Alloy G-3,INCO G-3 Tube,,E FORU

British Specs:，American Specs:，German Specs:

**Product Data Sheet: Alloy G-3 / INCO G-3 Tube** **Nickel-Chromium-Iron-Molybdenum Alloy Tube** --- ### **1. Product Overview** **Alloy G-3 Tube** (commonly known as **INCO G-3 Tube**) is a nickel-chromium-iron-molybdenum alloy tubing product specifically designed for handling highly corrosive media in extreme industrial environments. Available in both seamless and welded configurations, these tubes offer exceptional resistance to sulfuric acid, phosphoric acid, and other aggressive chemicals, making them ideal for heat exchangers, condensers, and process tubing applications where reliability in corrosive service is paramount. --- ### **2. Chemical Composition (Typical % by Weight)** | Element | Content (%) | Function | |---------|-------------|----------| | Nickel (Ni) | Balance | Base element providing corrosion resistance and metallurgical stability | | Chromium (Cr) | 21.0-23.5 | Confers resistance to oxidizing media and pitting corrosion | | Iron (Fe) | 18.0-21.0 | Provides solid solution strengthening | | Molybdenum (Mo) | 6.0-8.0 | Enhances resistance to reducing acids and localized corrosion | | Copper (Cu) | 1.5-2.5 | Improves resistance to sulfuric acid environments | | Tungsten (W) | ≤1.5 | Augments localized corrosion resistance | | Cobalt (Co) | ≤5.0 | Controls carbon activity and enhances thermal stability | | Carbon (C) | ≤0.015 | Minimized to prevent sensitization during welding | | Manganese (Mn) | ≤1.0 | Serves as deoxidizer and controls sulfur | | Silicon (Si) | ≤1.0 | Enhances oxidation resistance | | Phosphorus (P) | ≤0.04 | Controlled to ensure optimal weldability | | Sulfur (S) | ≤0.03 | Minimized to prevent hot cracking | --- ### **3. Physical & Mechanical Properties** | Property | Value (Typical) | |----------|-----------------| | Density | 8.3 g/cm³ | | Melting Point | 1370°C (2500°F) | | Thermal Conductivity | 10.1 W/m·K at 20°C | | Coefficient of Thermal Expansion | 13.7 μm/m·K (20-100°C) | | Specific Heat Capacity | 450 J/kg·K at 20°C | | Modulus of Elasticity | 205 GPa at 20°C | | Tensile Strength | 690-840 MPa | | Yield Strength (0.2% Offset) | 310-410 MPa | | Elongation | 40-50% | | Hardness (Rockwell B) | 85-95 HRB | | Maximum Service Temperature | 400°C (750°F) | --- ### **4. Product Applications** #### **4.1 Heat Exchanger Applications** - **Shell and Tube Heat Exchangers**: Tubes for corrosive service on both shell and tube sides - **Condensers**: Surface condensers handling corrosive vapors and cooling media - **Coolers**: Process coolers and intercoolers in chemical plants - **Evaporators**: Heating tubes in forced circulation and falling film evaporators #### **4.2 Chemical Processing Industry** - **Reactor Coils**: Heating and cooling coils in chemical reactors - **Transfer Lines**: Corrosive fluid transfer and sampling lines - **Analytical Instrumentation**: Tubing for corrosive process analytical systems - **Chemical Injection Lines**: Metering and injection tubing for aggressive chemicals #### **4.3 Oil & Gas Applications** - **Heat Exchanger Tubes**: In refinery heat exchangers and coolers - **Production Tubing**: For corrosive downhole and surface production applications - **Instrumentation Tubing**: Pressure sensing and control lines in corrosive service - **Gas Processing**: Tubing in amine contactors and acid gas treatment units #### **4.4 Specialized Applications** - **Pollution Control Equipment**: Tubing in FGD systems and scrubbers - **Pharmaceutical Industry**: Process tubing for corrosive chemical handling - **Pulp and Paper Industry**: Digester heating tubes and bleach plant tubing - **Metal Surface Treatment**: Pickling line heating and process tubing --- ### **5. Key Features & Benefits** - **Superior Corrosion Resistance**: Excellent performance in both oxidizing and reducing environments - **High Pitting Resistance**: