
Incoloy 800 (UNS N08800 / W.Nr. 1.4876) is the foundational solid-solution strengthened superalloy in the nickel-iron-chromium series. It is engineered for structural components requiring reliable strength along with excellent resistance to oxidation, carburization, and aqueous corrosion at service temperatures up to 1100F (600C).
Unlike higher-temperature sub-grades (800H and 800HT) which mandate a coarse grain structure for creep-rupture performance, standard Alloy 800 is typically processed in a fine-grained, mill-annealed state. This provides superior baseline tensile strength, yield strength, and fatigue resistance for mid-range temperature applications.
Chemical Matrix: 30.035.0% Nickel (Ni), 19.023.0% Chromium (Cr), minimum 39.5% Iron (Fe) balance, with controlled maximum carbon ($\le$ 0.10%), aluminum (0.150.60%), and titanium (0.150.60%).
Corrosion Resistance: The high nickel content delivers exceptional immunity against chloride-ion stress corrosion cracking (SCC), while chromium forms a stable protective oxide layer to block scaling in hot atmospheres.
Mechanical Baseline: Provides a high structural baseline with a tensile strength of $\ge$ 520 MPa (75 ksi) and a yield strength of $\ge$ 205 MPa (30 ksi).
Industrial vendors supply these alloy round bars in hot-rolled or precision smooth-turned conditions. Because the base chemistry overlaps, inventory is frequently cross-stocked under multi-certification (800/800H/800HT) to comply with various design specifications:
For standard processing components, heavy-duty machining tasks, or heat exchanger hardware, the Incoloy 800 Round Bar profile satisfies standard ASTM B408 / ASME SB408 raw material parameters.
For custom multi-rated manufacturing setups where cross-compatibility is key, comprehensive configurations like the INCONEL 800 / H / HT ROUNDBAR, For Industrial, Size: 2 MM To 250 MM cover a massive dimensional scope to match specific project prints.
Chemical Processing: Industrial pump components, agitator shafting, mixing valves, and specialized fasteners interacting with corrosive organic acids or nitric media.
Thermal Systems: Sheathing arrays for electric heating elements, heat exchanger internals, and mid-temperature pressure piping.
Cryogenic Hardiness: Because its stable austenitic structure prevents low-temperature embrittlement, it retains remarkable impact toughness in deeply sub-zero environments.
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