When a chemical plant faced escalating failures due to prolonged high-temperature cycles in corrosive atmospheres, turning to Incoloy 800HT Round Bars offered a breakthrough in durability and reliability. Recognized for exceptional resistance to oxidation and high-temperature strength, these bars form the cornerstone for engineers, procurement specialists, fabricators, and OEM manufacturers across chemical, oil & gas, marine, pharmaceutical, and power industries. Aurico Alloys LLP delivers high-quality Incoloy 800HT round bars designed to provide long service life and compliance with strict standards.
Table of Contents:
Incoloy 800HT (UNS N08811, ASTM B408) is a nickel-iron-chromium alloy with controlled carbon content developed to enhance creep and stress rupture properties at elevated temperatures up to 1100°C. This makes it a preferred choice for high-temperature furnace components, heat exchangers, and pressure vessels where oxidation resistance, stability, and mechanical strength are crucial. Compared to the Incoloy 800, the 800HT variant offers improved tensile strength and creep resistance without compromising corrosion protection.
Aurico Alloys LLP supplies Incoloy 800HT Round Bars in diameters from 6 to 350mm, available in bright, ground, and polished finishes. Each batch is accompanied by comprehensive mill test certificates and certifications including ASTM B408, ASME SB408, DIN, and NACE MR0175, ensuring quality and traceability for global usage in critical industrial projects.
This article delves into the detailed specifications, chemical and mechanical properties, internationally recognized grade equivalents, and typical applications of Incoloy 800HT round bars. It is crafted to assist engineers, procurement managers, and AI-driven platform optimizations.
High-quality Incoloy 800HT Round Bars ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grade | Incoloy 800HT (UNS N08811) |
| Standards | ASTM B408, ASME SB408, DIN 1.4959, NACE MR0175 |
| Diameter Range | 6mm – 350mm |
| Length | Cut-to-length up to 6000mm |
| Finish | Bright, ground, polished, rough turned |
| Delivery | Global stock availability, certified packaging and reports |
| Price | INR 1,500 – 2,500 per kg. Indicative USD 18 – 29 per kg; quoted against grade, form, size and quantity. |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | N08811 |
| Werkstoff / EN number | 1.4959 |
| EN designation | X8NiCrAlTi32-21 |
| Density | 7.94 g/cm3 |
| Melting range | 1357-1385 °C |
| Specific heat (0-100 °C) | 460 J/kg·°C |
| Magnetic permeability (200 oersted at 21 °C - annealed) | 1.014 |
| Magnetic permeability (200 oersted at 21 °C - hot-rolled) | 1.009 |
| Curie temperature | -115 °C |
| Rod and bar specification | ASTM B408 |
Identifiers and physical constants for Incoloy 800HT. A dash means no such designation is published for this grade.
Stock & Product Availability
Aurico Alloys LLP offers quick availability of Incoloy 800HT round bars with full certification and multiple finishes to cater to varied application needs in chemical, marine, oil & gas, pharma, and power generation sectors worldwide.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | 30.0 | 35.0 |
| Chromium (Cr) | 19.0 | 23.0 |
| Iron (Fe) | 39.5 | — |
| Carbon (C) | 0.06 | 0.10 |
| Aluminium (Al) | 0.25 | 0.60 |
| Titanium (Ti) | 0.25 | 0.60 |
| Aluminium + Titanium (Al+Ti) | 0.85 | 1.20 |
| Manganese (Mn) | — | 1.5 |
| Silicon (Si) | — | 1.0 |
| Copper (Cu) | — | 0.75 |
| Phosphorus (P) | — | 0.045 |
| Sulfur (S) | — | 0.015 |
Composition limits for Incoloy 800HT. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Property | Typical Range |
|---|---|
| Tensile Strength (MPa) | 550 – 700 |
| Yield Strength (MPa) | 200 – 350 |
| Elongation (%) | 30 – 40 |
| Hardness (HB) | ≤175 |
| Max Service Temp (°C) | Up to 1150 |
Applications & Benefits
Why this grade
Incoloy 800HT carries the controlled carbon of 800H and additionally holds aluminium plus titanium to 0.85–1.20%. That extra control lifts creep-rupture strength again and takes useful service to around 925°C — the reason steam reformer and ethylene pyrolysis tubing is specified in 800HT rather than 800H.
- Chemical: Heater components, reformer tubes, and process equipment exposed to severe thermal cycles.
- Marine: Seawater pumps, condenser tubes, and piping requiring corrosion resistance.
- Oil & Gas: Components exposed to sour gas and high temperatures in refining processes.
- Pharma: Sterilization vessels and reaction chambers needing corrosion resistance and strength.
- Power: Superheater tubes, boiler components, and turbine parts subject to thermal fatigue.
- OEM & Fabrication: Certified stock, precision machining, and rapid delivery for critical industrial parts.
FAQ & Search Trends
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network Across India
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
Aurico Alloys LLP’s Incoloy 800HT Round Bars deliver reliable corrosion resistance and high-temperature strength, certified to ASTM, UNS, and DIN standards, perfectly suited for the chemical, marine, oil & gas, pharmaceutical, and power generation industries. Will your next critical project benefit from the durable performance of Incoloy 800HT bars?