ASTM B366 Incoloy 800, 800H & 800HT Buttweld Fittings Supplier & Stockist
Inconel 800/800H/800HT pipe fittings are specialized in high-temperature application and known for their excellent resistance against oxidation, carburization and corrosion resistance for rigorous industrial service, such as the petrochemical industries, heat treating operations, power generation, chemical processes, and refinery operations that are subject to both elevated temperature and high pressure. ASTM B366 standard is for butt-welding pipe fittings fabricated from Incoloy 800, 800H and 800HT alloys which consists of elbows, tees, reducers, caps and stub ends.
ASTM B366 Inconel 800 Fittings Supplier for High-Temperature Applications
In a hot and hostile environment where your industry is operating, sourcing piping material with the correct specification to withstand long-term wear and tear is crucial. We stock top-quality ASTM B366 Inconel 800 fittings. We are a recognized stockist that supplies products according to international quality standards and engineered to stand out in high-risk services.
These high-quality nickel-alloy based fittings boast mechanical strengths, with high resistance to oxidation and metallurgical stability at higher temperatures. Our seamlessly and welded options are perfect for the following industrial applications: – oil and gas; petrochemical; power; fertilizers; heat exchangers and; process industries. We offer an extensive range of Inconel ASTM B366 800H fittings, as one of the leading manufacturers, we can supply both standard and custom made fitting as per project specifications to the market.
What are ASTM B366 Inconel 800, 800H & 800HT Fittings?
ASTM B366 – Specification for Factory-Made Wrought Nickel Alloy Buttwelding Fittings This standard covers factory-made wrought nickel alloy buttwelding fittings produced from: Incoloy 800 Incoloy 800H Incoloy 800HT. These nickel-iron-chromium alloys were created to resist high-temperature creep and maintain their structural integrity.
Incoloy 800
Designed for general high-temperature applications with outstanding oxidation and carburization resistance.
Incoloy 800H
A modified version of Alloy 800 with controlled carbon content that enhances creep and rupture strength at elevated temperatures.
Incoloy 800HT
Further optimized with controlled carbon, aluminum, and titanium levels to provide superior long-term strength and resistance in high-temperature environments
ASTM B366 Incoloy 800® Buttweld Fittings Types
We supply a complete range of ASTM B366 Incoloy 800® Buttweld Fittings manufactured according to ASME B16.9, MSS SP-43, MSS SP-75, and customer specifications.
Available Products
- 45° Elbows
- 90° Long Radius Elbows
- 180° Return Bends
- Equal Tees
- Reducing Tees
- Concentric Reducers
- Eccentric Reducers
- Stub Ends
- End Caps
- Crosses
- Pipe Nipples
- Custom Fabricated Fittings
Our inventory includes Incoloy 800 Butt weld Fittings in various wall thicknesses, schedules, and dimensions suitable for demanding industrial systems.
Properties of ASTM B366 800/800H/800HT Inconel Fittings
ASTM B366 800/800H/800HT Inconel fittings properties make them stand out as one of the most reliable materials for high-performance applications. Here are the key properties:
- High-Temperature Resistance: Inconel 800, 800H, and 800HT have excellent resistance to high temperatures, withstanding temperatures up to 1093°C (2000°F). The “H” and “HT” versions have added carbon content and grain size to improve creep and rupture strength at high temperatures.
- Oxidation and Corrosion Resistance: Inconel fittings resist oxidation and corrosion, even in aggressive environments with exposure to acids, alkalis, and high-temperature oxidation.
- Stress Rupture Strength: Inconel 800H and 800HT fittings exhibit superior stress rupture strength, making them suitable for environments where materials are subjected to prolonged exposure to high temperatures and stress.
- Excellent Mechanical Properties: These fittings retain their mechanical strength at both elevated and sub-zero temperatures, making them suitable for a wide range of industrial applications.
- Thermal Stability: Inconel 800, 800H, and 800HT maintain thermal stability, minimizing risks of thermal fatigue or failure due to repeated thermal cycling.
Incoloy DIN 1.4876 Buttweld Fitting Stockist
DIN 1.4876 DIN standards that have been equivalent to Incoloy 800 are found in Germany. Our company is an experienced Incoloy DIN 1.4876 Buttweld Fitting Stockholder, where we hold and provide fittings in any standard, or in a dimension that may be particular to your project.
Our stock program includes:
- DIN 1.4876 Elbows
- DIN 1.4876 Tees
- DIN 1.4876 Reducers
- DIN 1.4876 Stub Ends
- DIN 1.4876 Pipe Caps
Incoloy 800H Seamless Buttweld Fittings Distributor
For applications requiring enhanced creep strength and high-temperature stability, we offer a broad range of Incoloy 800H Seamless Buttweld Fittings distributor solutions.
Seamless fittings provide:
- Higher structural integrity
- Uniform wall thickness
- Improved pressure handling capability
- Better performance in critical process systems
- Reduced risk of weld-related defects
These fittings are widely used in steam reformers, cracking units, heat treatment plants, and high-temperature chemical processing facilities.
