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Incoloy 800H/HT

UNS N08810/N08811

Description

Nickel-iron-chromium alloys with the same basic composition as INCOLOY 800 but with much higher creep-rupture strength. The close control of the aluminum, titanium, and carbon contents in conjunction with a high-temperature anneal result in the higher strength. Incoloy 800 H/HT is used in industrial furnaces, chemical and petrochemical processing, power plants for super-heater and re heater tubing, and heat-treating equipment.

Forms in Stock

Specifications

Smls Pipe ½”-8″ 10s, 40s, 80s ASTM/ASME 407

Limiting Chemical Composition, %

800H 800HT
Ni…30.0-35.0 Ni…30.0-35.0
Fe…39.5 min. Fe…39.5 min.
Cr…19.0-23.0 Cr…19.0-23.0
C…..0.05-0.10 C…..0.06-0.10
Al…0.15-0.60 Al…0.25-0.60
Ti…0.15-0.60 Ti…0.25-0.60
Al + Ti…0.30-1.20 Al + Ti…0.85-1.20