Alloy C276,Inconel C276 Tube,UNS N10276,E FORU

British Specs:，American Specs:AMS 5750 ASTM B462 ASTM B564 ASTM B574 ASTM B575 ASTM B622 ASTM B626 (Tube *) ASTM B619 ASTM B775，German Specs:WS 2.4819

### **Product Datasheet: Alloy C-276 / Inconel C-276 Tube (UNS N10276)** **Alloy C-276** (commercially known as **Inconel C-276**) tube is a nickel-molybdenum-chromium superalloy manufactured in tubular form, specifically designed for heat exchangers, condensers, and other precision applications requiring exceptional corrosion resistance in aggressive environments. This product form combines outstanding chemical resistance with excellent mechanical properties, making it ideal for critical heat transfer applications in chemical processing, power generation, and oil and gas industries. --- #### **1. Chemical Composition** The chemical composition of Alloy C-276 tube is precisely controlled to ensure optimal performance: | Element | Content (%) | |:---|:---| | **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 | | **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)** | 0.025 max | | **Sulfur (S)** | 0.01 max | *Note: The carefully balanced composition provides exceptional resistance to both oxidizing and reducing media, while the low carbon and silicon content ensures optimal corrosion resistance in welded structures and heat-affected zones.* --- #### **2. Physical Properties** Alloy C-276 tube exhibits consistent physical properties: | Property | Value | |:---|:---| | **Density** | 8.89 g/cm³ (0.321 lb/in³) | | **Melting Range** | 1325 - 1370°C (2420 - 2500°F) | | **Coefficient of Thermal Expansion** | 11.2 × 10⁻⁶/°C (20-100°C) | | **Thermal Conductivity** | 10.2 W/m·K (at 100°C) | | **Specific Heat** | 427 J/kg·K (at 100°C) | | **Modulus of Elasticity** | 205 GPa (29.7 × 10⁶ psi) | | **Electrical Resistivity** | 1.30 μΩ·m | | **Magnetic Permeability** | <1.001 (essentially non-magnetic) | --- #### **3. Mechanical Properties** **Standard Mechanical Properties (Annealed Condition):** | Property | Seamless Tube | Welded Tube | |:---|:---|:---| | **Tensile Strength** | 790 MPa (115 ksi) min | 760 MPa (110 ksi) min | | **Yield Strength (0.2% Offset)** | 415 MPa (60 ksi) min | 380 MPa (55 ksi) min | | **Elongation** | 55% min | 50% min | | **Hardness** | 90 HRB max | 90 HRB max | **Pressure Performance:** - **Maximum Working Pressure:** Varies with tube size and wall thickness - **Burst Pressure:** Typically 3-4 × working pressure - **Collapse Resistance:** Excellent under external pressure - **Temperature Range:** -196°C to 1090°C (-320°F to 2000°F) --- #### **4. Product Specifications** **Available Forms:** - **Seamless Tube:** OD 1/8" to 6" (3.2mm to 152.4mm) - **Welded Tube:** OD 1/8" to 4" (3.2mm to 101.6mm) - **Wall Thickness:** 0.5mm to 12mm (0.020" to 0.472") - **Lengths:** Standard up to 20 feet, custom lengths available **Tube Types & Sizes:** - **Heat Exchanger Tubes:** To ASTM/ASME specifications - **Condenser Tubes:** Various wall thicknesses and diameters - **Instrumentation Tubing:** Small diameters with precise tolerances - **Mechanical Tubing:** For structural and mechanical applications --- #### **5. Product Applications** **Heat Exchanger Applications:** - **Shell and Tube Heat Exchangers:** For corrosive service - **Condenser Tubes:** In chemical processing and power generation - **Feedwater Heaters:** For high-pressure steam systems - **Cooler Tubes:** Handling aggressive cooling media - **Reboiler Tubes:** In distillation column service **Chemical Processing:** - **Reactor Coils:** For temperature control in corrosive media - **Evaporator Tubes:** In concentration and crystallization processes - **Waste Heat Boilers:** Recovering energy from corrosive streams - **Quench Systems:** High-temperature cooling applications **Oil & Gas Industry:** - **Heat Exchanger Bundles:** In refinery and petrochemical service - **Surface Condensers:** For geothermal and oil production - **Process Coolers:** In gas processing plants - **Compressor Intercoolers:** For sour gas service **Power Generation:** - **Surface Condensers:** For fossil and nuclear power plants - **Feedwater Heaters:** High-pressure preheating stages - **Closed Cooling Water Systems:** For critical equipment cooling - **Geothermal Systems:** High-temperature brine handling **Pollution Control:** - **Flue Gas Coolers:** In air pollution control systems - **Scrubber Heat Exchangers:** For gas cleaning applications - **Waste Incineration:** Heat recovery from corrosive gases - **Water Treatment:** Corrosive fluid handling --- #### **6. International Standards** **Material & Manufacturing Standards:** - **UNS N10276**: Unified Numbering System designation - **ASTM B622**: Standard for Seamless Pipe and Tube - **ASTM B619**: Standard for Welded Pipe - **ASTM B626**: Standard for Welded Tube - **ASME SB622/SB619**: ASME Boiler and Pressure Vessel Code **Dimensional Standards:** - **ASTM B751**: General Requirements for Tubes - **ASME B36.19**: Stainless Steel and Nickel Alloy Tube - **TEMA Standards**: Tubular Exchanger Manufacturers Association **Testing & Inspection:** - **ASTM E213**: Ultrasonic Testing - **ASTM E309**: Eddy Current Testing - **ASTM E426**: Electromagnetic (Eddy Current) Testing - **Hydrostatic Testing**: Per applicable code requirements --- #### **7. Corrosion Resistance** **Excellent Performance In:** - **Hydrochloric Acid:** All concentrations and temperatures - **Sulfuric Acid:** Wide concentration range up to 70% - **Phosphoric Acid:** All concentrations and temperatures - **Chloride Solutions:** Superior pitting and crevice corrosion resistance - **Wet Chlorine Gas:** Outstanding performance - **Organic Acids:** Formic, acetic, and other organic acids **Corrosion Performance Data:** - **Critical Pitting Temperature:** >85°C - **Critical Crevice Temperature:** >65°C - **Pitting Resistance Equivalent Number (PREN):** ~69 - **General Corrosion Rate:** <0.1 mm/year in most chemical environments --- #### **8. Fabrication & Installation** **Tube Expansion:** - **Maximum Expansion:** 8% of tube wall thickness per pass - **Lubrication:** Recommended for heavy wall tubes - **Sequencing:** Proper expansion pattern to minimize stress **Tube Bending:** - **Minimum Bend Radius:** 2 × OD for thin wall tubes - **Bending Methods:** Mandrel, compression, or roll bending - **Annealing Condition:** Preferred for tight radius bends **Welding & Joining:** - **Tube-to-Tubesheet Welding:** GTAW process recommended - **Filler Metal:** ERNiCrMo-4 - **Welding Positions:** All positions achievable - **Quality Requirements:** Typically 100% radiographic examination --- #### **9. Technical Advantages** * **Superior Heat Transfer:** Excellent thermal conductivity for efficient heat exchange * **Exceptional Corrosion Resistance:** Outstanding performance in aggressive environments * **Mechanical Strength:** High strength-to-weight ratio * **Excellent Fabricability:** Suitable for various manufacturing processes * **Long Service Life:** Reduced maintenance and replacement frequency * **Temperature Resistance:** Maintains properties from cryogenic to high temperatures * **Industry Compliance:** Meets major international standards --- #### **10. Quality Assurance** **Certification & Documentation:** - **Mill Test Certificates:** EN 10204 3.1/3.2 - **Chemical Analysis:** Full traceability with heat number - **Mechanical Testing:** Tensile, hardness, flattening, flaring - **Non-Destructive Testing:** UT, ET, RT, PT as specified - **Surface Inspection:** Visual and dimensional checks **Quality Control Processes:** - **Raw Material Control:** Verified chemical composition - **Process Control:** Monitored manufacturing parameters - **Final Inspection:** Comprehensive quality verification - **Traceability:** Complete documentation from melt to final product Alloy C-276 tube offers exceptional performance for critical heat transfer applications in corrosive environments, providing reliable service in chemical processing, oil & gas, power generation, and pollution control industries where both corrosion resistance and thermal performance are essential requirements.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2018 gallon liquid totes Special package is available on request.