Luois Metals provides Incoloy 800H forgings—theory of a little difference to 800HT—designed for consistent mechanical performance to 850 °C from our facility in Houston. Produced to ASTM B407/B434 standards, 800H components are fully annealed to be delivered. The alloy is designed to provide creep rupture strength and stable high-temperature properties. With material certifications and precision forging, Luois Metals offers reliable solutions for chemical plants, power plants, and furnace systems that assure components deliver stringent performance requirements even when exposed to thermal cycling.
Incoloy 800H alloy contains Ni 30–35%, Fe 39.5–44.5%, Cr 19.5–23%, with Al and Ti. Offers tensile strength ~550 MPa, yield ~275 MPa, and elongation ~40%, with enhanced creep strength at 700–850 °C. Hardness is ~190 HB. Stable grain structure is maintained by 800H with good carburization and decarburization resistance. Satisfies ASTM B407/B434 forging specification.
Specifications ASTM B564 / ASME SB564, AMS 5766
Flat bar blocks up to 27″ width and 15,000 lbs.
Cylinders and sleeves up to 50″ maximum O.D. and 65″ maximum length
Discs and hubs up to 50″ diameter and 20,000 lbs.
Rolled, hand forged or mandrel forged rings up to 84″ maximum O.D. and 40″ maximum length
Rounds, shafts and step shafts up to 144″ maximum length and 20,000 lbs.
| Grade | Ni | Fe | Cr | Cu | Ti | Al | C | Mn | S | Si |
| Alloy 800H | 30.0-35.0 | 39.5 min | 19.0-23.0 | .75 max | .15-.60 | .15-.60 | .05-.10 max | 1.5 max | .015 max | 1.0 max |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.94 g/cm3 | 1350-1400 ℃ | Psi – 75,000 , MPa -520 | Psi – 30,000 , MPa – 205 | 30 – 35 % |
| Density | 0.287 lb/in3 / 7.94 g/cm3 |
| Melting Point | 2475 – 2525 °F/ 1357 – 1385 °C |
| Specific Heat @ 70°F | 0.11 Btu/lb•°F |
| Permeability @ 70°F Annealed | 1.014 (200 Oersted) |
| Curie Temperature | -115 °C/ -175 °F |
| Elastic Modulus | 28.50 X 106 psi |
| Electrical Resistivity @ 70°F | 595 ohm•circ mil/ft |
| Annealling Incoloy 800 | 983 – 1038 °C / 1800 – 1900 °F |
| Annealling Incoloy 800H / Ht | 1147 – 1177°C / 2100 – 2150 °F |
| Quench | Rapid Air / Water |
| STANDARD | UNS | WNR. | AFNOR | EN | JIS | BS | GOST | OR |
| Incoloy 800H | N08810 | 1.4958 | Z8NC32-21 | X10NiCrAlTi32-20 | NCF 800H | NA 15(H) | ЭИ670 | XH32T |
The ideal temperature range for forging Incoloy 800H is between 2100°F and 2250°F (1149°C to 1232°C). This range ensures optimal workability and preserves the material’s mechanical properties.
Post-forging operations for Incoloy 800H typically include annealing to relieve stress and enhance ductility, followed by heat treatment to achieve desired mechanical properties. Surface cleaning and inspection for defects are also essential to ensure quality.
To determine if Incoloy 800H Forgings meet your specific needs, review material specifications, including composition and mechanical properties, and consult with suppliers for customized testing or performance data. Additionally, consider your application's temperature, corrosion, and mechanical requirements.
Incoloy 800H forgings find applications in exhaust systems of aircraft, heat exchanger parts, gas turbine ducting, and nuclear and chemical industries‘ pipework. They‘re selected for high-temperature and corrosive environment-resistant piping, headers, and structures. In furnace equipment, they‘re utilized in radiant tubes, muffles, and ducts. Their thermal cycling stability and oxidation resistance render them suitable for extended use in heat-intensive industrial processes.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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