Waspaloy,Waspaloy,UNS N07001,E FORU

### **Waspaloy® / UNS N07001

** **Nickel-Based Superalloy for High-Temperature Turbine Applications

** --- #### **1. Overview** **Waspaloy** is a precipitation-hardenable nickel-based superalloy specifically developed for high-temperature applications in gas turbine engines. This alloy combines excellent high-temperature strength, outstanding creep resistance, and good oxidation resistance up to 870°C (1600°F). Waspaloy is strengthened by a combination of gamma prime (γ') precipitation and solid-solution hardening, making it particularly suitable for rotating components such as turbine discs, shafts, and blades that require long-term reliability under extreme conditions. 

 --- #### **2. Chemical Composition (Weight %)

** The typical chemical composition of Waspaloy is outlined below. The balance is Nickel (Ni). 

| Element | Content (%) | Key Function | 

| :--- | :--- | :--- | 

| **Nickel (Ni)** | Balance | Forms the austenitic matrix and provides fundamental high-temperature capability. | 

| **Chromium (Cr)** | 18.0 - 21.0 | Provides oxidation and hot corrosion resistance. | 

| **Cobalt (Co)** | 12.0 - 15.0 | Enhances solid-solution strengthening and elevates γ' solvus temperature. | 

| **Molybdenum (Mo)** | 3.5 - 5.0 | Provides solid-solution strengthening and enhances creep resistance. | 

| **Aluminum (Al)** | 1.2 - 1.6 | Primary precipitation hardening element forming γ' phase (Ni₃Al). | 

| **Titanium (Ti)** | 2.75 - 3.25 | Co-precipitates with aluminum to form γ' phase (Ni₃(Al,Ti)). | 

| **Iron (Fe)** | 2.0 max | Controlled impurity; kept low to maintain high-temperature properties. | 

| **Zirconium (Zr)** | 0.02 - 0.12 | Improves creep-rupture properties and thermal stability. | 

| **Boron (B)** | 0.003 - 0.010 | Enhances creep strength and grain boundary cohesion. | 

| **Carbon (C)** | 0.02 - 0.10 | Forms carbides for grain boundary strengthening. | 

| **Manganese (Mn)** | 0.10 max | Controlled impurity. | 

| **Silicon (Si)** | 0.15 max | Controlled impurity. | 

| **Copper (Cu)** | 0.10 max | Controlled impurity. | 

| **Sulfur (S)** | 0.015 max | Impurity, kept very low to prevent hot shortness. | 

 --- #### **3. Physical Properties** 

| Property | Value / Condition | 

| :--- | :--- | 

| **Density** | 8.22 g/cm³ (0.297 lb/in³) | 

| **Melting Range** | ~ 1330 - 1360 °C (2425 - 2480 °F) | 

| **Mean Coefficient of Thermal Expansion** | 20 - 540°C (68 - 1000°F): **13.5 x 10⁻⁶/°C** (7.5 x 10⁻⁶/°F) | 

| **Thermal Conductivity** | 12.9 W/m·K (89 Btu·in/hr·ft²·°F) at 21°C (70°F) | 

| **Specific Heat** | 435 J/kg·K (0.104 Btu/lb·°F) at 21°C (70°F) | 

| **Electrical Resistivity** | 1.26 μΩ·m at 21°C (70°F) | 

| **Modulus of Elasticity (Young's Modulus)** | 218 GPa (31.6 x 10⁶ psi) at 21°C (70°F) | 

| **Magnetic Permeability** | Essentially non-magnetic. | 

 --- #### **4. Mechanical Properties 

(Typical for Aged Condition)

** | Property | At Room Temperature | At 650°C (1200°F) | At 760°C (1400°F) | 

| :--- | :--- | :--- | :--- | 

| **Tensile Strength** | 1240 MPa (180 ksi) | 930 MPa (135 ksi) | 690 MPa (100 ksi) | 

| **Yield Strength (0.2% Offset)** | 1035 MPa (150 ksi) | 795 MPa (115 ksi) | 620 MPa (90 ksi) | 

| **Elongation (in 50 mm / 2 in)** | 15% | 14% | 16% | 

| **Reduction of Area** | 22% | 20% | 23% | 

| **Hardness (Rockwell C)** | 36 - 40 HRC | - | - | 

 --- #### **5. International Standards

** Waspaloy is covered by the following international specifications: 

 *   **ASTM:**    

*   **B637:** Standard Specification for Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock for High-Temperature Service 

*   **AMS:**    

*   **AMS 5544:** Sheet, Strip, and Plate    

*   **AMS 5708:** Bar and Forging Stock    

*   **AMS 5828:** Welding Wire 

*   **UNS:** N07001 

*   **ISO:**    

*   **ISO 9723:** Aerospace series 

*   **AECMA:**    

*   **PREN 2954:** Aerospace series

 --- #### **6. Product Applications

** Waspaloy is extensively used in critical high-temperature applications: 

 *   **Aerospace Gas Turbines:

**    *   Turbine discs and rotors    

*   Compressor discs and shafts    

*   Turbine blades and vanes    

*   Spacers and seals 

*   **Industrial Gas Turbines:

**    *   Rotor components    

*   Turbine wheels    

*   High-temperature fasteners 

*   **Power Generation:

**    *   Gas turbine components for power plants    

*   High-temperature bolting 

*   **Nuclear Industry:

**    *   Core components    

*   Heat exchanger parts 

 --- #### **7. Key Characteristics & Advantages

** *   **Excellent High-Temperature Strength:

** Maintains mechanical properties up to 870°C (1600°F) 

*   **Outstanding Creep Resistance:

** Superior performance under sustained loading at elevated temperatures 

*   **Good Oxidation Resistance:** Suitable for long-term service in high-temperature environments 

*   **Excellent Fatigue Resistance:** Withstands cyclic loading conditions in turbine applications 

*   **Good Thermal Stability:** Maintains microstructural integrity during extended high-temperature exposure 

*   **Proven Reliability:** Extensive service history in critical aerospace applications since the 1950s 

*   **Optimized Balance:** Excellent combination of strength, ductility, and environmental resistance 

 --- **Disclaimer:

** *Waspaloy® is a registered trademark of United Technologies Corporation. The values provided are typical and for informational purposes only. For critical applications, always consult the official material data sheets from the supplier and relevant design codes. Waspaloy requires specific heat treatment cycles to achieve optimal properties.*

Packing of Waspaloy,Waspaloy,UNS N07001

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 1674 gallon liquid totes Special package is available on request.