Versatile Nickel Alloy Hastelloy C276 Bars: Perfect for Corrosive & High-Temperature Environments
The Hastelloy C276 Bar is a premium alloy renowned for its outstanding resistance to a broad spectrum of corrosive environments. Composed of a nickel-molybdenum-chromium matrix with added tungsten, this superalloy is engineered to endure extreme conditions, including exposure to strong oxidizing and reducing acids, as well as pitting, crevice corrosion, and stress corrosion cracking. Its unique blend of elements makes Hastelloy C276 one of the most adaptable and corrosion-resistant materials on the market. This alloy is extensively used in industries such as chemical processing, pollution control, oil and gas, and marine applications, where superior corrosion resistance is critical.
Why Hastelloy C276 Bar Is Suitable For Extreme Conditions?
Hastelloy C276 Bar is highly suitable for extreme conditions due to its exceptional material properties and unique composition. Here are the key reasons why it performs so well in harsh environments:
Outstanding Corrosion Resistance: Hastelloy C276 exhibits excellent resistance to a wide variety of corrosive media, including strong oxidizing and reducing acids like sulfuric, hydrochloric, and nitric acids. Its resistance to pitting, crevice corrosion, and stress corrosion cracking makes it ideal for environments where other alloys would fail.
High-Temperature Stability: This alloy maintains its mechanical properties and corrosion resistance even at elevated temperatures. It can withstand temperatures up to 1,900°F (1,038°C), making it suitable for high-temperature applications in industries such as chemical processing and power generation.
Robust Mechanical Properties: Hastelloy C276 has high strength and toughness, which allows it to perform under significant stress and pressure without losing its integrity. This makes it an excellent choice for critical applications where reliability is paramount.
Resistance to Oxidizing and Reducing Conditions: The alloy’s unique combination of nickel, molybdenum, chromium, and tungsten gives it the ability to resist damage in both oxidizing and reducing environments, which are common in many industrial processes.
Versatility in Severe Environments: Its resilience against localized corrosion (such as pitting and crevice corrosion) in chloride-containing environments further extends its suitability to marine applications and other chloride-rich settings.
Ease of Fabrication: Despite its robustness, Hastelloy C276 can be readily fabricated into various forms, including bars, sheets, and pipes, through conventional methods such as welding and forming. This versatility in fabrication enables it to be tailored to specific needs in challenging conditions.
These characteristics make Hastelloy C276 Bar an ideal material for use in extreme environments across various industries, including chemical processing, pollution control, oil and gas, and marine applications, where maximum corrosion resistance and durability are essential.
What Is The Main Applications of Hastelloy C276 Bar?
Hastelloy C276 is a nickel-molybdenum-chromium alloy known for its excellent corrosion resistance in a wide range of severe environments. The C276 bar form of this alloy is commonly used in various applications due to its high strength, versatility, and resistance to oxidation and pitting. Here are the main applications of Hastelloy C276 bars:
1. Chemical Processing Industry:
Used in equipment like reactors, heat exchangers, columns, and tanks, where highly corrosive chemicals such as sulfuric acid, hydrochloric acid, and chlorine compounds are processed.
Ideal for use in acidic environments and where exposure to harsh chemicals is frequent.
2. Oil and Gas Industry:
Utilized in downhole and surface components such as valves, pumps, and pipelines.
Suitable for sour gas environments, high-pressure conditions, and exposure to corrosive fluids and gases.
3. Marine Applications:
Used in seawater systems, such as pumps, valves, and other equipment that operate in highly corrosive marine environments.
Excellent resistance to seawater and brine, making it ideal for offshore platforms and naval applications.
4. Pollution Control:
Applied in flue gas desulfurization systems, where it withstands acidic gases, high temperatures, and abrasive environments.
Used in scrubbers, ducts, and stack liners that require materials resistant to severe corrosion.
