Sandvik Sanicro 31HT
Seamless tube and pipe

Thanks to its high nickel content, Sandvik Sanicro 31HT shows very little tendency to precipitate embrittling phases.

Within the 600-700°C (1110-1290°F) temperature range, an intermetallic phase, gamma prime, Ni3 (Al, Ti), is precipitated, which reduces the ductility of the alloy. To avoid this precipitation some specifications prescribe maximization of the (Ti + Al) content.

Sandvik supplies a modified version of Sandvik Sanicro 31HT in which chemical composition and heat treatment have been adapted to meet this requirement and give the highest possible creep ductility.


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A document from the Sandvik Materials Technology web-site.