ASTM B407 ASME SB407 UNS N08810 Alloy 800 Nickel Alloy Seamless Tube Abs Approved

ASTM B407 ASME SB407 UNS N08810 Alloy 800 NICKEL ALLOY SEAMLESS TUBE ABS APPROVED

Incoloy 800H is primarily used in applications where temperatures do not exceed 1100° F, while alloys 800H and 800HT are typically used in temperatures above 1100° F where creep and fracture resistance is required. The chemical balance gives the nickel-steel alloys excellent resistance to carburising, oxidising and nitriding atmospheres, and Incoloy 800HT will not become embrittled even after prolonged use in the 1200-1600°F temperature range, where many stainless steels become brittle. The excellent cold forming properties normally associated with nickel-chromium alloys are also evident in 800HT. During cold forming, grain size produces a distinctly undulating surface known as "orange peel" Incoloy 800HT can be welded by techniques commonly used for stainless steels.

Chemical Composition

Mechanical Properties

The mechanical properties of Incoloy 800/800HT combined with their corrosion resistance at elevated temperatures make Incoloy alloys extremely versatile in a variety of high temperature and long term operations. These alloys are also used in a wide variety of applications in corrosive media.The chemical composition of Incoloy 800H and 800HT is limited to that of INCOLOY Alloy 800. Alloy 800 has high mechanical strength at elevated temperatures. The important difference between the Incoloy alloy families is the difference in mechanical properties. The differences in mechanical properties are due to differences in chemical composition and annealing temperatures. In general, Incoloy 800 alloys have high mechanical properties at room temperature and the lowest mechanical properties at elevated temperatures. On the other hand, Incoloy 800H and 800HT alloys have higher creep and stress fracture strengths at higher temperatures.

Specifications