Incoloy 800HT
UNS N08811
Catalog
Arialloy are carefully crafted using only the finest materials. Our production team offers superior craftsmanship with over 10 years of experience working with incoloy 800ht tubes / sheets / wires / bars / fittings
Incoloy 800HT Material Properties
UNS N08811 Overview
Explore the chemical composition, corrosion resistance, mechanical properties, and temperature characteristics of incoloy 800ht for optimal resistance, strength, and stability
Incoloy 800HT Chemical Composition
Incoloy 800HT Material Properties Overview
As a nickel alloy manufacturer and supplier in China, Arialloy supplies cost effective incoloy 800HT products.
Incoloy 800HT (UNS N08811 / W.Nr. 1.4959) is an austenitic nickel, iron and chromium alloy that combines resistance to elevated temperature corrosion with enhanced creep and stress rupture strength. Its composition includes 30.0 to 35.0% nickel and 19.0 to 23.0% chromium. Nickel stabilizes the austenitic structure, while chromium promotes a protective surface oxide. Carbon is restricted to 0.06 to 0.10%, and the combined aluminum and titanium content is 0.85 to 1.20%. These composition limits distinguish incoloy 800HT from incoloy 800H and contribute to improved strength under sustained loading at elevated temperatures.
The alloy requires solution annealing at a minimum of 1149°C (2100°F) and an average grain size of ASTM 5 or coarser. This material condition supports its resistance to creep. Conventional hot forming, cold forming and machining methods can be used, although work hardening must be considered during fabrication. Welding requires filler metal selection that accounts for the intended temperature and joint properties.
Its principal advantage over incoloy 800 is stronger resistance to creep during prolonged heating. Composition, grain size and heat treatment should therefore be reviewed together when specifying or comparing incoloy 800HT products.
Incoloy 800HT Corrosion Resistance
Incoloy 800HT offers good resistance to oxidation, carburization and many atmospheres containing sulfur at elevated temperatures. Chromium promotes a protective oxide film, while nickel contributes to resistance against carbon absorption. This film helps maintain protection during repeated heating and cooling.
The alloy also resists chloride stress corrosion cracking. However, its carbon content and thermal history can increase susceptibility to intergranular corrosion in certain aqueous environments. Corrosion performance therefore depends on temperature, gas composition, exposure time, surface condition and whether corrosive liquids or condensates are present.
Incoloy 800HT Mechanical Properties
In the solution annealed condition, incoloy 800HT combines moderate room temperature strength with good ductility. Published values for selected wrought products include tensile strength of 450 to 700 MPa, a minimum 0.2% proof strength of 170 MPa, and elongation of at least 30%. Its main mechanical advantage is resistance to creep and stress rupture during prolonged heating.
Actual acceptance requirements depend on product form, dimensions, heat treatment, specimen orientation and the governing material specification.
Incoloy 800HT Temperature Characteristics
Incoloy 800HT provides strong resistance to creep and stress rupture, particularly above 700°C (1292°F). Oxidation resistance can extend to approximately 1100°C (2012°F) in air, although allowable operating temperatures depend on stress, atmosphere and exposure duration. Prolonged exposure around 600 to 700°C (1112 to 1292°F) can promote gamma prime precipitation and reduce ductility.
Thermal conductivity and expansion increase with temperature, while elastic modulus decreases, influencing dimensional changes and mechanical response during heating. The practical temperature limit must also account for required service life and permissible deformation.
Incoloy 800HT Products
Nickel Alloy 800HT Product Types
With advanced equipment and expert craftsmanship, we create durable, high performance nickel alloy 800ht products tailored to each project’s needs
Incoloy 800HT Data Sheet
Incoloy Alloy 800HT Data Sheet
Access / download the incoloy 800ht data sheet to gain in depth insights into precise physical and processing parameters
ensuring the selection of the optimal nickel alloy material for your project
Physical Properties
| Density | g/cm3 | 7.94 | |
|---|---|---|---|
| lb/in.3 | 0.287 | ||
| Melting Range | °F | 2475 - 2525 | |
| °C | 1357 - 1385 | ||
| Specific Heat | 32-212°F | Btu/lb•°F | 0.11 |
| 0-100°C | J/kg•°C | 460 | |
| Permeability at 70°F (21°C) and 200 oersted (15.9 kA/m) | Annealed | 1.014 | |
| Hot-Rolled | 1.009 | ||
| Curie Temperature | °F | -175 | |
| °C | -115 | ||
Mechanical Properties
| Temperature | Hardness BHN | Tensile Strength | Yield Strength (0.2% Offset) | |||
|---|---|---|---|---|---|---|
| °F | °C | ksi | MPa | ksi | MPa | |
| 80 | 27 | 126 | 77.8 | 536 | 21.7 | 150 |
| 800 | 425 | – | 67.5 | 465 | 18.8 | 130 |
| 1000 | 540 | 90 | 62.7 | 432 | 13.0 | 90 |
| 1200 | 650 | 84 | 54.8 | 378 | 13.5 | 93 |
| 1300 | 705 | 82 | 47.7 | 329 | 15.8 | 109 |
| 1400 | 760 | 74 | 34.2 | 236 | 13.1 | 90 |
Incoloy 800HT Standards
UNS N08811 Specifications & Standards
From production to inspection, we meet strict quality standards, addressing tolerance and chemical composition needs
ASTM B163
Condensor and Heat Exchanger Tube
ASTM B407
Seamless Pipe & Tube
ASTM B829
Seamless Pipe & Tube
ASTM B514
Welded Pipe
ASTM B775
Welded Pipe
ASTM B515
Welded Tube
ASTM B751
Welded Tube
ASTM B366
Welded Fittings
ASTM B408
Rod and Bar
ASTM B564
Forgings
ASTM B409
Plate, Sheet and Strip
ASTM B906
Plate, Sheet and Strip
ASTM A240
Plate, Sheet and Strip
ASTM A480
Plate, Sheet and Strip
Incoloy 800HT SHOW
Nickel Alloy 800HT Showcase
From initial samples to large scale production, we supply high quality incoloy 800ht products and help you achieve your manufacturing goals.
