321/321H Stainless Steel

UNS S32100

Grade 321/321H, is primarily comprised of 17% to 19% chromium, 12% nickel, .25% to 1% silicon, 2% maximum manganese, traces of phosphorus and sulfur, 5 x (c + n) .70% titanium, with the balance being iron. With regards to corrosion resistance, 321 is equivalent to Grade 304 in the annealed condition and superior if the application involves service in the 797° to 1652° F range. Grade 321 combines high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.

Available from Inventory

  • Pipe : Seamless and Welded
  • ½” Through 48”
  • Schedules: 10s, 40s, 80s, 160, XXH
  • Fittings: Butt Weld, Socket Weld
  • Pressure Fittings: Threaded
  • ¼” Through 6”
  • 150#, 300#, 3000#, 6000#
  • Flanges: Raised Face, Flat Face, Weld Neck, Slip On, Threaded & Blind
  • Tubing : Seamless and Welded
  • Bar : Round, Square, Flat and Hex
  • Sheet and Plate

Chemical Composition %

C Cr Mn Ni P S Si Ti
MaxMaxMaxMaxMax
0.0817.0-20.02.09.0-13.00.040.300.75Trace

The information above is not warranted, guaranteed, or for design purposes.