Alloy 601，Inconel 601 Bar(Round bar, Flat bar)，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 Bar (Round Bar, Flat Bar) / UNS N06601 – Nickel-Chromium-Iron-Aluminum Alloy Bar** **Product Overview** Inconel 601 Bar (Round Bar and Flat Bar) in UNS N06601 is a nickel-chromium-iron alloy with aluminum addition, specifically designed for high-temperature applications requiring exceptional oxidation resistance and mechanical strength. These bar products offer excellent structural integrity and fabricability for components operating in extreme thermal environments up to 1250°C (2282°F). The combination of round and flat bar forms provides design flexibility for various industrial applications while maintaining superior performance in oxidizing, carburizing, and nitriding atmospheres. --- **Chemical Composition (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 aluminum content enables formation of a continuous, adherent aluminum oxide layer that provides exceptional high-temperature oxidation resistance up to 1250°C.* --- **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)** **Round Bar Properties** | Property | Room Temperature | 800°C (1472°F) | 1000°C (1832°F) | |-----------------------------|------------------|----------------|-----------------| | **Tensile Strength** | 655–760 MPa | 180–220 MPa | 80–110 MPa | | **Yield Strength (0.2% Offset)** | 275–345 MPa | 120–150 MPa | 60–80 MPa | | **Elongation in 4D** | 45–60% | 40–55% | 50–70% | | **Hardness** | 80–95 HRB | 70–85 HRB | 60–75 HRB | **Flat Bar Properties** | Property | Hot Rolled | Cold Finished | |-----------------------------|------------|---------------| | **Tensile Strength** | 690–830 MPa| 655–760 MPa | | **Yield Strength (0.2% Offset)** | 310–450 MPa| 275–345 MPa | | **Elongation in 2"** | 35–50% | 45–60% | --- **Product Specifications & Available Forms** **Round Bar** - **Diameter Range**: 6 mm to 300 mm (0.25" to 12") - **Condition**: Hot finished, cold finished, centerless ground - **Tolerance**: ±0.1 mm for precision ground bars - **Length**: 3–6 meters (10–20 feet), cut to size available **Flat Bar** - **Thickness**: 3 mm to 150 mm (0.125" to 6") - **Width**: 10 mm to 300 mm (0.375" to 12") - **Condition**: Hot rolled, cold drawn, annealed - **Edge Types**: Square edges, rounded corners (as required) **Surface Conditions** - Hot rolled, annealed, and pickled - Cold drawn, annealed, and pickled - Centerless ground and polished - Turned and polished for precision applications --- **Key Characteristics & Advantages** 1. **Exceptional High-Temperature Strength** – Maintains mechanical properties at temperatures up to 1250°C (2282°F) 2. **Superior Oxidation Resistance** – Excellent performance in oxidizing atmospheres due to protective aluminum oxide scale 3. **Excellent Carburization Resistance** – Superior to most alloys in carburizing environments 4. **Good Thermal Fatigue Resistance** – Withstands cyclic temperature variations without degradation 5. **Excellent Machinability** – Can be machined to precise tolerances using standard methods 6. **Good Weldability** – Can be welded using common welding techniques with matching filler metals 7. **Resistance to Sulfur Attack** – Performs well in sulfur-containing atmospheres --- **Product Applications** **Heat Treatment Industry** - Radiant tube supports and hangers - Furnace roller rails and shafts - Retort and muffle structural components - Heat treatment fixture frames - Basket and tray support systems **Chemical Processing** - Reactor internal support beams - High-temperature valve bodies - Process heater structural members - Catalyst support grid bars - Thermal reactor components **Aerospace & Power Generation** - Combustion chamber structural supports - Turbine casing support members - Afterburner component brackets - Exhaust system structural elements - Heat shield support frames **Industrial Furnace Construction** - Heating element support systems - Burner mounting brackets - Refractory anchor systems - Kiln car structural members - Furnace door and frame components **Pollution Control Equipment** - Waste incinerator internal supports - Flue gas ducting structural members - Thermal oxidizer support frames - Catalytic converter housing components - Exhaust system structural supports --- **International Standards** | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | **N06601** | Unified