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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