Based in the industrious heart of Hamilton, New Zealand, Neesham Flanges has built a reputation as a trusted partner for high-performance components. Our specialty lies in supplying robust Incoloy 800, 800H, and 800HT flanges, engineered for the most challenging environments. We understand that reliability is non-negotiable in industries where pressure and temperature extremes are the norm. That’s why we focus on delivering flanges that offer exceptional strength and longevity, providing our clients with the confidence that their critical systems are backed by quality New Zealand craftsmanship and material excellence.
Incoloy 800, 800H, and 800HT are distinguished by their carefully balanced composition, primarily nickel, chromium, and iron. This blend grants them outstanding resistance to oxidation and carburization. The key difference lies in their mechanical properties, tailored for specific service conditions. While all three offer good strength, the 800H and 800HT grades are controlled to have a higher creep-rupture strength, making them the preferred choice for sustained high-temperature applications where maintaining integrity under stress over long periods is absolutely essential.
Specifications : ASTM B564 / ASME SB564
Dimensions : ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size : 1/2″ (15 NB) to 48″ (1200NB)
Class/Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Type : Slip on flanges, Socket weld flanges, Forged flanges, Blind flanges, Welding neck flange, Ring type joint flange, Spectacle blind flange, Reducing flange, Threaded / Screwed flange, Tongue and Groove flange, Long weld neck flange, Flat flange, Industrial flanges, Plate flange, ASME B16.5 flanges.
Neesham Flanges, a leading supplier in Hamilton, New Zealand, offers an extensive selection of Incoloy 800/800H/800HT Flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| Incoloy 800 | 0.10 max | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30 – 35 | 19 – 23 | 0.15 – 0.60 | 0.15 – 0.60 |
| Incoloy 800H | 0.05 – 0.10 | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30 – 35 | 19 – 23 | 0.15 – 0.60 | 0.15 – 0.60 |
| Incoloy 800HT | 0.06 – 0.10 | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30 – 35 | 19 – 23 | 0.15 – 0.60 | 0.15 – 0.60 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 7.94 g/cm3 | 1385 °C (2525 °F) | Psi – 75,000 , MPa – 520 | Psi – 30,000 , MPa – 205 | 30 % |
Incoloy 800, 800H and 800HT flanges are used extensively in high-temperature and hot environment applications. Their superior oxidation and carburization resistance makes them best suited for furnace parts, heat exchangers and petrochemical processes. In electrical power generation, these flanges are employed in reheaters and superheaters, where stability at high temperatures is necessary. Furthermore, they find application in chemical and nuclear plants, with equipment being exposed to acid and sulfur environments. Their strength and resistance to thermal stresses guarantee durability in sophisticated applications involving long-term usage.
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN | OR |
| Incoloy 800 | 1.4876 | N08800 | NCF 800 | NA 15 | ЭИ670 | Z8NC32-21 | X10NiCrAlTi32-20 | XH32T |
| Incoloy 800H | 1.4958 / 1.4876 | N08810 | NCF 800H | NA 15(H) | ЭИ670 | Z8NC33-21 | X5NiCrAlTi31-20 | XH32T |
| Incoloy 800HT | 1.4859 / 1.4876 | N08811 | NCF 800HT | NA 15(HT) | ЭИ670 | – | X8NiCrAlTi32-21 | XH32T |
Yes, we offer custom sizes for Incoloy 800/800H/800HT Flanges to meet specific project needs. Our team at Neesham Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@neeshamflanges.com.
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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