ASTM B366 Hastelloy C276 Fittings – Ultimate Corrosion Resistance and Durability
When selecting industrial fittings that can withstand extreme environments, ASTM B366 Hastelloy C276 Fittings are a preferred choice for industries such as chemical processing, power generation, and marine engineering. Known for their outstanding resistance to corrosion and their ability to perform under harsh conditions, these fittings are an essential component in systems where longevity and reliability are critical.
This article explores everything you need to know about ASTM B366 Hastelloy C276 Fittings, including their properties, advantages, and the applications where they excel.
What is ASTM B366 Hastelloy C276 Fittings?
ASTM B366 refers to a specification by the American Society for Testing and Materials (ASTM), which governs the standard for wrought nickel and nickel alloy fittings, such as elbows, reducers, tees, and caps. When it comes to C276 Hastelloy fittings, these components are made from a superalloy known for its high nickel, molybdenum, and chromium content. This unique composition provides superior resistance to various forms of corrosion, especially in environments that are highly corrosive or contain aggressive chemicals.
Hastelloy C276 fittings are widely used in industries dealing with extremely corrosive substances. These fittings are ideal for harsh chemical conditions where standard stainless steel or other alloys may degrade quickly.
ASTM B366 C276 Hastelloy Fittings Properties
ASTM B366 C276 Hastelloy fittings offer a range of properties that make them stand out in industrial applications. Some key properties include:
- Exceptional Corrosion Resistance: C276 Hastelloy is resistant to general corrosion, stress corrosion cracking, pitting, and crevice corrosion. It offers resistance in both oxidizing and reducing environments, making it versatile for various industries.
- Resistance to Acidic Environments: The high nickel and molybdenum content in C276 Hastelloy fittings allows them to withstand strong acids like sulfuric acid, hydrochloric acid, and nitric acid, making them ideal for chemical plants and processing industries.
- High-Temperature Tolerance: Hastelloy C276 retains its strength and corrosion resistance even at elevated temperatures, which is crucial for operations involving high-temperature processes, such as furnaces or power plants.
- Non-Magnetic Properties: These fittings are non-magnetic, making them suitable for specialized applications where magnetism could interfere with operations.
- Enhanced Mechanical Strength: Despite their exceptional corrosion resistance, C276 Hastelloy fittings maintain high mechanical strength and are highly durable, which reduces maintenance and replacement costs.
- Resistance to Localized Corrosion: These fittings are particularly resistant to localized forms of corrosion such as pitting and crevice corrosion, common issues in aggressive media environments.
- Weldability: C276 Hastelloy is easy to weld and fabricate without risking the degradation of its properties, which ensures a long service life.
Advantages of ASTM B366 C276 Hastelloy Fittings
Choosing ASTM B366 Hastelloy C276 fittings comes with numerous advantages for industries where corrosion and chemical resistance are critical. Some notable benefits include:
- Superior Corrosion Resistance: These fittings are designed to withstand the harshest corrosive environments. Whether exposed to highly acidic, alkaline, or chlorinated conditions, C276 Hastelloy fittings can provide unparalleled protection.
- Longevity and Durability: The strength and corrosion resistance of Hastelloy ASTM B366 fittings ensure a longer life cycle, reducing the frequency of replacements and repairs, and ultimately saving on costs.
- Versatile Applications: These fittings are used in a wide range of industries, from chemical processing to pollution control, making them highly adaptable for different systems.
- Minimizing Downtime: With their superior resistance to wear and tear, B366 Hastelloy fittings help reduce system downtime due to maintenance, providing smoother operations and higher productivity.
- Enhanced Performance in Extreme Conditions: The ability to operate in both extremely high and low temperatures without compromising their integrity makes these fittings ideal for a range of industrial environments.
- Reliable for Critical Applications: ASTM B366 C276 Hastelloy fittings provide safety and reliability in systems where a failure could lead to catastrophic consequences, such as in nuclear reactors or oil refineries.
- Compliance with Industry Standards: These fittings meet stringent ASTM B366 specifications, ensuring they meet global standards for safety and quality in critical applications.
