Chung Metal offers Incoloy 800H Forgings, designed for high temperature, high stress service in hostile environments. Incoloy 800H is a nickel‑iron‑chromium alloy with carbon added for increased creep and stress‑rupture strength. Our 800H forging processes ensure proper grain structure, chemistry uniformity, and excellent mechanical integrity at elevated temperatures. These forgings are applied in components operating at high temperatures like furnace components, pressure vessels, and piping in petrochemical, chemical, power generation, and oil & gas applications where corrosion resistance and high temperature strength are needed.
Incoloy 800H has a composition of approximately 30‑35% nickel, 19‑23% chromium, balance iron, and 0.05‑0.10% carbon. Small additions of manganese, silicon, aluminum, and titanium are present in the alloy. Tensile strength is minimum ~450‑600 MPa (depending on condition), yield strength ~170‑300 MPa, elongation ~30‑45%. High creep resistance at high temperatures (600‑900 °C). Favorable oxidation, carburization, and corrosion resistance at high temperature. Density ~8.0 g/cm³.
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 are applied for high temperature furnace components (muffles, radiant tubes), steam generator and superheater components, petrochemical reformer tubing, piping and vessels for sulfuric acid service, heat exchangers, and boiler components. Also applied for nuclear power, chemical plants, oil refineries where strength at temperature as well as resistance to corrosion are important. In cyclic thermal stressing conditions or where carburization or scaling are danger, 800H is usually chosen due to its capacity to provide structural integrity over extended life of operation.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Chung Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Da Nang, Vietnam
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