Alloy 800H / 800HT REFRACTORY ANCHOR

Incoloy 800H and 800HT are a nickel-iron-chromium alloy with very good strength and excellent resistance to oxidation and carburization in high-temperature environments. These nickel steel alloys are indistinguishable aside from the large amount of carbon in alloy 800H and the expansion of up to 1.20 percent aluminium and titanium in alloy 800HT. Incoloy 800 was the first of these alloys and it was altered into Incoloy 800H. This change was to control carbon (.05-.10%) and grain size to improve stress rupture properties. Incoloy 800HT has further adjustments to the consolidated titanium and aluminum levels (.85-1.20%) to guarantee ideal high temperature properties. The nickel alloy is double certified (800H/HT) and joins the properties of both structures. Incoloy 800H/HT alloy was proposed for high temperature structural applications. The nickel content makes the alloy exceptionally resistant to both chloride stress-corrosion cracking and to embrittlement from precipitation of sigma stage. The general corrosion resistance is brilliant. In the solution annealed condition, alloy 800H and 800HT have prevalent creep and stress rupture properties.

Incoloy 800H and 800HT are ordinarily utilized as a part of temperatures above 1100° F where resistance to creep and rupture is required. The chemical balance permits the nickel steel alloy to display magnificent resistance to carburization, oxidation and nitriding atmospheres. Incoloy 800HT won't get to be embrittled even after long stretches of use in the 1200-1600° F range where numerous stainless steels get to be brittle. Excellent cold shaping qualities normally connected with the nickel-chromium alloys are shown with 800HT. At the point when cold shaped, broadly the grain size delivers an obviously undulated surface called "orange peel". Incoloy 800HT can be welded by the normal process utilized on stainless steels.