Alloy 601，Inconel 601 ，UNS N06601，EFORU

British Specs:，American Specs:AMS 5715 Bar and Forgings AMS 5870 Sheet, Strip and Plate ASTM B166 ASTM B167 ASTM B168 ASTM B751 ASTM B775 ASTM B829，German Specs:WS 2.4851

### **Alloy 601 / Inconel 601 / UNS N06601 – Nickel-Chromium-Iron Alloy** **Product Overview** Inconel 601 (UNS N06601) is a nickel-chromium-iron alloy with an addition of aluminum, which provides exceptional resistance to high-temperature oxidation and corrosion. This alloy combines high mechanical strength with excellent resistance to a wide range of corrosive environments, making it particularly suitable for applications involving extreme temperatures and aggressive atmospheres. Its outstanding performance in oxidizing, carburizing, and nitriding environments makes it a preferred material for industrial furnace components, heat treatment equipment, and chemical processing systems. --- **Chemical Composition (ASTM B168 / ASTM B166)** | Element | Content (%) | |----------------|----------------| | **Nickel (Ni)** | 58.0–63.0 | | **Chromium (Cr)**| 21.0–25.0 | | **Iron (Fe)** | Balance | | **Aluminum (Al)**| 1.0–1.7 | | **Copper (Cu)** | 1.0 max | | **Manganese (Mn)**| 1.0 max | | **Carbon (C)** | 0.10 max | | **Silicon (Si)** | 0.50 max | | **Sulfur (S)** | 0.015 max | *The addition of aluminum forms a protective oxide scale that provides exceptional resistance to high-temperature oxidation and cyclic oxidation.* --- **Physical Properties** | Property | Value | |-------------------------------|---------------------------------| | **Density** | 8.11 g/cm³ (0.293 lb/in³) | | **Melting Range** | 1320–1370°C (2410–2500°F) | | **Electrical Resistivity** | 118 μΩ·cm (at 21°C) | | **Thermal Conductivity** | 11.2 W/m·K (at 100°C) | | **Mean Coefficient of Thermal Expansion** | 14.2 μm/m·°C (20–100°C) | | **Modulus of Elasticity** | 200 GPa (29,000 ksi) | | **Magnetic Permeability** | <1.005 (Essentially non-magnetic)| --- **Mechanical Properties (Annealed Condition)** | Property | Room Temperature | 1000°F (538°C) | 1500°F (816°C) | 2000°F (1093°C) | |-----------------------------|------------------|----------------|----------------|-----------------| | **Tensile Strength** | 655 MPa (95 ksi) | 520 MPa (75 ksi)| 240 MPa (35 ksi)| 110 MPa (16 ksi)| | **Yield Strength (0.2% Offset)** | 275 MPa (40 ksi) | 220 MPa (32 ksi)| 130 MPa (19 ksi)| 90 MPa (13 ksi) | | **Elongation in 2"** | 45% | 40% | 50% | 60% | | **Hardness** | 80 HRB | 75 HRB | 65 HRB | 55 HRB | | **Creep Rupture Strength** | - | - | 55 MPa (8 ksi)*| 15 MPa (2 ksi)* | *1000 hours rupture life --- **Key Characteristics & Advantages** 1. **Exceptional High-Temperature Strength** – Maintains mechanical properties up to 2200°F (1204°C) 2. **Outstanding Oxidation Resistance** – Superior performance in oxidizing atmospheres up to 2300°F (1260°C) 3. **Excellent Carburization Resistance** – Good resistance to carburizing environments 4. **Good Corrosion Resistance** – Performs well in various corrosive media including nitric acid and alkalies 5. **Excellent Thermal Stability** – Resists thermal fatigue and cyclic oxidation 6. **Good Fabricability** – Can be welded, formed, and machined using standard techniques 7. **Resistance to Sulfur Attack** – Good performance in sulfur-containing atmospheres --- **Product Applications** **Heat Treatment Industry** - Radiant tubes and retorts - Furnace muffles and retorts - Heat treatment baskets and fixtures - Roller hearth and conveyor components - Annealing covers and bases **Chemical Processing** - Catalyst support grids - Reactor internals - Heat exchanger components - High-temperature ducting - Process heater tubes **Aerospace & Power Generation** - Combustion cans and liners - Afterburner components - Heat shield panels - Turbine seals and rings - Exhaust system components **Industrial Furnaces** - Heating element supports - Thermocouple protection tubes - Burner nozzles - Refractory