Nickel-hafnium Master Alloy,Nickel hafnium Alloy，1

### **Product Introduction: Nickel-Hafnium Master Alloy** **Overview** Nickel-Hafnium Master Alloy is a high-performance metallurgical additive specifically engineered for precise hafnium introduction in advanced superalloy systems. This master alloy serves as an efficient vehicle for incorporating hafnium into nickel-based superalloys, particularly in single crystal and directionally solidified alloys for high-temperature applications. The controlled addition of hafnium significantly enhances high-temperature strength, improves oxidation resistance, and optimizes grain boundary strength in demanding aerospace and power generation applications. --- #### **Chemical Composition (Typical % by Weight)** | Element | Content (%) | Role & Benefit | |---------|-------------|---------------| | **Nickel (Ni)** | Balance | Primary carrier metal ensuring optimal solubility and homogeneous distribution | | **Hafnium (Hf)** | 10.0 - 20.0 | Key alloying element providing grain boundary strengthening and oxidation resistance | | **Zirconium (Zr)** | ≤ 2.0 | Naturally occurring associated element | | **Iron (Fe)** | ≤ 0.15 | Controlled residual element | | **Carbon (C)** | ≤ 0.05 | Minimized to prevent unwanted carbide formation | | **Aluminum (Al)** | ≤ 0.10 | Limited to maintain alloy purity | | **Titanium (Ti)** | ≤ 0.08 | Controlled impurity element | | **Oxygen (O)** | ≤ 0.02 | Strictly controlled to prevent oxide formation | | **Other Elements** | ≤ 0.50 | Total controlled impurities | *Note: Hafnium content can be customized from 10% to 20% based on specific application requirements and alloy system compatibility.* --- #### **Physical & Mechanical Properties** **Physical Properties:** - Density: 8.5 - 9.2 g/cm³ (depending on hafnium content) - Melting Range: 1300 - 1450°C (2372 - 2642°F) - Form: Typically supplied as crushed lumps, granules, or customized shapes - Color: Silver-gray metallic appearance - Solubility: Excellent solubility in nickel-based superalloy systems **Typical Characteristics:** - High hafnium recovery rates (85-95%) - Excellent microstructural compatibility - Predictable dissolution kinetics - Good handling and storage stability - Consistent chemical composition batch-to-batch - Controlled intermetallic phase formation --- #### **International Standards and Specifications** While often manufactured to customer-specific requirements, relevant references include: - **ASTM B160:** Nickel Rod and Bar (reference standard) - **ISO 6208:** Wrought nickel and nickel alloys - **AMS 2280:** Trace Element Control for Nickel Alloy - **Custom Specifications:** Customer-specific technical requirements - **Internal Quality Standards:** Comprehensive quality assurance protocols - **Material Certification:** Full traceability with chemical analysis certificate --- #### **Product Applications** **Aerospace Superalloys:** - Single crystal nickel-based superalloys - Directionally solidified turbine blades - Aircraft engine components - Rocket engine parts **Power Generation:** - Gas turbine superalloys - High-temperature structural components - Nuclear reactor alloys - Advanced energy system materials **Specialty Alloys:** - Oxidation-resistant coatings - High-temperature brazing alloys - Special electronic materials - Advanced research alloys **Industrial Applications:** - High-temperature furnace components - Chemical processing equipment - Marine turbine materials - Special tooling alloys --- #### **Key Advantages** 1. **Grain Boundary Strengthening**: Significantly improves creep rupture life and ductility 2. **Oxidation Resistance**: Enhances high-temperature oxidation and hot corrosion resistance 3. **Microstructure Control**: Optimizes γ/γ' microstructure in superalloys 4. **High Temperature Stability**: Maintains mechanical properties under extreme conditions 5. **Improved Castability**: Enhances casting characteristics and defect reduction 6. **Cost-Effective Addition**: Economical compared to pure hafnium metal 7. **Consistent Performance**: Reliable results across production batches 8. **Compatibility**: Excellent compatibility with other superalloying elements --- **Conclusion** Nickel-Hafnium Master Alloy represents a sophisticated metallurgical solution for advanced superalloy development, particularly in single crystal and directionally solidified applications. Its optimized composition ensures efficient hafnium incorporation, high recovery rates, and consistent performance in the most demanding high-temperature environments. The master alloy's ability to dramatically improve creep resistance, enhance oxidation performance, and strengthen grain boundaries makes it indispensable for next-generation aerospace and power generation applications. Supported by rigorous quality control and specialized manufacturing expertise, Nickel-Hafnium Master Alloy enables the production of superalloys that push the boundaries of high-temperature capability and mechanical performance. This master alloy provides turbine engineers and metallurgists with a critical tool for achieving breakthrough performance in applications where temperature capability, mechanical reliability, and long-term stability are essential for technological leadership and operational success.

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 3451 gallon liquid totes Special package is available on request.