PREN value >30 ensures exceptional resistance to localized corrosion - **Stress Corrosion Cracking Resistance**: Outstanding performance in chloride-containing environments - **Excellent Fabricability**: Can be bent, expanded, and welded using standard techniques - **Optimized Wall Thickness**: Consistent wall distribution for maximum heat transfer efficiency - **Smooth Internal Surface**: Minimizes fouling and pressure drop - **Good Thermal Conductivity**: Efficient heat transfer characteristics - **Cost-Effective Solution**: Extended service life reduces maintenance and replacement costs --- ### **6. International Standards & Specifications** | Standard Type | Specification Number | Description | |---------------|----------------------|-------------| | ASTM | B622 | Standard Specification for Seamless Nickel and Nickel Alloy Pipe and Tube | | ASTM | B626 | Standard for Welded Nickel and Nickel Alloy Tube | | ASTM | B775 | General Requirements for Nickel Alloy Tube | | UNS | N06985 | Unified Numbering System Designation | | ASME | SB-622 | Code Case for Pressure Vessel Applications | | DIN | 2.4619 | Material Number and Specification | | EN | 2.4619 | European Standard Designation | --- ### **7. Product Specifications** #### **7.1 Tube Types & Sizes** - **Seamless Tube**: OD 3mm to 150mm, Wall thickness 0.5mm to 12mm - **Welded Tube**: OD 6mm to 300mm, Wall thickness 0.8mm to 8mm - **Heat Exchanger Tubes**: To ASTM/ASME specifications for tube sheets - **Instrumentation Tubes**: Small diameter tubes for precision applications #### **7.2 Technical Specifications** - **OD Tolerance**: ±0.1mm to ±0.5% depending on diameter - **Wall Thickness Tolerance**: ±10% for seamless, ±7.5% for welded - **Straightness**: ≤1.0mm per meter for precision applications - **Surface Finish**: Pickled, bright annealed, or special finishes available --- ### **8. Fabrication & Installation Guidelines** #### **8.1 Tube Installation** - **Tube Expansion**: Proper rolling techniques to avoid over-thinning - **Bending**: Cold bending for radii >3×OD; mandrel bending for tight radii - **Cutting**: Band saw or abrasive cutting with proper deburring - **Cleaning**: Chemical cleaning to remove manufacturing residues #### **8.2 Welding & Joining** - **Welding Methods**: GTAW (TIG) preferred for tube-to-tubesheet welding - **Filler Metals**: AWS A5.14 ERNiCrMo-10 or equivalent - **Tube-to-Tubesheet Welding**: Strength welding or light expansion with seal welding - **Purge Gas**: Maintain proper internal purge during welding operations #### **8.3 Quality Control** - **Leak Testing**: Pneumatic or hydrostatic testing as required - **Dimensional Verification**: OD, wall thickness, and straightness checks - **Surface Inspection**: Visual and dye penetrant examination - **Documentation**: Certified Mill Test Reports with full traceability --- ### **9. Quality Assurance & Certification** - **Material Certification**: EN 10204 3.1/3.2 with full traceability - **Non-Destructive Testing**: Eddy current, ultrasonic, hydrostatic testing - **Chemical Analysis**: Verified by spectrometer and wet chemical methods - **Mechanical Testing**: Tensile, hardness, and flattening tests - **Certifications**: ISO 9001, PED 2014/68/EU, NORSOK compliance - **Documentation**: Complete certification package including heat treatment records --- **Disclaimer**: The technical information provided represents typical values and is for reference purposes. Actual properties may vary based on manufacturing process, tube size, and heat treatment condition. Users must verify suitability for specific applications through appropriate testing and consult with technical experts for pressure-containing applications. Compliance with all applicable safety standards, codes, and regulations is mandatory.

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 2850 gallon liquid totes Special package is available on request.