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

British Specs:，American Specs:，German Specs:

**Product Data Sheet: Alloy G-3 / INCO G-3** **Nickel-Chromium-Iron-Molybdenum Alloy** --- ### **1. Product Overview** **Alloy G-3** (commonly known as **INCO G-3**) is a nickel-chromium-iron-molybdenum alloy specifically designed to provide exceptional corrosion resistance in a wide range of severe environments. This alloy offers superior performance in oxidizing and reducing media, with particular effectiveness against sulfuric acid, phosphoric acid, and other aggressive chemicals. With its optimized chemical composition, Alloy G-3 demonstrates excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, making it a preferred choice for demanding industrial applications. --- ### **2. Chemical Composition (Typical % by Weight)** | Element | Content (%) | Function | |---------|-------------|----------| | Nickel (Ni) | Balance | Base element providing corrosion resistance and ductility | | Chromium (Cr) | 21.0-23.5 | Enhances resistance to oxidizing media and pitting corrosion | | Iron (Fe) | 18.0-21.0 | Provides solid solution strengthening | | Molybdenum (Mo) | 6.0-8.0 | Improves resistance to reducing acids and localized corrosion | | Copper (Cu) | 1.5-2.5 | Enhances resistance to sulfuric acid and reducing environments | | Tungsten (W) | ≤1.5 | Improves localized corrosion resistance | | Cobalt (Co) | ≤5.0 | Controls carbon activity and enhances stability | | Manganese (Mn) | ≤1.0 | Deoxidizer and sulfur control | | Silicon (Si) | ≤1.0 | Enhances oxidation resistance | | Carbon (C) | ≤0.015 | Minimized to prevent sensitization | | Phosphorus (P) | ≤0.04 | Controlled for 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) | | Electrical Resistivity | 1.12 μΩ·m 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 | --- ### **4. Product Applications** #### **4.1 Chemical Processing** - **Sulfuric Acid Production**: Reactors, heat exchangers, and piping systems - **Phosphoric Acid Manufacture**: Evaporators, concentrators, and process vessels - **Petrochemical Processing**: Reactors, columns, and transfer lines - **Chemical Reactors**: Vessels handling aggressive chemical media #### **4.2 Pollution Control** - **Flue Gas Desulfurization Systems**: Scrubbers, dampers, and mist eliminators - **Wastewater Treatment**: Equipment handling corrosive effluents - **Air Pollution Control**: Ducting and processing equipment #### **4.3 Oil & Gas Industry** - **Downhole Equipment**: Components for sour gas service - **Pipeline Systems**: Handling corrosive crude and production fluids - **Refinery Equipment**: Heat exchangers and process vessels #### **4.4 Industrial Applications** - **Pulp and Paper Industry**: Digesters and bleach plants - **Pharmaceutical Industry**: Reaction vessels and processing equipment - **Metal Pickling**: Tanks, heaters, and handling systems --- ### **5. Key Features & Benefits** - **Excellent Corrosion Resistance**: Outstanding performance in both oxidizing and reducing environments - **Superior Sulfuric Acid Resistance**: Optimal for concentrations up to 85% - **Pitting and Crevice Corrosion Resistance**: High PREN (Pitting Resistance Equivalent Number) value - **Stress Corrosion Cracking Resistance**: Excellent performance in chloride-containing environments - **Good Fabricability**: Can be welded, formed, and machined using standard techniques - **Thermal Stability**: Maintains properties at elevated temperatures - **Cost-Effective**: Provides superior performance compared to many higher-cost alloys --- ### **6. International Standards & Specifications** | Standard Type | Specification Number | Description | |---------------|----------------------|-------------| | ASTM | B622 | Standard Specification for Seamless Nickel and Nickel Alloy Pipe and Tube | | ASTM | B619 | Standard for Welded Nickel and Nickel Alloy Pipe | | ASTM | B625 | Standard for Plate, Sheet, and Strip | | 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 Forms & Availability** #### **7.1 Standard Product Forms** - **Plate & Sheet**: 3.0 mm to 100 mm thickness - **Pipe & Tube**: Seamless and welded configurations - **Bar & Rod**: 3 mm to 300 mm diameter - **Wire**: Various diameters for welding and specialty applications - **Fittings & Flanges**: Full range of piping components #### **7.2 Size Ranges** - **Plate/Sheet Thickness**: 3.0-100 mm - **Pipe Sizes**: 1/8" to 24" NPS - **Bar Diameter**: 3-300 mm - **Standard Lengths**: Custom lengths available upon request --- ### **8. Fabrication & Processing Guidelines** #### **8.1 Welding** - **Welding Methods**: GTAW (TIG), GMAW (MIG), SMAW - **Filler Metals**: AWS A5.14 ERNiCrMo-10 or equivalent - **Preheating**: Generally not required - **Post-Weld Heat Treatment**: Usually unnecessary for most applications #### **8.2 Machining & Forming** - **Machining**: Use positive rake angles and rigid setups - **Cold Working**: Good formability in annealed condition - **Hot Working**: Forge at 1150-1200°C - **Annealing**: 1150-1200°C followed by rapid cooling --- ### **9. Quality Assurance & Certification** - **Material Certification**: EN 10204 3.1/3.2 - **Testing Protocols**: Mechanical testing, chemical analysis, corrosion testing - **Non-Destructive Testing**: UT, RT, PT, MT as required - **Certifications**: ISO 9001, ASME, PED compliance - **Traceability**: Full material traceability from melt to final product --- **Disclaimer**: The information provided herein is for general reference purposes only. Properties may vary based on manufacturing process, product form, and heat treatment. Users should conduct appropriate testing to verify suitability for specific applications and consult with qualified engineers for critical applications. Continuous product improvement may lead to changes in specifications.

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 2846 gallon liquid totes Special package is available on request.