Alloy K500，Monel K500 Forgings，UNS N05500，EFORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA18，American Specs:AMS 4676 Bar and Forgings QQ-N-286，German Specs:WS 2.4375

### **Alloy K-500 / Monel K-500 Forgings / UNS N05500 – Age-Hardenable Nickel-Copper Alloy Forgings** **Product Overview** Monel K-500 Forgings (UNS N05500) are high-integrity components manufactured through the forging process from a precipitation-hardenable nickel-copper alloy. These forgings combine the excellent corrosion resistance of Monel 400 with significantly enhanced mechanical properties achieved through specialized age-hardening heat treatment. The forging process produces components with superior grain structure, improved mechanical properties, and enhanced reliability for critical applications in marine, oil and gas, and chemical processing industries. --- **Chemical Composition (ASTM B564)** | Element | Content (%) | |----------------|----------------| | **Nickel (Ni)** | 63.0 min (Balance) | | **Copper (Cu)** | 27.0–33.0 | | **Aluminum (Al)**| 2.30–3.15 | | **Titanium (Ti)**| 0.35–0.85 | | **Iron (Fe)** | 2.0 max | | **Manganese (Mn)**| 1.5 max | | **Carbon (C)** | 0.25 max | | **Silicon (Si)** | 0.5 max | | **Sulfur (S)** | 0.01 max | *The age-hardening mechanism involves precipitation of Ni₃(Ti,Al) intermetallic compounds during thermal treatment.* --- **Physical Properties** | Property | Value | |-------------------------------|---------------------------------| | **Density** | 8.44 g/cm³ (0.305 lb/in³) | | **Melting Range** | 1315–1350°C (2400–2460°F) | | **Electrical Resistivity** | 65.0 μΩ·cm (Annealed) | | **Thermal Conductivity** | 17.0 W/m·K (at 100°C) | | **Thermal Expansion Coefficient** | 13.9 μm/m·°C (20–100°C) | | **Modulus of Elasticity** | 179 GPa (26,000 ksi) | | **Magnetic Permeability** | <1.005 (Essentially non-magnetic) | --- **Mechanical Properties (Forgings – Aged Condition)** *Standard Aging Treatment: 1100°F (593°C) for 16 hours, furnace cool* | Property | Typical Values for Aged Forgings | |-----------------------------|----------------------------------| | **Tensile Strength** | 965–1170 MPa (140–170 ksi) | | **Yield Strength (0.2% Offset)** | 655–965 MPa (95–140 ksi) | | **Elongation in 2"** | 20–30% | | **Reduction of Area** | 35–50% | | **Hardness** | 25–35 HRC | | **Impact Toughness (Charpy V-Notch)** | 40–70 J at 21°C | --- **Forging Types & Manufacturing Processes** **Forging Methods** - **Open-Die Forgings**: Large components with minimal tooling - **Closed-Die Forgings**: Complex shapes with precise dimensions - **Rolled Rings**: Circular components with grain orientation - **Press Forgings**: High-tonnage components with uniform structure **Available Forms** - Bars and shafts - Flanges and fittings - Valve bodies and components - Pump casings and impellers - Marine components - Special shaped forgings **Size Ranges** - **Weight**: Up to 5000 kg (11,000 lbs) - **Dimensions**: Custom sizes per drawing requirements - **Complexity**: Simple to highly complex geometries --- **Key Characteristics & Advantages** 1. **Superior Grain Structure** – Forging process aligns grain flow with component shape 2. **Enhanced Mechanical Properties** – Improved strength, toughness, and fatigue resistance 3. **Excellent Corrosion Resistance** – Superior performance in seawater, acids, and alkaline environments 4. **High Strength-to-Weight Ratio** – Optimal material utilization for weight-sensitive applications 5. **Reduced Defects** – Elimination of porosity and inclusion through forging process 6. **Non-Magnetic Properties** – Essential for marine and electronic applications --- **Product Applications** **Marine & Offshore** - Propeller shafts and stern tubes - Marine engine components - Subsea equipment parts - Shipbuilding structural components **Oil & Gas Industry** - Valve bodies and trim components - Wellhead equipment - Drill string components - Christmas tree parts **Chemical Processing** - Pump shafts and impellers - Valve components - Reactor parts - Mixer shafts and agitators **Aerospace & Defense** - Landing gear components - Engine mounts - Missile and radar components - Structural airframe parts **Power Generation** - Turbine components - Generator parts - Pump components - Heat exchanger parts --- **International Standards** | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | **N05500** | Unified Numbering System | | **ASTM** | B564 | Standard Specification for Nickel Alloy Forgings | | **ASME** | SB564 | Boiler and Pressure Vessel Code – Forgings | | **AMS** | 4676 | Aerospace Material Specification | | **DNV** | 2.4375 | Marine Standard Approval | | **ABS** | N05500 | American Bureau of Shipping | | **LR** | N05500 | Lloyd's Register | --- **Manufacturing Process & Quality Assurance** **Forging Process** - **Heating**: 1600–2100°F (870–1150°C) forging temperature range - **Forging Operation**: Controlled deformation to achieve required shape - **Heat Treatment**: Solution annealing followed by age-hardening - **Finishing**: Machining to final dimensions **Quality Control** - Ultrasonic testing per ASTM A388 - Liquid penetrant examination - Magnetic particle testing (when applicable) - Dimensional verification - Mechanical testing from prolongs **Certification Requirements** - Mill Test Certificates per EN 10204 3.1/3.2 - Chemical analysis reports - Mechanical test certificates - Heat treatment records - NDE reports as specified - Third-party inspection available --- **Heat Treatment Specifications** - **Solution Annealing**: 1600–1650°F (870–900°C), rapid cool - **Aging Treatment**: 1100–1150°F (595–620°C) for 12–16 hours, furnace cool - **Stress Relieving**: 1000–1100°F (540–595°C) for 1–2 hours, air cool --- **Machining & Fabrication** **Machining Guidelines** - Machine in solution-annealed condition when possible - Use positive rake angles and sharp tools - Employ rigid setups to minimize vibration - Use adequate cooling and lubrication **Welding Considerations** - Use Monel 60 or 67 filler metals - Preheating generally not required - Post-weld aging treatment recommended - Qualified welding procedures required --- **Conclusion** Monel K-500 Forgings (UNS N05500) represent the highest quality form of this age-hardenable nickel-copper alloy, offering superior mechanical properties, enhanced reliability, and excellent corrosion resistance. The forging process ensures optimal grain structure and material integrity, making these components ideal for the most demanding applications in marine, oil and gas, chemical processing, and aerospace industries. With comprehensive quality assurance and international certifications, Monel K-500 forgings provide engineers with a trusted solution for critical components where performance, safety, and longevity are essential 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 1711 gallon liquid totes Special package is available on request.