Alloy 625，Inconel 625 Rod，UNS N06625，EFORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA21，American Specs:AMS 5581 Tube AMS 5599 Sheet, Strip and Plate AMS 5666 Bar, Forgings AMS 5869 Sheet, Strip and Plate AMS 5879 Sheet, Strip and Foil AMS 5837 Welding Wire ASTM F3056 Powder AMS 7001 Powder，German Specs:WS 2.4856, AFNOR NC22DNb

### **Alloy 625 / Inconel 625 Rod / UNS N06625 – Nickel-Chromium-Molybdenum-Niobium Alloy Rod** **Product Overview** Inconel 625 Rod (UNS N06625) is a nickel-chromium-molybdenum-niobium alloy rod that offers exceptional strength, outstanding corrosion resistance, and excellent fabricability. The rod form provides superior machinability and mechanical properties for components operating in extreme environments ranging from cryogenic temperatures up to 1200°C (2192°F). Its unique combination of niobium and molybdenum provides resistance to various corrosive media, making it particularly suitable for aerospace, marine, chemical processing, and nuclear applications requiring high-strength, corrosion-resistant components. --- **Chemical Composition (ASTM B446)** | Element | Content (%) | |----------------|----------------| | **Nickel (Ni)** | 58.0 min | | **Chromium (Cr)**| 20.0–23.0 | | **Molybdenum (Mo)**| 8.0–10.0 | | **Niobium (Nb)** | 3.15–4.15 | | **Iron (Fe)** | 5.0 max | | **Carbon (C)** | 0.10 max | | **Manganese (Mn)**| 0.50 max | | **Silicon (Si)** | 0.50 max | | **Phosphorus (P)**| 0.015 max | | **Sulfur (S)** | 0.015 max | *The combination of molybdenum and niobium provides exceptional strength and corrosion resistance through solid solution strengthening mechanisms.* --- **Physical Properties** | Property | Value | |-------------------------------|---------------------------------| | **Density** | 8.44 g/cm³ (0.305 lb/in³) | | **Melting Range** | 1290–1350°C (2350–2460°F) | | **Electrical Resistivity** | 129 μΩ·cm (at 21°C) | | **Thermal Conductivity** | 9.8 W/m·K (at 100°C) | | **Mean Coefficient of Thermal Expansion** | 12.8 μm/m·°C (20–100°C) | | **Modulus of Elasticity** | 207 GPa (30,000 ksi) | | **Magnetic Permeability** | <1.005 (Essentially non-magnetic)| --- **Mechanical Properties (Rod – Annealed Condition)** | Property | Room Temperature | 650°C (1200°F) | 815°C (1500°F) | |-----------------------------|------------------|----------------|----------------| | **Tensile Strength** | 830–1030 MPa | 620–820 MPa | 450–650 MPa | | **Yield Strength (0.2% Offset)** | 410–620 MPa | 330–480 MPa | 260–380 MPa | | **Elongation in 4D** | 40–55% | 35–50% | 40–55% | | **Reduction of Area** | 60–75% | 55–70% | 60–75% | | **Hardness** | 90–110 HRB | 80–100 HRB | 70–90 HRB | **Hot Finished Rod Properties** - **Tensile Strength**: 860–1060 MPa (125–154 ksi) - **Yield Strength**: 450–660 MPa (65–96 ksi) - **Elongation**: 35–50% --- **Rod Specifications & Available Forms** **Rod Types** - Hot finished round rod - Cold finished precision rod - Centerless ground rod - Turned and polished rod - Forged rod **Diameter Ranges** - **Hot Finished**: 6 mm to 300 mm (0.25" to 12") - **Cold Finished**: 3 mm to 100 mm (0.125" to 4") - **Centerless Ground**: 3 mm to 75 mm (0.125" to 3") - **Length**: Standard 3–6 meters (10–20 feet), cut to size available **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 Corrosion Resistance** – Outstanding performance in wide range of corrosive media 2. **High Strength Across Temperature Range** – Maintains properties from cryogenic to high temperatures 3. **Excellent Fatigue Resistance** – Superior performance under cyclic loading conditions 4. **Good Oxidation Resistance** – Performs well in high-temperature oxidizing atmospheres 5. **Excellent Machinability** – Can be machined to precise tolerances using standard methods 6. **Resistance to Chloride Stress Corrosion