anchors - Atmosphere generator parts **Pollution Control** - Waste incineration systems - Flue gas desulfurization equipment - Thermal oxidizer components - Catalytic converter supports - Exhaust gas treatment systems --- **International Standards** | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | **N06601** | Unified Numbering System | | **ASTM** | B168 | Plate, Sheet, and Strip | | **ASTM** | B166 | Rod, Bar, and Wire | | **ASTM** | B167 | Seamless Pipe and Tube | | **ASME** | SB168 | Boiler and Pressure Vessel Code | | **AMS** | 5715 | Aerospace Material Specification | | **DIN** | 2.4851 | German Standard | | **EN** | NiCr23Fe | European Standard | --- **High-Temperature Performance** **Oxidation Resistance** - **Continuous Service**: Up to 2300°F (1260°C) - **Cyclic Service**: Up to 2200°F (1204°C) - **Oxidation Rate**: <2 mg/cm²/100h at 2200°F - **Scale Formation**: Thin, adherent, and self-healing **Carburization Resistance** - **Temperature Range**: Up to 2100°F (1150°C) - **Performance**: Superior to most nickel-based alloys - **Applications**: Carburizing furnace components **Nitriding Resistance** - **Temperature Range**: Up to 1800°F (980°C) - **Performance**: Good resistance to nitriding atmospheres --- **Fabrication & Processing** **Welding Characteristics** - **Weldability**: Excellent - **Methods**: GTAW, GMAW, SMAW - **Filler Metals**: ENiCrFe-2, ENiCrFe-3 - **Preheating**: Not required - **Post-Weld Heat Treatment**: Generally not necessary **Machining Guidelines** - **Tools**: Carbide tools recommended - **Speeds**: Moderate speeds with positive rake - **Feeds**: Medium to heavy feeds - **Coolants**: Required for optimum results **Forming Operations** - **Cold Working**: Good capability with intermediate annealing - **Hot Working**: 1800–2250°F (980–1230°C) - **Annealing**: 1950–2150°F (1065–1175°C) --- **Heat Treatment** **Solution Annealing** - **Temperature**: 1950–2150°F (1065–1175°C) - **Time**: 30 minutes to 2 hours - **Cooling**: Rapid air cool or water quench **Stress Relieving** - **Temperature**: 1400–1600°F (760–870°C) - **Time**: 1–4 hours depending on section size --- **Quality Assurance & Testing** **Standard Testing** - Chemical analysis verification - Tensile testing at room and elevated temperatures - Hardness testing - Bend testing - Microstructural examination **High-Temperature Testing** - Oxidation testing per ASTM G54 - Creep and stress rupture testing - Thermal fatigue testing - Cyclic oxidation testing **Certification** - Mill Test Certificates per EN 10204 3.1 - Chemical analysis certificates - Mechanical test reports - Heat treatment records - NDE reports as specified --- **Corrosion Resistance** **Excellent Resistance To** - High-temperature oxidation - Carburizing atmospheres - Nitriding environments - Sulfur-containing atmospheres - Molten salts **Good Resistance To** - Nitric acid - Alkaline solutions - Organic acids - Atmospheric corrosion - Steam and condensate --- **Available Product Forms** - Plate and Sheet - Rod and Bar - Wire and Strip - Pipe and Tube - Forgings and Fittings - Welding Products --- **Conclusion** Inconel 601 (UNS N06601) is a versatile nickel-chromium-iron-aluminum alloy that offers an exceptional combination of high-temperature strength, outstanding oxidation resistance, and excellent mechanical properties. Its superior performance in extreme temperature environments, coupled with good fabricability and corrosion resistance, makes it ideal for applications in heat treatment, chemical processing, aerospace, and power generation industries. The alloy's ability to form a protective aluminum oxide scale ensures long-term performance in aggressive high-temperature environments, providing engineers and designers with a reliable material solution for the most demanding high-temperature applications.

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 1728 gallon liquid totes Special package is available on request.