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Incoloy Alloy 800H Pipes & Tubes

Material Description

UNS N08810

Chemical Composition, %












39.5 min


.75 max




1.5 max

.015 max

1.0 max

Incoloy alloy 800H is nickel-iron-chromium alloys with good strength and excellent resistance to oxidation and carburization in high-temperature exposure. The nickel alloy is dual certified (800H/HT) and combines the properties of both forms. Incoloy alloy 800H alloy was intended for high temperature structural applications. The nickel content makes the alloys highly resistant to both chloride stress-corrosion cracking and to embrittlement from precipitation of sigma phase. The general corrosion resistance is excellent. In the solution annealed condition, alloys 800H has superior creep and stress rupture properties.

Incoloy alloy 800H is normally used in temperatures above 1100° F where resistance to creep and rupture is required. The chemical balance allows the nickel steel alloy to exhibit excellent resistance to carburization, oxidation and nitriding atmospheres.


● High temperature strength

● High creep rupture strength

● Resistant to oxidation and carburization in high temperature environments

● Good corrosion resistance in many acidic environments

● Good resistance to many sulfur-containing atmospheres


● Tubing has exposure to corrosive environments and high temperatures such as heat treating equipment, chemical and petrochemical processing, nuclear power plants and the paper pulp industry.

● Heat-treating equipment such as baskets, trays, and fixtures

● Heat exchanger tubing and piping system for Chemical and petrochemical processing industries in nitric acid media especially where resistance to chloride stress-corrosion cracking is required.

● Power plants use them for super-heater tubing and re-heater tubing

Seamless Tube Information:

Specification: ASTM B-163 / ASME SB-163, ASTM B-407 / ASME SB-407, ASTM B-622 / ASME SB-622

Outside Diameter: 6.0-114 mm

Wall Thickness: 0.5-15 mm

Length: Max.24000mm (the maximum length is for the scope of special diameters and walls)

Other sizes are on the request