Cracking** – Superior to many stainless steels 7. **Good Weldability** – Can be welded using common welding techniques --- **Product Applications** **Aerospace & Defense** - Engine mounting components - Turbine shaft materials - Structural fasteners - Missile components - Rocket engine parts **Marine Engineering** - Propeller shafts - Submarine shafting - Marine fastener stock - seawater valve stems - Pump shafts **Chemical Processing** - Reactor agitator shafts - Mixer shafts - High-temperature valve stems - Pump shafts and components - Heat exchanger support rods **Oil & Gas Industry** - Downhole tool components - Wellhead shafts - Valve trim components - Pump rods - Instrumentation components **Nuclear Industry** - Control rod drive mechanisms - Core structural components - Fuel handling equipment - Reactor internals - Radiation resistant components --- **International Standards** | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | **N06625** | Unified Numbering System | | **ASTM** | B446 | Nickel-Chromium-Molybdenum-Niobium Alloy Rod and Bar | | **ASME** | SB446 | Boiler and Pressure Vessel Code | | **AMS** | 5666 | Aerospace Material Specification | | **DIN** | 2.4856 | German Standard | | **EN** | NiCr22Mo9Nb | European Standard | --- **Machining & Fabrication** **Machining Parameters** - **Cutting Speed**: 15–25 m/min (50–80 SFM) for turning - **Feed Rate**: 0.10–0.20 mm/rev (0.004–0.008 IPR) - **Depth of Cut**: 1.5–3.0 mm (0.060–0.120 inches) - **Tool Material**: Carbide with positive rake angles - **Coolant**: Required for optimum tool life and surface finish **Welding Characteristics** - **Weldability**: Excellent with proper procedures - **Methods**: GTAW (TIG), GMAW (MIG), SMAW - **Filler Metals**: ERNiCrMo-3, ENiCrMo-3 - **Preheat**: Not required - **Post-Weld Heat Treatment**: Generally not necessary **Forming Operations** - **Hot Working Temperature**: 1150–1200°C (2100–2200°F) - **Cold Working**: Good capability with intermediate annealing - **Annealing Temperature**: 1150–1200°C (2100–2200°F) --- **Heat Treatment** **Solution Annealing** - **Temperature**: 1150–1200°C (2100–2200°F) - **Time**: 30 minutes to 2 hours depending on diameter - **Cooling**: Rapid air cool or water quench - **Atmosphere**: Controlled atmosphere recommended **Stress Relieving** - **Temperature**: 870–980°C (1600–1800°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 --- **Corrosion Resistance Performance** **Excellent Resistance To** - Pitting and crevice corrosion - Chloride stress corrosion cracking - Intergranular attack - Seawater and marine atmospheres - Oxidizing acids and salts **Good Resistance To** - Sulfuric acid (moderate concentrations) - Phosphoric acid - Hydrochloric acid (dilute solutions) - Organic acids - Alkaline solutions --- **Packaging & Handling** **Standard Packaging** - Wooden crates with protective coating - Plastic end caps for thread 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 625 Rod (UNS N06625) provides an outstanding combination of exceptional corrosion resistance, high mechanical strength, and superior fabrication characteristics in rod form. Its ability to maintain properties across a wide temperature range and resist various corrosive environments makes it particularly suitable for aerospace components, marine engineering, chemical processing equipment, and nuclear applications. Available in various diameters and surface conditions with comprehensive international certification, Inconel 625 rod offers manufacturers and designers a reliable material solution for demanding applications where corrosion resistance, structural integrity, and long-term performance are critical requirements.

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 1755 gallon liquid totes Special package is available on request.