NIMONIC Alloy 105,BS HR3; Werkstoff Nr. 2.4634; ，1

### **Product Introduction: NIMONIC® Alloy 105** **NIMONIC® Alloy 105** is a high-performance precipitation-hardenable nickel-chromium-cobalt superalloy that represents an advanced member of the Nimonic series. Developed for exceptional high-temperature strength and creep resistance, this alloy is specifically engineered to maintain outstanding mechanical properties at temperatures up to 950°C (1742°F). Its optimized composition provides superior microstructural stability and excellent oxidation resistance, making it particularly suitable for critical rotating components in gas turbine engines and other high-temperature applications where reliability under extreme conditions is paramount. The alloy achieves its exceptional properties through a sophisticated combination of solid-solution strengthening and gamma prime (γ') precipitation hardening, with carefully balanced additions of cobalt, molybdenum, titanium, and aluminum that create a stable microstructure capable of withstanding prolonged exposure to high stresses at elevated temperatures. --- ### **Chemical Composition** The chemical composition is precisely controlled to achieve optimal high-temperature performance and microstructural stability: | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | Balance | | **Chromium (Cr)** | 14.0 - 15.7 | | **Cobalt (Co)** | 18.0 - 22.0 | | **Molybdenum (Mo)** | 4.5 - 5.5 | | **Aluminum (Al)** | 4.5 - 4.9 | | **Titanium (Ti)** | 0.9 - 1.5 | | **Iron (Fe)** | 1.0 max | | **Carbon (C)** | 0.13 - 0.20 | | **Manganese (Mn)** | 0.5 max | | **Silicon (Si)** | 0.5 max | | **Boron (B)** | 0.005 - 0.010 | | **Zirconium (Zr)** | 0.05 - 0.10 | --- ### **Physical Properties** Nimonic Alloy 105 exhibits excellent physical characteristics for high-temperature service: | Property | Value | | :--- | :--- | | **Density** | 8.08 g/cm³ | | **Melting Point** | 1345-1390 °C | | **Thermal Conductivity** | 12.1 W/m·K (at 20°C) | | **Electrical Resistivity** | 1.32 μΩ·m | | **Modulus of Elasticity** | 228 GPa (at 20°C) | | **Coefficient of Thermal Expansion** | 13.6 μm/m·°C (20-800°C) | | **Specific Heat Capacity** | 450 J/kg·K | | **Magnetic Permeability** | <1.01 | --- ### **Mechanical Properties** The alloy demonstrates exceptional high-temperature mechanical performance: **Room Temperature Properties (Fully Heat Treated):** - **Tensile Strength:** 1250-1450 MPa - **Yield Strength (0.2% Offset):** 900-1100 MPa - **Elongation:** 12-22% - **Reduction of Area:** 18-28% - **Hardness:** 36-44 HRC **High-Temperature Performance:** - **Creep Rupture Strength (850°C/100h):** 250 MPa - **Fatigue Strength (800°C):** 320 MPa - **Stress Rupture Life (850°C/250MPa):** >200 hours --- ### **Heat Treatment** **Solution Treatment:** - Temperature: 1180-1200°C - Soaking Time: 2-4 hours - Cooling: Rapid air cooling or oil quenching **Precipitation Hardening:** - Primary Aging: 1050-1080°C for 4-8 hours, air cool - Secondary Aging: 700-750°C for 16-24 hours, air cool --- ### **Key Characteristics & Advantages** 1. **Exceptional High-Temperature Strength** - Maintains mechanical properties up to 950°C - Superior creep and stress rupture resistance - Excellent thermal fatigue performance 2. **Outstanding Microstructural Stability** - Resistant to phase transformation and coarsening - Maintains properties during long-term exposure - Excellent resistance to thermal aging effects 3. **Superior Environmental Resistance** - Excellent oxidation resistance up to 1100°C - Good resistance to hot corrosion and sulfidation - Stable protective oxide layer formation 4. **Advanced Manufacturing Capability** - Suitable for precision investment casting - Can be isothermally forged - Requires specialized machining techniques --- ### **Product Applications** **Aerospace Industry:** - High-pressure turbine blades - Turbine disks and rotors - Combustion chamber components - Afterburner components - Exhaust system parts **Power Generation:** - Industrial gas turbine blades - Turbine disks and shafts - High-temperature fasteners - Combustion system components **Specialized Applications:** - Nuclear reactor components - Rocket engine parts - High-temperature test equipment - Specialized tooling for high-temperature processes --- ### **International Standards** Nimonic Alloy 105 conforms to major international specifications: | Standard Type | Standard Number | Description | | :--- | :--- | :--- | | **BS** | HR3 | British Standard | | **Werkstoff** | 2.4634 | Material Number | | **AFNOR** | NK 20 CDA | French Standard | | **AECMA** | Pr EN 2179-2181 | European Aerospace Standard | | **WL Nr.** | 2.4634 | Alternative Material Number | --- ### **Summary** **NIMONIC Alloy 105** represents an advanced nickel-chromium-cobalt superalloy offering exceptional high-temperature performance for demanding aerospace and power generation applications. Its sophisticated composition, featuring optimized cobalt, molybdenum, and aluminum content combined with precise control of precipitation hardening elements, provides outstanding creep resistance, microstructural stability, and oxidation resistance at temperatures approaching 950°C. The alloy's capability to maintain mechanical integrity under extreme conditions makes it ideal for critical rotating components in modern gas turbine engines, where reliability and performance are essential. Compliance with multiple international standards including BS HR3, Werkstoff 2.4634, and AECMA Pr EN 2179-2181 ensures consistent quality and performance across global applications, providing confidence for engineers designing high-temperature propulsion and power systems.

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 3316 gallon liquid totes Special package is available on request.