Upload Your Requirements
To begin, provide your contact details with the product type, dimensions, quantity, and required standards. If you have CAD drawings, specifications, or special tolerance requirements, please upload them
Receive a Quote & Design Review
Within 12 hours, we’ll send you a detailed quote and (custom) design for manufacturability (DFM) feedback. This ensures the cost feasibility of your custom project and gives you a clear idea of the costs involved
Confirm Your Order & Begin Production
Once you approve the quote and design, your project will enter our production queue the morning after we receive your confirmation
Shipping & Delivery
On average, custom production orders ship within 20–45 business days. In stock products and samples ship within 48 hours
Just 4 Steps
Custom Incoloy 800HT Quotation Process
From detailed consultation to final delivery, we make custom incoloy 800ht product orders simple and convenient. With exceptional customer service, we anticipate your needs, provide professional solutions, and ensure on time delivery
Incoloy 800HT Supplier - Arialloy
From Production to Quality Control, Every Step Tailored to Perfection
Arialloy incoloy alloy 800ht manufacturer has always been at the forefront of the industry. With its unremitting pursuit of quality, precision, and professional solutions, Arialloy has gradually established a complete production system and rapid supply capabilities. By continuously improving manufacturing processes, adopting cutting edge equipment, and adhering to strict quality control, Arialloy ensures that every product meets the highest requirements for durability, precision, and international standards
Incoloy 800HT Applications
UNS N08811 Alloy Solutions
We serving diverse industries, focus on strict quality control and full scale production, turning your vision into reality with professional expertise and attention to detail
Incoloy 800HT Knowledge
Nickel Alloy 800HT Wiki
Arialloy explores with you every factor that influences your choice
including chemical composition, mechanical properties, temperature characteristics, price, and manufacturing process
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Custom Incoloy 800HT FAQs
Our team of experts is here to support you every step of the way, helping transform your vision into reality. Explore FAQs for related support
If you would like to order incoloy 800ht, email your requirements to sales@arialloy.com or complete the inquiry form at the bottom of this page. Our sales team will prepare a detailed offer based on your request. After you confirm the offer, send us your PO. We will issue a PI, and production will begin following receipt of the prepayment. We will notify you when your materials are ready.
We strive to provide an incoloy 800ht quote within 24 hours of receiving your inquiry. If we are unable to quote because of missing information or other limitations, we will let you know promptly.
Our incoloy 800ht quotation is generally FOB, with the buyer normally responsible for designating the forwarder. We will assist the forwarder with the necessary local operations to ensure the shipment can proceed smoothly. If desired, we can arrange the transportation ourselves and calculate the corresponding freight cost.
Incoloy 800HT pricing reflects, in part, the cost of its metallic raw materials. When key metals such as nickel, iron, and chromium experience market fluctuations, those changes can work their way into the cost of producing and supplying the alloy.
Our incoloy 800ht material is smelted at our factory rather than being purchased from an outside source. We operate over 30 furnaces for vacuum smelting and electroslag remelting, with capacities of 50 kg, 200 kg, 1,000 kg, and 5,000 kg. This allows us to accommodate different production volumes, including smaller orders.
We issue the incoloy 800ht MTR before delivery in accordance with relevant industry standards. The report contains the material specification, chemical analysis, mechanical test data, dimensions, and heat identification.
We manage the incoloy 800ht material blend during smelting and perform chemical analyses to monitor the alloy composition. After manufacturing, PMI testing is used to check the finished material, with third-party laboratory testing available for additional confirmation.