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Data Sheet:

Corrosion Resisting Alloy 321

Chemical Composition Limits

Weight % C

Si

Mn P + S max Cr Ni Ti N Fe

AMS 5510

321

0.08

max

0.75 max 2.0 max 0.045 P 0.030 S 17.00 / 19.00 9.00 / 12.0 0.7 max 0.1 max Bal

  

Type 321 is a chromium-nickel stainless steel and with the addition of titanium, type 321 is resistant to intergranular corrosion.  Type 321's general corrosion is less than Type 302.  Type 321 is used where resistance to intergranular corrosion is required and where the parts are subjected to sustained heating or cooling within the range of 800 to 1500ºF. Type 321 is commonly used in applications such as exhaust stacks, manifolds and ring collectors.

  

AVAILABILITY

Type 321 is available in Sheet, Strip, Plate, Bar (Round, Hex, Flat, Square) and Tube. 321 Foil (Shim) is available in various thicknesses.  View stock list for further information.  Foil Stock List, Sheet/Plate Stock List.

  

SPECIFICATIONS 

Type 321 Stainless Steel is covered by the following specifications:

AMS 5557 Seamless and Welded Hydraulic Tubing

AMS 5559 and 5576 Welded Tubing

AMS 5570 Seamless Tubing

ASTM A 240

UNS : S32100

  

Sheet, Strip and Plate Bar, Wire, Forgings

AMS 5510

QQ-S-766

ASTM A 240

ASTM A 167

AMS 5645 

QQ-S-763

ASTM A 193 GRD B8T CL1 (Bar)

ASTM A 276

ASTM A 314

ASTM A 320 GRD B8T (Bar)

ASTM A 479

ASTM A 484

  

 TYPICAL MECHANICAL PROPERTIES (Typical Room Temperature Properties)

Ultimate Tensile Strength

0.2% Offset Yield Strength

Elongation

Hardness

ksi MPa ksi MPa % in 2" (50.8mm) Rockwell
90 621 40 276 45 B80

 

 

Disclaimer

Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

 

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