The core value of Incoloy 800HT alloy lies in its carefully designed chemical composition. Its nickel content is controlled between 30.0% and 35.0%, a composition that ensures the material's structural stability and corrosion resistance at high temperatures. HT PIPE is a incoloy 800ht pipe supplier with 15+ export experience. Contact us for more information and quotes for free!
incoloy 800ht High-temperature performance
Incoloy 800HT alloy has excellent resistance to high-temperature oxidation and creep in the high-temperature range of 700°C to 1100°C. Its carbon content is controlled within a specific range, and stabilization strengthening with aluminum and titanium elements allows it to maintain structural integrity and dimensional stability under long-term high-temperature stress.
alloy 800ht Broad corrosion resistance
Incoloy 800HT alloy effectively resists attack from a variety of corrosive media, including oxidizing media (such as nitric acid), most organic acids, and alkaline solutions. Its high nickel-chromium content also provides good resistance to chloride stress corrosion cracking, making it suitable for environments containing chloride ions.
Din 1.4959 mechanical properties and machinability
Alloy 800ht possesses high strength and good ductility from room temperature to high temperatures. Although its work hardening rate is relatively high, it can still be cold and hot formed, machined, and welded using standard processes. With appropriate welding processes (such as TIG welding), the weld seam maintains corrosion resistance similar to the base metal.
Incoloy 800ht pipe Application
UNS N08811 in Cracking Furnace Tubes and Manifolds
Ethylene cracking furnaces operate at 850-1050℃. Carbon deposits in the cracked gas can easily lead to carburization embrittlement of the material, and hydrogen sulfide can cause corrosion cracking.
Radiant section furnace tubes and outlet manifolds made of Incoloy 800HT resist carbon penetration and sulfide corrosion, and are less prone to diameter expansion or fracture due to creep under long-term high temperatures.
alloy n08811 in Reactor Internals and Heat Exchanger Tubes
In hydroprocessing, high-temperature, high-pressure hydrogen at 300-800℃ can easily cause "hydrogen embrittlement" of the material, and hydrogen sulfide exacerbates corrosion.
The nickel-based composition of Incoloy 800HT inhibits hydrogen atom penetration, and the chromium-aluminum composite oxide film resists dual corrosion. Reactor distribution plates, support beams, and heat exchanger tubes made from it can withstand the weight of the catalyst and maintain stability in harsh environments.
incoloy 1.4959 in Conversion Furnace Tubes
The conversion reaction of natural gas and steam needs to be carried out at 800-950℃. Furnace tubes are susceptible to stress cracking due to uneven heat flow, and carbon deposits on the inner wall affect heat transfer.
The linear expansion coefficient of Incoloy 800HT matches that of the furnace refractory material, reducing the risk of thermal stress. Its resistance to steam oxidation and carbon deposition extends the service life of the furnace tubes.
alloy 800ht in Heating Furnace Tubes
The heating furnace of a delayed coking unit needs to heat residual oil to 480-510℃. The residual carbon in the oil easily forms coke, and the sulfur content corrodes the furnace tubes.
Incoloy 800HT has superior high-temperature thermal conductivity compared to ordinary carbon steel, which reduces coking. Its resistance to sulfide corrosion keeps the annual corrosion rate within 0.2 mm, and it can withstand high-temperature steam scouring during decoking without deformation.
Trust HT PIPE for Your ASTM B407 Incoloy 800HT Requirements
Zhengzhou Huitong Pipeline Equipment Co., Ltd. supplies high-caliber Incoloy 800HT seamless and welded pipes manufactured in strict accordance with ASTM B407, ASME SB407, and related international testing standards. We accommodate custom schedule wall thicknesses, cut-to-length dimensions, and specialized pipe spool pre-fabrications.
All shipments are accompanied by complete EN 10204 3.1 Mill Test Certificates verifying chemical trace details and mechanical stress metrics. We regularly coordinate third-party oversight inspections with world-renowned bureaus including SGS, BV, TUV, and DNV to guarantee field deployment readiness.
Partner with an experienced industrial exporter. Contact our technical sales engineering division today to receive detailed pricing matrixes, stock availability charts, or a rapid commercial quotation.
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