INCONEL Alloy 601,Inconel 601, Nickel-Chromium Alloy; 1

### **Product Introduction: INCONEL® Alloy 601 (UNS N06601)** **INCONEL® Alloy 601** is a high-performance nickel-chromium alloy engineered with exceptional resistance to high-temperature oxidation and corrosion. Its optimized composition, which includes a significant aluminum content in addition to nickel and chromium, allows it to form a highly protective and adherent oxide scale. This makes it exceptionally resistant to cyclic oxidation (thermal cycling), carburization, and sulfur-containing atmospheres. Alloy 601 is a versatile, solid-solution strengthened material that maintains high mechanical strength and excellent fabricability, making it a premier choice for demanding applications in thermal processing, aerospace, and power generation. --- ### **International Standards & Material Equivalents** INCONEL Alloy 601 is standardized under all major international specifications. | Standard Type | Standard Number | Designation / Product Form | | :--- | :--- | :--- | | **UNS (USA)** | **N06601** | **INCONEL Alloy 601** | | **Werkstoff Nr.** | **2.4851** | **2.4851** | | **ASTM** | B168 | Plate, Sheet, and Strip | | **ASTM** | B166 | Rod, Bar, and Forgings | | **ASTM** | B167 | Seamless Pipe and Tube | | **ASTM** | B564 | Forgings | | **DIN (Germany)** | 17744 | NiCr23Al | | **EN (Europe)** | EN 10095 | NiCr23Al | | **AMS (Aerospace)** | AMS 5717 | Seamless Tube | > **Note:** INCONEL® is a registered trademark of Special Metals Corporation. The primary identifiers are **UNS N06601** and **Werkstoff 2.4851**. --- ### **Chemical Composition** The composition is precisely balanced, with aluminum being the key element for superior oxidation resistance. | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | 58.0 - 63.0 | | **Chromium (Cr)** | 21.0 - 25.0 | | **Iron (Fe)** | Balance | | **Aluminum (Al)** | 1.0 - 1.7 | | **Carbon (C)** | 0.10 max. | | **Manganese (Mn)** | 1.0 max. | | **Copper (Cu)** | 1.0 max. | | **Silicon (Si)** | 0.5 max. | | **Sulfur (S)** | 0.015 max. | --- ### **Physical Properties** Alloy 601 possesses physical properties suitable for high-temperature and thermal cycling applications. | Property | Value | | :--- | :--- | | **Density** | 8.11 g/cm³ (0.293 lb/in³) | | **Melting Point** | 1360 - 1410 °C (2480 - 2570 °F) | | **Thermal Conductivity** | 11.2 W/m·K (at 20°C) | | **Electrical Resistivity** | 1.18 μΩ·m (at 20°C) | | **Modulus of Elasticity** | 200 GPa (29 x 10⁶ psi) | | **Coefficient of Thermal Expansion** | 13.9 μm/m·°C (20-100°C) | | **Magnetic Response** | Essentially non-magnetic | --- ### **Mechanical Properties (Typical for Annealed Condition)** The alloy retains good strength at elevated temperatures. | Property | Value (Room Temperature, Annealed) | | :--- | :--- | | **Tensile Strength** | 710 MPa (103 ksi) | | **Yield Strength (0.2% Offset)** | 320 MPa (46 ksi) | | **Elongation** | 45% | | **Hardness (Rockwell B)** | 85 HRB | --- ### **Key Characteristics & Advantages** 1. **Exceptional High-Temperature Oxidation Resistance:** The aluminum content enables the formation of a tenacious, self-healing Al₂O₃ (alumina) scale beneath the Cr₂O₃ (chromia) scale, providing outstanding protection against scaling and spalling at temperatures up to 1250°C (2282°F). 2. **Excellent Resistance to Cyclic Oxidation:** Performs exceptionally well in applications involving repeated heating and cooling, where other alloys may fail due to scale spallation. 3. **Good Resistance to Carburizing and Sulfidizing Atmospheres:** Resists degradation in environments rich in carbon and sulfur, common in petrochemical processing. 4. **High Mechanical Strength:** Maintains good load-bearing capacity at high temperatures. 5. **Excellent Fabricability and Weldability:** Can be readily formed and welded using standard techniques for nickel-base alloys. --- ### **Product Applications** INCONEL Alloy 601 is specified for the most demanding high-temperature environments. * **Thermal Processing:** * **Radiant Tubes,** muffles, and retorts for heat-treating furnaces. * **Roller hearth furnace rollers** and annealing furnace components. * Basket and fixtures for carburizing and nitriding. * **Pollution Control & Incineration:** * **Waste incinerator components** and heat exchangers. * Ducting and support systems for hot corrosive gases. * **Aerospace & Industrial Gas Turbines:** * **Combustion cans,** liners, and afterburner components. * Transition ducts and thermal management rings. * **Chemical & Petrochemical Processing:** * Components in steam/hydrocarbon reformer units. * Catalyst support grids and thermowells in high-temperature reactors. * **Power Generation:** * Heat exchangers and superheater tubing. ### **Summary** **INCONEL Alloy 601 (UNS N06601 / Werkstoff 2.4851)** is a premium nickel-chromium-aluminum alloy specifically engineered to withstand extreme oxidation and corrosive conditions at high temperatures. Its unique ability to form a stable, protective oxide scale makes it superior for applications involving thermal cycling, such as furnace equipment and combustion systems. Governed by international standards like **ASTM B168** and **B166**, it is a critical material for enhancing service life, reliability, and performance in the most aggressive high-temperature environments across the aerospace, industrial heating, and energy sectors.

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 3298 gallon liquid totes Special package is available on request.