Sanicro® 31HT

Tube and pipe, seamless Datasheet

Datasheet updated 2019-10-03 13:31 (supersedes all previous editions)

Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Sandvik materials.

Sanicro® 31HT is an austenitic nickel-iron-chromium alloy characterized by:

  • High creep strength
  • Very good resistance to oxidation
  • Good resistance to combustion gases
  • Very good resistance to carburization
  • Good resistance to nitrogen absorption
  • Good structural stability at high temperatures
  • Good weldability

Sanicro® 31HT can be used at temperatures up to about 1100°C (2010°F). In order to have the best ductility, it should be used above 700°C (1290°F).

This material can also be supplied in a modified version with the chemical composition and heat treatment adapted for the highest possible creep ductility.
This version is required according to VdTÜV 434 for use in the temperature range between about 550 and 700°C (1020-1290°F).
Contact us for further information.

Sanicro® 31HT is not generally used under wet corrosive conditions. For this type of environment, we recommend Sanicro® 30, which is specially adapted for wet corrosive conditions up to about 550°C (1020°F).

Standards

  • UNS: N08810/N08811
  • EN Number: 1.4959/1.4876
  • EN Name: X8NiCrAlTi32-21
  • W.Nr.: 1.4959*/1.4876**
  • DIN: X 10 NiCrAlTi 32 20*/X 5 NiCrAlTi 31 20**/X 10 NiCrAlTi 32 20 H***

Product standards
Seamless tube and pipe

  • ASTM A213, A312, B163, B407
  • EN 10216-5, 10297-2
  • *) DIN 17459
  • **) SEW 470

Approvals
Approved for use in ASME Boiler and Pressure Vessel Code, Section I and VIII, Division 1, Case 1987-2 and Section I, case 1325-16.
***) VdTÜV-Werkstoffblatt 434 (Temp. >700°C)

Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Sandvik materials.