In response to the need for a material for superheater and reheater tubing in power plant boilers, for high-temperature recuperators, and for coal gasification and liquefaction technologies, Special Metals Corporation has reintroduced INCOCLAD® 671/800HT® co-extruded, duplex tubing. The new product is an improvement over the earlier material, in that the original alloy 800H substrate has been upgraded to alloy 800HT, with higher allowable design stresses.

The product combines the high-temperature strength and corrosion resistance of seamless INCOLOY® alloy 800HT tubing with the corrosion resistance of cladding in INCONEL® alloy 671, a nominal 50/50 Ni/Cr composition specially developed to resist metal wastage corrosion, with excellent resistance to oxidation and carburization, and particular resistance to fuel-ash corrosion in atmospheres containing sulfur and/or vanadium.

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W.Nr.: n/a

Technical Bulletin (PDF, 112KB)

Available Product Forms: Tubing

Technical Papers
Alloy Solutions to Metal Dusting Problems in the Petrochemical Industry (PDF, 1.6MB)

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