Alloy PK33,Nimonic PK33 Plate,,E FORU

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

### **Product Data Sheet: Alloy PK33 / Nimonic PK33 Plate (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 **plate**, this material delivers **exceptional high-temperature strength, outstanding creep resistance, and superior structural stability** at temperatures up to 950°C (1740°F). Nimonic PK33 plate is manufactured to provide reliable performance in the most demanding high-temperature structural applications where dimensional stability, mechanical reliability, and long-term performance under extreme thermal cycling are critical. The plate form offers excellent fabrication versatility while maintaining the alloy's superior high-temperature characteristics. --- #### **1. Chemical Composition** | Element | Content (%) (Typical) | Role in the Alloy | | :--- | :--- | :--- | | **Nickel (Ni)** | Balance | Austenitic matrix; provides corrosion resistance and structural integrity | | **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** **Plate Dimensions:** * **Thickness:** 5mm to 150mm (0.2" to 6") * **Width:** 1000mm to 2000mm (40" to 80") * **Length:** 2000mm to 6000mm (80" to 240") * **Custom sizes available upon request** **Thickness Tolerances:** * **5-25mm:** ±0.2mm * **25-50mm:** ±0.3mm * **50-150mm:** ±0.5mm **Surface Condition:** * Hot-rolled, annealed, and pickled * Machined surfaces available * Ultrasonic testing per applicable standards --- #### **5. Key Characteristics** * **Exceptional High-Temperature Strength:** Superior performance up to 950°C * **Outstanding Creep Resistance:** Excellent stress rupture properties under load * **Excellent Oxidation Resistance:** Extended service life in oxidizing environments * **Thermal Fatigue Resistance:** Superior performance under thermal cycling conditions * **Good Weldability:** Can be welded using matched filler metals and proper procedures * **Machinability:** Can be machined using appropriate tools and techniques * **Dimensional Stability:** Maintains shape and dimensions under extreme thermal stress * **Microstructural Stability:** Maintains properties during long-term high-temperature exposure --- #### **6. Product Applications** Nimonic PK33 plate is specified for critical high-temperature structural applications: * **Aerospace & Gas Turbine Engines:** * **Combustion chamber assemblies and liners** * **Turbine casing components** * **Afterburner structures** * **Exhaust system components** * **Support brackets and frames** * **Heat shield assemblies** * **Power Generation:** * **Advanced gas turbine structural components** * **Combustion liner supports** * **Transition duct sections** * **Turbine platform segments** * **Heat recovery system components** * **Industrial Processing:** * **High-temperature reactor vessels** * **Thermal processing equipment** * **Chemical processing fixtures** * **Pyroprocessing system components** * **Special Applications:** * **Rocket engine components** * **Nuclear reactor fixtures** * **High-temperature test fixtures** * **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** | Plate, Sheet, and Strip | | **British Standard** | **BS HR 8** | Plate and Sheet Specifications | | **European** | **EN 10302** | Nickel and cobalt alloys | | **Werkstoff Nr.** | **2.4955** | Material number | | **ASME** | **SB-168** | ASME Code Case for pressure applications | --- #### **8. Quality Assurance** **Testing Requirements:** * Chemical analysis certification * Mechanical properties testing at room and elevated temperatures * Ultrasonic testing per ASTM A388 * Grain size assessment * Macro-etch testing * Surface quality inspection **Certification:** * Material Test Certificate 3.1 per EN 10204 * Full traceability to melt heat number * Heat treatment compliance records * Non-destructive testing reports * Dimensional inspection reports --- **Summary** **Alloy PK33 Plate (Nimonic PK33, UNS N07041)** provides an exceptional combination of extreme temperature performance, structural stability, and fabrication versatility for the most demanding applications. Its outstanding creep resistance and oxidation stability at temperatures up to 950°C make it particularly suitable for advanced gas turbine components, high-temperature reactors, and critical aerospace structures where conventional materials cannot perform. The plate form offers excellent fabrication versatility 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 testing protocols guarantee material performance and traceability, making Nimonic PK33 plate the ideal choice for engineers designing systems that must operate reliably under the most severe thermal conditions encountered in modern high-technology applications. The alloy's good weldability and adequate machinability further enhance its suitability for fabricating complex structural components for extreme temperature service.

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 2188 gallon liquid totes Special package is available on request.