Schedule and Size Chart
| Schedule | Nominal Pipe Size (NPS) | Outside Diameter (OD) | Wall Thickness |
| SCH 10 | ½” to 24” | 0.840” to 24.00” | 0.083” to 0.500” |
| SCH 20 | ½” to 24” | 0.840” to 24.00” | 0.109” to 0.531” |
| SCH 40 | ½” to 24” | 0.840” to 24.00” | 0.147” to 0.688” |
| SCH 80 | ½” to 24” | 0.840” to 24.00” | 0.188” to 0.875” |
| SCH 160 | ½” to 24” | 0.840” to 24.00” | 0.294” to 1.406” |
| XXS | ½” to 24” | 0.840” to 24.00” | 0.308” to 2.000” |
Mechanical Properties Chart
| Property | Value | Unit |
| Tensile Strength | 100 ksi (690 MPa) | ksi / MPa |
| Yield Strength (0.2% offset) | 42 ksi (290 MPa) | ksi / MPa |
| Elongation at Break | 40% | % |
| Hardness (Rockwell B) | 95 | HRB |
Specifications Chart
| Standard | Details |
| Material Specification | ASTM B366 |
| Grade | Hastelloy C276 |
| Product Type | Wrought Nickel Alloy Fittings |
| Fitting Types | Elbows, Tees, Reducers, Caps, Crosses |
| Form | Seamless, Welded, Fabricated |
| Size Range | ½” to 24” |
| Schedule | SCH 10 to XXS |
| Manufacturing Process | Hot or Cold Working, Annealed |
| Standards | ASME B16.9, B16.11 (Fittings), B16.28 |
Chemical Composition Chart
| Element | Composition (%) |
| Nickel (Ni) | 57.0 min |
| Molybdenum (Mo) | 15.0 – 17.0 |
| Chromium (Cr) | 14.5 – 16.5 |
| Iron (Fe) | 4.0 – 7.0 |
| Tungsten (W) | 3.0 – 4.5 |
| Cobalt (Co) | 2.5 max |
| Manganese (Mn) | 1.0 max |
| Vanadium (V) | 0.35 max |
| Silicon (Si) | 0.08 max |
| Carbon (C) | 0.01 max |
| Phosphorus (P) | 0.04 max |
| Sulfur (S) | 0.03 max |
Physical Properties Chart
| Property | Value |
| Density | 8.89 g/cm³ |
| Melting Point | 1370 – 1400°C (2500 – 2550°F) |
| Electrical Resistivity | 1.26 x 10^(-6) Ω·m |
| Thermal Conductivity | 10.2 W/m·K at 20°C |
| Specific Heat | 427 J/kg·K at 20°C |
| Modulus of Elasticity | 205 GPa (29.7 x 10^3 ksi) |
| Coefficient of Expansion | 11.2 µm/m·K (25-100°C) |
Application Chart
| Industry | Application |
| Chemical Processing | Used in systems handling corrosive chemicals like acids and chlorides, including reactors, heat exchangers, and piping systems. |
| Oil & Gas Industry | Employed in sour gas services, offshore platforms, and oil refineries where the environment is highly corrosive. |
| Power Generation | Utilized in nuclear power plants and gas turbines due to their high corrosion resistance and ability to handle elevated temperatures. |
| Marine Engineering | Ideal for seawater applications, including shipbuilding, desalination plants, and marine platforms. |
| Pharmaceutical | Required in drug manufacturing plants where contamination must be minimized and purity preserved. |
| Pollution Control | Used in flue gas desulfurization systems, and scrubbers that deal with hazardous and corrosive gases. |
| Pulp and Paper Industry | Deployed in bleaching plants where fittings are exposed to chemicals and corrosion risks. |
Why Choose ASC LLP for ASTM B366 Hastelloy C276 Fittings?
At ASC LLP, we have established ourselves as a trusted name in the supply of Hastelloy ASTM B366 fittings. Here’s why industries across the globe choose us:
- High-Quality Materials: We source our materials from reliable and certified mills to ensure the highest standards of quality in our fittings.
- Global Supply Chain: We have a well-established global network of suppliers and distributors, ensuring timely deliveries, no matter where your project is located.
- Custom Solutions: Our team of experts can work with you to create custom fittings that meet your unique project requirements.
- Competitive Pricing: We offer competitive pricing without compromising on the quality and reliability of our products.
- Technical Expertise: With years of experience in the industry, we have the expertise to provide technical support and recommendations to ensure the right fittings are chosen for your applications.
ASTM B366 Hastelloy C276 fittings are an indispensable part of industries that require the highest level of corrosion resistance and durability. With their excellent mechanical properties, corrosion resistance in both reducing and oxidizing environments and the ability to withstand extreme conditions, C276 Hastelloy fittings are a smart investment for long-term performance.
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 Hastelloy C276 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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