5. Power Generation:
Employed in geothermal, nuclear, and coal-fired power plants.
Used for components exposed to high temperatures and corrosive environments, such as heat exchangers, superheater tubes, and reheater tubes.
6. Pulp and Paper Industry:
Utilized in digesters, bleaching vessels, and other equipment exposed to acidic and chloride-containing environments.
Offers resistance to corrosive bleaching chemicals used in paper production.
7. Pharmaceutical Industry:
Used in equipment that requires high levels of cleanliness and corrosion resistance, such as reactors, mixers, and piping systems.
Ideal for applications involving the processing of aggressive pharmaceutical intermediates.
8. Aerospace Industry:
Employed in components that need high strength and corrosion resistance at elevated temperatures.
Suitable for use in harsh environments encountered in aircraft engines and other aerospace systems.
9. Waste Treatment:
Used in components that handle or process waste containing corrosive chemicals.
Ideal for incinerators, waste storage tanks, and related equipment.
Hastelloy C276 bars are chosen for these applications due to their superior resistance to localized corrosion, stress corrosion cracking, and their ability to maintain mechanical integrity in extreme conditions.
| Element | Composition (Weight %) | Remarks |
|---|---|---|
| Nickel (Ni) | 57.0 min | Base metal, primary element providing corrosion resistance. |
| Chromium (Cr) | 14.5 - 16.5 | Enhances oxidation and corrosion resistance. |
| Molybdenum (Mo) | 15.0 - 17.0 | Increases strength, hardness, and resistance to pitting. |
| Iron (Fe) | 4.0 - 7.0 | Minor element, balances alloy and improves workability. |
| Tungsten (W) | 3.0 - 4.5 | Adds to corrosion resistance and enhances the alloy's high-temperature strength. |
| Cobalt (Co) | 2.5 max | Present as a minor impurity, not intentionally added. |
| Manganese (Mn) | 1.0 max | Minor element, can impact the alloy's hardness and strength. |
| Vanadium (V) | 0.35 max | Improves strength, though present in small quantities. |
| Silicon (Si) | 0.08 max | Minor element, should be kept low to maintain weldability. |
| Carbon (C) | 0.01 max | Low carbon content to prevent carbide precipitation and enhance weldability. |
| Phosphorus (P) | 0.04 max | Trace element, should be minimized as it can affect mechanical properties. |
| Sulfur (S) | 0.03 max | Impurity that should be minimized to avoid compromising corrosion resistance. |
Physical and Mechanical Properties Of Hastelloy C276
| Parameter | Value | Remarks |
|---|---|---|
| Density | 8.89 g/cm³ | High density due to the heavy alloying elements. |
| Melting Point | 1325-1370°C | High melting point for high-temperature applications. |
| Tensile Strength | 690 MPa (min) | Indicates the maximum stress the material can withstand while being stretched or pulled. |
| Yield Strength | 283 MPa (min) | Stress at which the material begins to deform plastically. |
| Elongation | 40% | Measures ductility; higher values indicate better ductility. |
| Hardness (Rockwell B) | 85 (max) | Moderate hardness, suitable for various industrial applications. |
| Modulus of Elasticity | 205 GPa | Measures stiffness; a high modulus indicates a rigid material. |
| Thermal Conductivity | 10.2 W/m·K | Lower thermal conductivity typical of high-performance alloys. |
| Electrical Resistivity | 1.28 µΩ·m | High resistivity, typical of alloys with nickel and chromium. |
Company Profile：
DLX Alloy is a company dedicated to the production and research and development of alloys. Founded in 2002, we initially focused on the production of resistance alloys. Over the past 20 years, we have continued to conduct research and development and now offer a range of alloy products, including Inconel, Monel, Hastelloy, high-temperature alloys, and other nickel-based alloys. Our commitment to meeting the needs of industries that require high strength, strong corrosion resistance, and high-temperature performance is reflected in our focus on developing these alloys.
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