanges Industrial Application

Oil & Gas Industry

Oil & Gas Industry

Chemical Industry

Chemical Industry

Power Generation Industry

Power Generation Industry

Construction Industry

Construction Industry

Shipbuilding Industry

Shipbuilding Industry

Automotive Industry

Automotive Industry

Food Industry

Food Industry

Textile Industry

Textile Industry

Export & Supply Destination of SS 321 Flanges

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