Table of Contents
- Incoloy 800/800H/800HT Round Bars Overview
- Technical Specifications
- Mechanical Properties & Chemical Composition
- Types of Incoloy 800/800H/800HT Round Bars
- Key Advantages of UNS N08800 / N08810 / N08811 Round Bars
- Key Applications of Incoloy 800/800H/800HT Round Bars
- Quality Testing & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Incoloy 800/800H/800HT Round Bars Supplier & Exporter
For hydrocarbon cracking furnaces, industrial pigtails, and power plant superheaters requiring high creep strength, Aurum Overseas provides precision round bars. As a trusted Incoloy 800/800H/800HT Round Bars Supplier and Exporter, we supply nickel-iron-chromium alloy bars built to resist high-temperature oxidation and carburization.
-round-bar.webp "Incoloy 800H/800HT Round Bars")
We offer UNS N08800 / N08810 / N08811 Round Bars meeting ASTM B408, ASTM A276, and ASTM A479 standards in metric and imperial dimensions. Our stock includes Incoloy 800 Bright Bars for automated machining and Incoloy 800 Forged Bars for heavy furnace supports, all backed by EN 10204 3.1 MTR certifications.
We export these specialized high-temperature alloy bars across North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy, Netherlands, Norway), the Middle East (UAE, Saudi Arabia, Qatar, Kuwait, Oman), and Asia-Pacific (Singapore, Malaysia, Australia).
Technical Specifications
| Technical Parameter | Standard Specification |
|---|---|
| Material Grade | Incoloy 800 / 800H / 800HT |
| UNS Designation | UNS N08800 / UNS N08810 / UNS N08811 |
| Werkstoff Number | 1.4876 / 1.4958 / 1.4859 |
| Manufacturing Standards | ASTM B408, ASTM A276, ASTM A479, ASME SB408, EN 10095, DIN 17460 |
| Diameter Capability | Imperial: 1/8" to 20" NB | Metric: 3 mm to 500 mm |
| Length Options | 3 Meters, 6 Meters, Random Lengths, Custom Cut-to-Length |
| Dimensional Tolerances | ISO h8, h9, h10, h11, k12, DIN 1013 / EN 10060 |
| Supply Conditions | Solution Annealed, Annealed, Cold Drawn, Centerless Ground, Hot Rolled, Forged |
Mechanical Properties & Chemical Composition
Equivalent Grades of B408 Incoloy 800/800H/800HT
| Standard | Werkstoff Nr. | UNS | JIS | EN |
|---|---|---|---|---|
| Incoloy 800 | 1.4876 | N08800 | NCF 800 | X10NiCrAlTi32-20 |
| Incoloy 800H | 1.4958 / 1.4876 | N08810 | NCF 800H | X5NiCrAlTi31-20 |
| Incoloy 800HT | 1.4859 / 1.4876 | N08811 | NCF 800HT | X8NiCrAlTi32-21 |
Chemical Composition of Incoloy 800/800H/800HT Bars
| Element | Incoloy 800 | Incoloy 800H | Incoloy 800HT |
|---|---|---|---|
| Carbon (C) | 0.10 max | 0.05 – 0.10 | 0.06 – 0.10 |
| Manganese (Mn) | 1.50 max | 1.50 max | 1.50 max |
| Silicon (Si) | 1.00 max | 1.00 max | 1.00 max |
| Sulfur (S) | 0.015 max | 0.015 max | 0.015 max |
| Copper (Cu) | 0.75 max | 0.75 max | 0.75 max |
| Iron (Fe) | 39.50 min | 39.50 min | 39.50 min |
| Nickel (Ni) | 30.00 – 35.00 | 30.00 – 35.00 | 30.00 – 35.00 |
| Chromium (Cr) | 19.00 – 23.00 | 19.00 – 23.00 | 19.00 – 23.00 |
| Aluminum (Al) | 0.15 – 0.60 | 0.15 – 0.60 | 0.25 – 0.60 |
| Titanium (Ti) | 0.15 – 0.60 | 0.15 – 0.60 | 0.25 – 0.60 |
Mechanical Properties of Incoloy 800/800H/800HT Round Bars
| Property | Metric Value | Imperial Value |
|---|---|---|
| Ultimate Tensile Strength | 520 MPa min | 75,000 psi min |
| Yield Strength (0.2% Offset) | 205 MPa min | 30,000 psi min |
| Elongation (%) | 30% min | 30% min |
| Density | 7.94 g/cm³ | 0.287 lb/in³ |
| Melting Point | 1385°C | 2525°F |
Types of Incoloy 800/800H/800HT Round Bars
Aurum Overseas supplies ASTM A276 Incoloy 800 Round Bars in precision bright and heavy forged conditions for high-temperature thermal processing and aggressive industrial atmospheres.
