ASTM B366 Inconel 800/800H/800HT Fittings

ASTM B366 Inconel 800/800H/800HT Fittings are high-performance alloy fittings designed for applications that require exceptional resistance to heat, corrosion, and stress in extreme environments. Inconel alloys are known for their remarkable ability to withstand high temperatures and maintain structural integrity, making them an excellent choice for industries such as chemical processing, power generation, and petrochemical industries. These fittings are manufactured following ASTM B366 specifications, which set the standards for the material properties, mechanical strength, and overall quality of Inconel fittings.

If you’re looking for reliable and durable 800/800H/800HT Inconel fittings, then ASC LLP is a leading exporter and supplier of these fittings, providing top-notch products that meet the highest industry standards.

What is ASTM B366 Inconel 800/800H/800HT Fittings?

ASTM B366 Inconel 800/800H/800HT Fittings are specialized components made from Inconel alloy 800, 800H, and 800HT. Inconel is a nickel-iron-chromium alloy with excellent resistance to oxidation, carburization, and sulfidation at elevated temperatures. The “H” and “HT” grades are modifications of the standard Inconel 800 alloy, offering enhanced strength and performance under high-temperature conditions. These fittings are essential for piping systems that require superior mechanical and thermal properties.

The ASTM B366 standard covers a wide range of seamless and welded fittings, including elbows, tees, reducers, caps, and other types used in piping systems. The Inconel ASTM B366 fittings are designed to withstand both high-pressure and high-temperature environments, ensuring long-lasting performance and reliability.

ASTM B366 Inconel 800/800H/800HT Fittings

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.

Advantages of ASTM B366 800/800H/800HT Inconel Fittings

The ASTM B366 800/800H/800HT Inconel fittings advantages are numerous, providing essential benefits for critical industrial applications. Some of the key advantages include:

  • Longevity: Inconel 800/800H/800HT fittings are known for their longevity and durability, reducing the need for frequent replacements.
  • Versatility: These fittings are highly versatile and can be used in various applications across different industries, including petrochemical, nuclear power, and aerospace industries.
  • Reduced Maintenance: Due to their corrosion and oxidation resistance, ASTM B366 800/800H/800HT Inconel fittings require less maintenance and provide long-term reliability in demanding environments.
  • Improved Safety: The high thermal stability and mechanical strength ensure that the piping system remains safe and functional, even in high-temperature environments, reducing the risk of failure.
  • Cost Efficiency: Despite being a premium material, the durability and low maintenance requirements of Inconel fittings result in long-term cost savings for industrial applications.
Inconel 800/800H/800HT Fittings
ASTM B366 800HT Fittings

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

Application Chart

Industry Applications
Petrochemical Industry Heat exchangers, catalytic reactors, and piping systems in refineries and gas plants
Chemical Processing Reactors, distillation columns, and process piping in chemical plants
Power Generation Steam and gas turbines, superheaters, boilers, and heat exchangers
Nuclear Industry Reactor core components, piping in high-temperature environments
Aerospace Industry Jet engines, gas turbines, and exhaust systems
Oil & Gas Offshore drilling rigs, oil refineries, and natural gas processing plants
Heat Treatment Furnace components, thermal processing equipment, and heat treatment plants
Pharmaceutical Industry High-temperature, high-pressure piping systems used in chemical reactions

B366 Inconel Fittings Exporters and Suppliers

As leading B366 Inconel fittings exporters and suppliers, ASC LLP offers a comprehensive range of Inconel 800, 800H, and 800HT fittings to meet the specific needs of our global clientele. Our products are manufactured to the highest standards, ensuring that each fitting delivers outstanding performance in demanding environments.

At ASC LLP, we focus on providing superior quality, timely delivery, and competitive pricing. Our extensive inventory ensures that we can meet urgent requirements while providing custom solutions for unique applications. Whether you need fittings for chemical processing, power generation, or any other industry, we are your trusted supplier.

Global Reach

Amardeep Steel Centre 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.

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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.

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