Incoloy 800HT Bright Surface Nickel Alloy Tube
Incoloy 800HT Bright Surface Nickel Alloy Tube
Incoloy 800HT bright finish nickel alloy tubing (UNS N08811) is an iron-nickel-chromium superalloy designed to provide exceptional strength and stability in extreme high-temperature environments, particularly suitable for applications requiring enhanced creep resistance and stress fracture resistance. "Bright finish" typically refers to a highly polished or bright annealed (BA) state, which improves surface integrity and usually eliminates the need for subsequent pickling.
What is the difference between INCOLOY 800 and Alloy 800?
Incoloy 800 is primarily used for applications where the temperature does not exceed 1100°F, while Alloy 800H and 800HT are typically used for applications where the temperature is above 1100°F and creep and fracture resistance are required.
Specifications for Incoloy Alloy 800HT/825 Seamless Pipes, Alloy 800HT/825 Tubing's, UNS N08800, UNS N08825
| Seamless Pipe / Tubing | Welded Pipe / Tubing | |
| Incoloy 800 | ASTM B 407 / 163 | ASTM B 514 / 515 |
| ASME SB 407 / 163 | ASME SB 514 / 515 | |
| Incoloy 800H | ASTM B 407 / 163 | ASTM B 514 / 515 |
| ASME SB 407 / 163 | ASME SB 514 / 515 | |
| Incoloy 800HT | ASTM B 407 / 163 | ASTM B 514 / 515 |
| ASME B 407 / 163 | ASME SB 514 / 515 | |
| Incoloy 825 | ASTM B 423 / 163 | ASTM B 705 / 704 |
| ASME SB 423 / 163 |
ASME SB 705 / 704 |
Incoloy Alloy 800HT/825 Seamless Pipes, Alloy 800HT/825 Tubing's, UNS N08800, UNS N08825 Chemical Composition %
| Alloy 825 | Ni | Fe | Cr | Mb | Cu | Ti | C | Mn | S | Si | Al |
| 38.0-46.0 | 22.0 min | 19.5-23.5 | 2.5-3.5 | 1.5-3.0 | 0.6-1.2 | 0.05 max | 1.0 max | 0.03 max | 0.5 max | 0.2 max | |
| Alloy 800 | Ni | Fe | Cr | Cu | Ti | Al | C | Mn | S | Si | |
| 30.0-35.0 | 39.5 min | 19.0-23.0 | 0.75 max | 0.15-0.60 | 0.15-0.60 | 0.1 max | 1.5 max | 0.015 max | 1.0 max | ||
| Alloy 800H | Ni | Fe | Cr | Cu | Ti | Al | C | Mn | S | Si | |
| 30.0-35.0 | 39.5 min | 19.0-23.0 | 0.75 max | 0.15-0.60 | 0.15-0.60 | 0.05-0.10 max | 1.5 max | 0.015 max | 1.0 max | ||
| Alloy 800HT | Ni | Fe | Cr | Cu | Ti | Al | C | Mn | S | Si | |
| 30.0-35.0 | 39.5 min | 19.0-23.0 | 0.75 max | 0.25-0.60 | 0.85-1.20 | 0.06-0.10 max | 1.5 max | 0.015 max | 1.0 max |
Incoloy Alloy 800HT/825 Seamless Pipes, Alloy 800HT/825 Tubing's, UNS N08800, UNS N08825 Mechanical Properties
| INCOLOY 800 | INCOLOY 800H | INCOLOY 800HT | INCOLOY 825 | |
| Density | 7.94 g/cm3 | 7.94 g/cm3 | 7.94 g/cm3 | 8.1 g/cm³ |
| Melting Range,℃ | 1350-1400 ℃ | 1350-1400 ℃ | 1350-1400 ℃ | 1370-1400 |
| Elongation % | 30-35 | 30-35 | 30-35 | 30 |
| Tensile strength – Mpa | 500 | 500 | 500 | 550 |
| Yield strength – Mpa | 205 | 200 | 200 | 220 |
| Brinell hardness (HB) | – | – | – | ≤200 |
| NICKEL ALLOYS | TRADENAME | UNS NO. | WERKSTOFF NO. | DENSITY (8.8 G/CM3) |
| Alloy 800 | Incoloy 800 | N08800 | 1.4876 | 8.0 |
| Alloy 800H | Incoloy 800H | N08810 | 1.4876 | 8.0 |
| Alloy 800HT | Incoloy 800HT | N08811 | 1.4876 | 8.0 |
| Alloy 825 | Incoloy 825 | N08825 | 2.4858 | 8.18 |
Incoloy 800HT shares many of the superior properties of Incoloy 800H, including:
• Excellent resistance to oxidation, sulfidation, and carburization.
• Enhanced creep and fracture resistance at temperatures above 1100°F (600°C).
• Resistance to high-temperature corrosion and long-term exposure.
• Ease of processing using standard methods.
• Resistance to aqueous solutions at moderate temperatures.
Users of Incoloy 800HT and nickel alloy 800HT use them in a variety of high-temperature applications, including:
• Hydrocarbon cracking.
• Industrial furnace and boiler components and equipment.
• Heat treatment equipment.
• Pressure vessels and heat exchangers.
• Chemical and petrochemical processing.
Why Choose Gnee Nickel Alloy (Supplier Example)?
✅ Large stock of Incoloy 800/800H/800HT alloy tubes/bars/plates/fittings, fast shipping.
✅ Factory direct sales, highly competitive prices, excellent value for money.
✅ Comprehensive quality assurance: Material Testing Certificate (MTC), chemical composition certificate, and mechanical properties certificate.
✅ Value-added services: slitting, cutting, polishing, surface treatment.
✅ Worldwide shipping, secure and reliable packaging, and provision of export-required documents.
Email: ss@gneesteel.com
Gnee Steel is a supplier of Incoloy 800/800H/800HT steel, offering a wide range of products including: seamless pipe (sizes: 4-219 mm; thickness: 0.5-20 mm); welded pipe (sizes: 5.0-1219.2 mm; thickness: 0.5-20 mm); plates (thickness 0.1 to 100 mm; width 10-2500 mm); strips; alloy round bars (diameter 3-800 mm); flat bars (thickness 2-100 mm; width 10-500 mm); hexagonal bars (size 2-100 mm); wire rods; and extruded profiles. We collaborate with steel mills to provide our customers with 800 series alloys, meeting or exceeding numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS standards.
Gnee Steel stocks and sells Incoloy 800/800H/800HT steel, including pipes, plates, strips, round bars, flat bars, forged billets, hexagonal steel, wire rods, and extruded profiles. Please feel free to contact us at ss@gneesteel.com for a quote.