Incoloy 800 Bright Bars
Incoloy 800 Forged Bars
Key Advantages of UNS N08800 / N08810 / N08811 Round Bars
Optimum Creep & Rupture Strength
Controlled carbon levels (0.05–0.10%) combined with high-temperature solution annealing deliver high creep-rupture performance above 600°C.
Controlled Aluminum-Titanium Chemistry
800HT grades maintain a strict combined (Al + Ti) content of 0.85–1.20%, providing high long-term strength during continuous thermal exposure.
Resists Carburization & Oxidation
Balanced nickel (30–35%) and chromium (19–23%) content protect structural components from internal carburization in hydrocarbon processing.
Immune to Sigma Phase Embrittlement
Retains ductility and impact strength during prolonged exposure in the 600°C to 800°C critical temperature range without forming brittle phases.
Resists Chloride Stress Corrosion
High iron-nickel matrix provides superior resistance to stress corrosion cracking compared to standard 300-series stainless steels in hot aqueous media.
Key Applications of Incoloy 800/800H/800HT Round Bars
| Industry Sector | Typical Components | Operating Conditions |
|---|---|---|
| Petrochemical Refining | Ethylene pyrolysis tubing, pigtails, and header supports | Continuous high-stress thermal service above 800°C and hydrocarbon gases |
| Industrial Heating | Radiant tubes, furnace muffles, and heat-exchanger components | High thermal cycling, oxidizing combustion gas, and heavy structural loads |
| Power Generation | Superheater structural ties, reheater tubing hangers, and steam hardware | High-pressure steam environments, thermal shock, and high heat |
| Nuclear Engineering | Steam generator tubing components and high-temperature water piping | High-purity primary cooling water, pressure, and thermal exposure |
| Chemical Processing | Nitric acid production hardware, catalyst supports, and transfer lines | Hot organic and inorganic process vapors, oxidation, and heat |
-round-bar.webp "Incoloy 800 Bright and Forged Bars")
Quality Testing & Inspection
As a leading Incoloy 800/800H/800HT Round Bars Exporter, Aurum Overseas subjects every shipment to strict quality verification:
- Positive Material Identification (PMI): Spectrometer testing verifies exact element ratios, specifically checking Ni (30–35%), Cr (19–23%), and combined Al + Ti levels for 800HT grades.
- Ultrasonic Testing (UT): ASTM A388 testing checks heavy forged bars for internal voids, cracks, or flaws.
- Mechanical & Hardness Testing: Tensile strength, yield, elongation, and Rockwell/Brinell hardness verified per ASTM B408 standards.
- Dimensional & Surface Checks: Precision tools inspect straightness, roundness, outer diameter tolerances, and surface roughness (Ra).
Global Export Markets
As an established Incoloy 800/800H/800HT Round Bars Exporter, Aurum Overseas supplies fully certified UNS N08800 / N08810 / N08811 Round Bars to global energy and thermal engineering centers:
USA
Canada
Mexico
Germany
United
Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi
Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
Incoloy 800 (UNS N08800) serves general heat and corrosion service up to 600°C; 800H (UNS N08810) controls carbon (0.05–0.10%) for higher creep strength above 600°C; 800HT (UNS N08811) adds restricted Al + Ti (0.85–1.20%) for maximum creep-rupture performance.
ASTM A479 and ASTM A276 cover hot-rolled and cold-finished nickel alloy bars engineered for high-temperature boilers, pressure vessels, and furnace structural components.
Yes. All 800-series grades offer excellent weldability using matching filler metals (such as Inconel Filler Metal 82 or Welding Electrode 182) without requiring post-weld heat treatment.
We offer centerless ground and cold-drawn Incoloy 800 Bright Bars with ISO h9–h11 tolerances for precision CNC machining, alongside rough-turned and forged bar options.
All shipments include EN 10204 3.1 Mill Test Reports detailing heat numbers, chemical compositions, tensile/yield properties, PMI verification, and UT inspection results.
Contact Aurum Overseas
Aurum Overseas provides rapid delivery of certified Incoloy 800/800H/800HT Round Bars for high-specification global infrastructure projects.
Contact our technical sales team for engineering support, material test certificates, or direct RFQs: