Alloy PK33,Nimonic PK33 Sheet,,E FORU

British Specs:DTD 5057，American Specs:，German Specs: AFNOR NC19 KDu/v

### **Product Data Sheet: Alloy PK33 / Nimonic PK33 Sheet (UNS N07041)** **Overview** **Alloy PK33** (commercially known as **Nimonic PK33**) is a high-performance nickel-chromium-cobalt superalloy strengthened by precipitation hardening. In the form of **sheet**, this material delivers **exceptional high-temperature strength, outstanding creep resistance, and excellent formability** at temperatures up to 950°C (1740°F). Nimonic PK33 sheet is precision-rolled to meet the most demanding requirements of high-temperature applications where complex fabrication, thermal stability, and mechanical reliability are essential. The sheet form offers superior fabrication versatility while maintaining the alloy's superior high-temperature characteristics for advanced aerospace and industrial applications. --- #### **1. Chemical Composition** | Element | Content (%) (Typical) | Role in the Alloy | | :--- | :--- | :--- | | **Nickel (Ni)** | Balance | Austenitic matrix; provides corrosion resistance and ductility | | **Chromium (Cr)** | 18.0 - 21.0 | Confers oxidation and hot corrosion resistance | | **Cobalt (Co)** | 16.0 - 21.0 | Solid solution strengthener; enhances high-temperature strength | | **Molybdenum (Mo)** | 8.0 - 10.0 | Provides solid solution strengthening and creep resistance | | **Aluminum (Al)** | 1.0 - 2.0 | Precipitation hardener (forms γ' phase, Ni₃Al) | | **Titanium (Ti)** | 2.5 - 3.5 | Primary precipitation hardener; contributes to γ' formation | | **Carbon (C)** | 0.03 - 0.10 | Forms carbides for grain boundary strength | | **Boron (B)** | 0.003 - 0.010 | Strengthens grain boundaries and improves creep life | | **Zirconium (Zr)** | 0.02 - 0.10 | Enhances creep rupture properties | --- #### **2. Physical Properties** | Property | Value / Condition | | :--- | :--- | | **Density** | 8.25 g/cm³ (0.298 lb/in³) | | **Melting Range** | 1330 - 1380°C (2425 - 2515°F) | | **Specific Heat** | 440 J/kg·K (0.105 Btu/lb·°F) @ 20°C | | **Thermal Conductivity** | 11.2 W/m·K (77.7 Btu·in/hr·ft²·°F) @ 20°C | | **Mean Coefficient of Thermal Expansion** | 13.1 × 10⁻⁶/°C (20-500°C) | | | 16.5 × 10⁻⁶/°C (20-900°C) | | **Electrical Resistivity** | 1.30 μΩ·m @ 20°C | | **Modulus of Elasticity** | 220 GPa (32.0 × 10⁶ psi) @ 20°C | --- #### **3. Mechanical Properties** **Typical Room Temperature Properties (Solution Treated & Aged)** * **Tensile Strength:** 1200-1400 MPa (174-203 ksi) * **Yield Strength (0.2% Offset):** 850-1050 MPa (123-152 ksi) * **Elongation:** 10-20% **Elevated Temperature Performance** * **Stress Rupture Strength (1000 hours):** * **850°C (1560°F):** ~150 MPa (~22 ksi) * **950°C (1740°F):** ~65 MPa (~9.4 ksi) --- #### **4. Product Specifications** **Sheet Dimensions:** * **Thickness:** 0.5mm to 6mm (0.020" to 0.250") * **Width:** Up to 1500mm (60") * **Length:** Up to 4000mm (160") * **Custom sizes available** **Thickness Tolerances:** * **0.5-1.0mm:** ±0.05mm * **1.0-3.0mm:** ±0.08mm * **3.0-6.0mm:** ±0.10mm **Surface Finish:** * Cold-rolled, annealed, and pickled * Bright annealed finish available * Special surface finishes upon request --- #### **5. Key Characteristics** * **Exceptional High-Temperature Strength:** Superior performance up to 950°C * **Outstanding Creep Resistance:** Excellent stress rupture properties * **Excellent Oxidation Resistance:** Extended service life in oxidizing environments * **Good Formability:** Can be formed, deep-drawn, and spun in solution-annealed condition * **Excellent Weldability:** Can be welded using GTAW and GMAW processes * **Thermal Fatigue Resistance:** Superior performance under thermal cycling conditions * **Surface Quality:** Consistent surface finish for fabrication and coating * **Dimensional Stability:** Maintains shape and dimensions under extreme thermal stress --- #### **6. Product Applications** Nimonic PK33 sheet is essential for high-temperature fabricated components: * **Aerospace & Gas Turbine Engines:** * **Combustion chamber liners and floatwalls** * **Afterburner components** * **Exhaust ducting and nozzles** * **Heat shields and thermal protection systems** * **Turbine shrouds and seals** * **Hot air ducting systems** * **Power Generation:** * **Combustion chamber assemblies** * **Transition ducts and diffusers** * **Heat exchanger components** * **Thermal protection systems** * **Gas turbine hot section components** * **Industrial Processing:** * **High-temperature furnace components** * **Radiant tubes and retorts** * **High-temperature containers and vessels** * **Thermal processing equipment** * **Chemical reactor liners** * **Special Applications:** * **Rocket engine components** * **High-temperature seals and gaskets** * **Nuclear reactor components** * **Research and development applications** --- #### **7. International Standards** | Standard Type | Standard Number | Description | | :--- | :--- | :--- | | **Unified Numbering System** | **UNS N07041** | All product forms | | **ASTM** | **ASTM B168** | Standard Specification for Nickel-Chromium-Aluminum Alloy Plate, Sheet, and Strip | | **Aerospace (SAE/AMS)** | **AMS 5807** | Sheet and Strip | | **British Standard** | **BS HR 8** | Sheet Specifications | | **European** | **EN 10302** | Nickel and cobalt alloys | | **Werkstoff Nr.** | **2.4955** | Material number | --- #### **8. Quality Assurance** **Testing & Certification:** * Chemical analysis certification * Mechanical properties testing at elevated temperatures * Surface quality inspection * Dimensional verification * Material Test Certificate 3.1 per EN 10204 **Special Processing:** * Precision slitting capabilities * Custom blanking and shearing * Surface treatment options * Protective packaging --- **Summary** **Alloy PK33 Sheet (Nimonic PK33, UNS N07041)** offers an exceptional combination of extreme temperature performance, oxidation resistance, and fabrication versatility for the most demanding applications. Its outstanding creep strength and thermal stability at temperatures up to 950°C make it particularly suitable for advanced gas turbine components, high-temperature furnaces, and critical aerospace structures where conventional materials cannot perform. The sheet form provides excellent formability and weldability, enabling the fabrication of complex components while maintaining the superior properties that make Nimonic PK33 a preferred choice for extreme temperature service. Compliance with international standards including AMS 5807, ASTM B168, and BS HR 8 ensures consistent quality and reliability for critical applications. Comprehensive quality assurance and precise dimensional control guarantee material performance, making Nimonic PK33 sheet the ideal choice for engineers designing systems that must operate reliably under the most severe thermal conditions encountered in modern high-technology applications.

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 2189 gallon liquid totes Special package is available on request.