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Material Data Sheet

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NF709

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Main Features
  • Highest creep rupture strength among austenitic stainless steel
  • Good steam oxidation resistance due to higher Cr, Ni content
  • Better hot corrosion resistance for chloride alkakine than TP310.
  • Matching welding consumable whichi contribute equivalent strength and corrosion resistance to base metal is applicable.
  • Applicable as superheater and reheater for coal fired boiler and waste to energy boiler.

Standard
  • Vd TÜV Material data sheet 563/2 Supplement 09.2009
  • UNS No. S31025
  • ASTM A213 TP310MoCbN
  • ASME SA-213 Code Case 2581

Chemical Composition


Properties

Mechanical properties

Tensile property requirement at room temperature

 

Physical properties

Coefficient of linear thermal expansion  [x10-6/deg.C]

Modules of elasticity  [GPa]

 

Creep rupture properties

Fig.  Creep rupture test results of base metal.

 

Corrosion resistance

Fig.  Corrosion test results.

Fig.  Steam oxidation test results.

 

Weldability

Fig.  Creep rupture test results of welded joint.