Numbering System | | **ASTM** | B166 | Nickel-Chromium-Iron Alloy Rod and Bar | | **ASME** | SB166 | Boiler and Pressure Vessel Code | | **AMS** | 5715 | Aerospace Material Specification | | **DIN** | 2.4851 | German Standard | | **EN** | NiCr23Fe | European Standard | | **JIS** | NCF 601 | Japanese Industrial Standard | --- **Machining & Fabrication Guidelines** **Machining Parameters** - **Cutting Speed**: 15–25 m/min (50–80 SFM) for turning - **Feed Rate**: 0.15–0.25 mm/rev (0.006–0.010 IPR) - **Depth of Cut**: 2–4 mm (0.080–0.160 inches) - **Tool Material**: Carbide with positive rake angles recommended - **Coolant**: Required for optimum tool life and surface finish **Welding Characteristics** - **Weldability**: Excellent with proper procedures - **Methods**: GTAW (TIG), GMAW (MIG), SMAW - **Filler Metals**: ENiCrFe-2, ENiCrFe-3 - **Preheat**: Not required - **Post-Weld Heat Treatment**: Solution annealing at 1065–1175°C recommended **Forming Operations** - **Hot Working Temperature**: 1150–1230°C (2100–2250°F) - **Cold Working**: Good capability with intermediate annealing - **Minimum Bend Radius**: 2T for annealed material, 4T for cold worked material --- **Heat Treatment** **Solution Annealing** - **Temperature**: 1065–1175°C (1950–2150°F) - **Time**: 30 minutes to 2 hours depending on section size - **Cooling**: Rapid air cool or water quench - **Atmosphere**: Controlled atmosphere recommended for scale-free surface **Stress Relieving** - **Temperature**: 760–870°C (1400–1600°F) - **Time**: 1–4 hours depending on section size - **Cooling**: Air cool to room temperature --- **Quality Assurance & Testing** **Standard Testing** - Chemical analysis verification - Tensile testing at room temperature - Hardness testing (Rockwell B) - Macroetch examination - Dimensional verification **Non-Destructive Testing** - Ultrasonic testing per ASTM A388 - Liquid penetrant examination - Magnetic particle testing (when applicable) **Certification Requirements** - Mill Test Certificates per EN 10204 3.1 - Chemical analysis certificates - Mechanical test reports - Heat treatment records - NDE reports as specified --- **High-Temperature Performance** **Oxidation Resistance Data** - **Maximum Continuous Service**: 1250°C (2282°F) - **Cyclic Oxidation Life**: Excellent up to 1150°C (2102°F) - **Oxidation Rate**: <0.5 mm/year at 1100°C in air - **Scale Characteristics**: Forms dense, adherent Al₂O₃ scale **Creep and Rupture Properties** - **1000h Rupture Strength at 980°C**: 35 MPa (5 ksi) - **1000h Rupture Strength at 1095°C**: 12 MPa (1.7 ksi) - **Minimum Creep Rate**: 0.0001%/h at 980°C under 35 MPa stress --- **Corrosion Resistance Performance** **Excellent Resistance To** - High-temperature oxidation - Carburizing atmospheres - Nitriding environments - Sulfur-containing gases - Molten salt corrosion **Good Resistance To** - Nitric acid solutions - Alkaline environments - Organic acid vapors - Atmospheric corrosion - Steam and water vapor --- **Packaging & Handling** **Standard Packaging** - Wooden crates with protective coating - Plastic end caps for protection - Weather-proof wrapping - Clear identification and heat number labeling **Storage & Handling** - Store in clean, dry conditions - Protect from carbon steel contamination - Use separate storage from other metals - Employ proper lifting equipment for heavy sections --- **Conclusion** Inconel 601 Bar in round and flat forms (UNS N06601) offers an outstanding combination of exceptional high-temperature oxidation resistance, excellent mechanical strength, and versatile fabrication characteristics. The availability in both round and flat bar configurations provides engineers and manufacturers with flexible solutions for structural components, machining stock, and high-temperature applications across heat treatment, chemical processing, aerospace, and pollution control industries. With comprehensive international standardization and proven performance in extreme environments, Inconel 601 bar products continue to be the material of choice for applications requiring reliability in high-temperature corrosive service conditions where oxidation resistance and structural integrity are paramount.

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 1730 gallon liquid totes Special package is available on request.