Seamless Hastelloy C276 Tube is a high-performance, corrosion-resistant tube crafted from a single, solid billet of a nickel-molybdenum-chromium-tungsten superalloy. It is manufactured without a weld joint, ensuring superior structural integrity and reliability, especially under high-stress, high-temperature, and extremely corrosive conditions. The"Hastelloy C276"designation refers to a specific grade known for its outstanding resistance to a wide range of aggressive chemicals. This alloy is particularly noted for its ability to resist localized corrosion, such as pitting and crevice corrosion, and stress corrosion cracking. This makes it a top choice for applications in the most severe chemical processing and pollution control environments. ① STANDARD: ASTM B622 B619... ② OD RANGE : 6-257MM ③ THICKNESS RANGE: 1-35 MM
What Is a Seamless Hastelloy C276 Tube? | |
Seamless Hastelloy C276 tube is a high-performance, corrosion-resistant tube crafted from a single, solid billet of a nickel-molybdenum-chromium-tungsten superalloy. It is manufactured without a weld joint, ensuring superior structural integrity and reliability, especially under high-stress, high-temperature, and extremely corrosive conditions. The “Hastelloy C276"designation refers to a specific grade known for its outstanding resistance to a wide range of aggressive chemicals. This alloy is particularly noted for its ability to resist localized corrosion, such as pitting and crevice corrosion, and stress corrosion cracking. This makes it a top choice for applications in the most severe chemical processing and pollution control environments. | |
Key Features and Advantages | |
Seamless Hastelloy C276 tubes offer a unique combination of benefits that make them invaluable in the most demanding industries: | |
Universal Corrosion Resistance: Provides outstanding resistance to both oxidizing and reducing acids, as well as to a variety of corrosive media. | |
Exceptional Pitting and Crevice Corrosion Resistance: The high molybdenum content provides excellent resistance to localized corrosion in chloride-containing environments. | |
High Pressure and Temperature Tolerance: The seamless construction and robust material allow the tube to safely handle high internal pressures and extreme temperatures. | |
Superior Weldability: The alloy can be welded using standard methods without the risk of post-weld corrosion, a key advantage for complex fabrications. | |
Resistance to Stress-Corrosion Cracking: The high nickel content makes the alloy highly resistant to chloride-ion stress-corrosion cracking. | |
Product Specifications and Data | |
To provide a comprehensive overview of this high-performance material, here are the detailed technical specifications and performance data for Hastelloy C276. | |
Table 1: Chemical Composition of Hastelloy C276 | |
The composition of Hastelloy C276 is carefully balanced to achieve its superior corrosion resistance and high strength. | |
Element | Percentage (%) |
Nickel (Ni) | Balance |
Molybdenum (Mo) | 15.0 - 17.0 |
Chromium (Cr) | 14.5 - 16.5 |
Iron (Fe) | 4.0 - 7.0 |
Tungsten (W) | 3.0 - 4.5 |
Carbon (C) | ≤ 0.01 |
Vanadium (V) | ≤ 0.35 |
Manganese (Mn) | ≤ 1.0 |
Silicon (Si) | ≤ 0.08 |
Cobalt (Co) | ≤ 2.5 |
Table 2: Typical Mechanical Properties of Hastelloy C276 | |
Hastelloy C276 is specifically designed to maintain its strength and shape in high-stress, corrosive environments. | |
Property | Value (Annealed) |
Tensile Strength | ≥ 690 MPa |
Yield Strength | ≥ 283 MPa |
Elongation | ≥ 40% |
Hardness | ≤ 100 HRB |
Table 3: Typical Physical Properties of Hastelloy C276 | |
These physical properties highlight the material's ability to perform reliably under a wide range of conditions. | |
Property | Value |
Density | 8.89 g/cm³ |
Melting Point | 1371 °C approx. |
Thermal Expansion | 11.2 µm/m·°C (20-100°C) |
Thermal Conductivity | 10.2 W/m·K (20°C) |
Modulus of Elasticity | 205 GPa |
Common Applications | |
The combination of high corrosion resistance and high strength of seamless Hastelloy C276 tubes makes them a preferred choice for: | |
Chemical Processing: Used in reactors, heat exchangers, and piping for handling a wide range of aggressive chemicals. | |
Pollution Control: In scrubbers and stack liners for flue-gas desulfurization (FGD) systems. | |
Pharmaceuticals: In the production of pharmaceutical goods where high purity and corrosion resistance are critical. | |
Waste Treatment: In equipment for processing hazardous and corrosive waste. |
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