Inconel 800HT Butt Weld Fittings for Extreme Service Conditions
Our Inconel 800HT butt weld fittings are designed for applications where superior creep rupture strength is critical.
Common uses include:
- Ethylene Furnace Systems
- Ammonia Plants
- Hydrocarbon Processing Units
- Nuclear Power Facilities
- Industrial Furnaces
- Waste Heat Recovery Systems
The controlled chemistry of Alloy 800HT provides exceptional metallurgical stability during prolonged exposure to elevated temperatures.
Schedule and Size Chart
| NPS (Nominal Pipe Size) | Fitting OD (mm) | Schedule 10S (mm) | Schedule 40S (mm) | Schedule 80S (mm) | Schedule 160 (mm) |
| 1/2″ | 21.3 | 1.65 | 2.77 | 3.73 | 4.78 |
| 3/4″ | 26.7 | 1.65 | 2.87 | 3.91 | 5.56 |
| 1″ | 33.4 | 1.65 | 3.38 | 4.55 | 6.35 |
| 1-1/2″ | 48.3 | 2.11 | 3.68 | 5.08 | 7.14 |
| 2″ | 60.3 | 2.77 | 3.91 | 5.54 | 8.74 |
| 4″ | 114.3 | 3.56 | 6.02 | 8.56 | 13.49 |
| 6″ | 168.3 | 4.19 | 7.11 | 10.97 | 15.09 |
| 8″ | 219.1 | 4.78 | 8.18 | 12.7 | 23.01 |
Mechanical Properties Chart
| Property | Inconel 800 | Inconel 800H | Inconel 800HT |
| Tensile Strength (MPa) | 520 | 450 | 450 |
| Yield Strength (0.2% offset) | 205 MPa | 170 MPa | 170 MPa |
| Elongation (%) | 30 | 35 | 35 |
| Hardness (Rockwell B) | 80 | 75 | 75 |
| Density (g/cm³) | 7.94 | 7.94 | 7.94 |
Specifications Chart
| Specification | Detail |
| Standard | ASTM B366 |
| Material Grade | Inconel 800, 800H, 800HT |
| Fittings Type | Elbows, Tees, Reducers, Caps, Crosses, Stub Ends, Couplings |
| Dimensions | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Size Range | 1/2″ to 24″ |
| Schedule | SCH 10 to SCH 160, XXS |
| Pressure Class | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Form | Seamless, Welded |
| Ends | Beveled Ends, Plain Ends, Threaded Ends |
Chemical Composition Chart
| Element | Inconel 800 (%) | Inconel 800H (%) | Inconel 800HT (%) |
| Nickel (Ni) | 30-35 | 30-35 | 30-35 |
| Chromium (Cr) | 19-23 | 19-23 | 19-23 |
| Iron (Fe) | 39.5 minimum | 39.5 minimum | 39.5 minimum |
| Carbon (C) | 0.10 max | 0.05-0.10 | 0.06-0.10 |
| Manganese (Mn) | 1.5 max | 1.5 max | 1.5 max |
| Silicon (Si) | 1.0 max | 1.0 max | 1.0 max |
| Aluminum (Al) | 0.15-0.60 | 0.15-0.60 | 0.15-0.60 |
| Titanium (Ti) | 0.15-0.60 | 0.15-0.60 | 0.15-0.60 |
Physical Properties Chart
| Property | Inconel 800/800H/800HT |
| Density | 7.94 g/cm³ |
| Melting Point | 1357 – 1385 °C |
| Thermal Conductivity | 11.3 W/m·K at 100°C |
| Electrical Resistivity | 0.98 µΩ·m at 20°C |
| Specific Heat Capacity | 460 J/kg·K |
| Modulus of Elasticity | 196 GPa |
| Thermal Expansion Coefficient | 14.4 µm/m·°C at 20-1000°C |
Applications of ASTM B366 Inconel 800, 800H & 800HT Fittings
These fittings are widely used across industries that demand high-temperature corrosion resistance and long-term durability.
Industries Served
- Oil & Gas Processing
- Petrochemical Plants
- Refineries
- Power Generation Facilities
- Heat Treatment Equipment
- Chemical Processing Industries
- Fertilizer Plants
- Pulp & Paper Industry
- Offshore Platforms
- Nuclear Facilities
- Desalination Plants
Other Inconel Fitting Grades
Why Choose Our ASTM B366 Inconel 800, 800H & 800HT Fittings?
Choosing the right supplier is just as important as selecting the right alloy.
Our Advantages
- Extensive stock availability
- Global export capability
- Competitive pricing
- Fast delivery schedules
- International quality compliance
- Custom manufacturing support
- Full material traceability
- Technical assistance from alloy specialists
Whether your project requires standard elbows and tees or specialized engineered fittings, we provide reliable solutions that meet stringent industrial requirements.
Global Reach
ASC LLP boasts a robust global presence and is committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality ASTM B366 Inconel 800/800H/800HT Fittings. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.
Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.
