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Data Sheet:

  Alloy 309 

Chemical Composition Limits

Weight % C P Si Ni Mn S Cr Fe

309

0.20 max 0.045 max 1 max 12-15 2 max 0.030 max 22-24 Bal

  

Alloy 309 is an austenitic chromium-nickel stainless steel which has excellent heat-resisting properties.  Alloy 309 has improved corrosion resistance and better creep strength than alloy 304.  Alloy 309 is used in furnace parts, fire box sheets, high temperature containers and weld wire.

   

Availability

Alloy 309 is available in Bar (Round), Wire, Rod, Billet, Sheet, Strip, Plate. View Stock Lists for further information, Plate Stock List or contact Sales.

   

Specifications

UNS S30900 (309)

UNS S 30908 (309S)

AMS 5650 Bar, Wire, Forgings, Tubing and Rings

AMS 5523 Sheet, Strip and Plate

AMS 5574 Seamless Tubing

AMS QQ S 793

ASTM A 276

ASTM A 479 (309S only)

ASTM A 484

ASME SA479

ASTM A314

ASTM A580

  

Typical Mechanical Properties (Room Temperature)

Alloy 309 (1" round bar annealed 1950ºF, water quench)

Condition  UltimateTensile Strength (MPa) Yield Strength 0.2% (MPa) Elongation 2" (%) Reduction of Area (%) Rockwell B Hardness
309 Ann 620 276 50 77 83

  

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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