Alloy 43ph，Low expansion 43Ph Alloy Forgings，,E FORU

British Specs:，American Specs:，German Specs:

### **Product Introduction: Alloy 43PH / Low Expansion 43PH Alloy Forgings** **Premium Forged Components for High-Strength Thermal Management Systems** **Alloy 43PH Forgings** represent the highest standard in manufacturing quality for components requiring exceptional dimensional stability, controlled thermal expansion, and superior mechanical strength under demanding service conditions. Through the controlled forging process, this precipitation-hardenable nickel-iron-cobalt alloy develops enhanced mechanical properties, refined grain structure, and optimal directional strength, making it the preferred choice for critical applications in aerospace, defense, and precision instrumentation industries. --- #### **1. Chemical Composition (Weight %)** | Element | Content (%) | Control Significance | | :--- | :--- | :--- | | **Nickel (Ni)** | 42.0 - 43.0 | Primary expansion control | | **Cobalt (Co)** | 5.0 - 6.0 | Precipitation hardening control | | **Titanium (Ti)** | 2.0 - 2.5 | Primary strengthening element | | **Aluminum (Al)** | 0.5 - 0.8 | Secondary strengthening | | **Iron (Fe)** | Balance | Matrix formation | | **Manganese (Mn)** | 0.50 max | Deoxidation control | | **Silicon (Si)** | 0.30 max | Deoxidation agent | | **Carbon (C)** | 0.05 max | Weldability and toughness | | **Chromium (Cr)** | 0.20 max | Surface stability | | **Copper (Cu)** | 0.20 max | Minor alloying element | * **Precision Alloy Control:** The exact chemical composition is meticulously maintained throughout the forging process to ensure consistent thermal expansion characteristics and optimal mechanical properties in the final forged components. --- #### **2. Physical Properties** | Property | Value | | :--- | :--- | | **Density** | 8.10 g/cm³ | | **Melting Point** | 1430°C | | **Thermal Conductivity** | 15.2 W/m·K | | **Mean CTE (20-300°C)** | 5.0-6.0 × 10⁻⁶/°C | | **Specific Heat Capacity** | 450 J/kg·K | | **Electrical Resistivity** | 85 μΩ·cm | | **Modulus of Elasticity** | 155 GPa | | **Forging Temperature Range** | 1150-1250°C | --- #### **3. Mechanical Properties** | Property | Forged & Solution Treated | Forged & Precipitation Hardened | | :--- | :--- | :--- | | **Tensile Strength** | 90-110 ksi (621-758 MPa) | 190-230 ksi (1310-1586 MPa) | | **Yield Strength (0.2%)** | 55-75 ksi (379-517 MPa) | 180-210 ksi (1241-1448 MPa) | | **Elongation** | 20-30% | 8-12% | | **Reduction of Area** | 45-55% | 15-25% | | **Hardness** | HRB 95-105 | HRC 42-48 | | **Impact Toughness** | 35-55 ft-lb | 20-35 ft-lb | --- #### **4. Product Specifications & Applications** **Forging Capabilities:** - **Open Die Forgings:** Up to 1000 kg components - **Closed Die Forgings:** Complex geometries and near-net shapes - **Ring Rolled Forgings:** 150 mm to 2500 mm diameters - **Custom Shapes:** Manufacturer-specific designs and configurations **Primary Applications:** * **Aerospace & Defense:** - Aircraft engine mounts and structural components - Missile guidance system housings - Satellite structural elements and mounting platforms - Aircraft hydraulic system components * **Semiconductor Manufacturing:** - Wafer handling system structural parts - Vacuum chamber structural components - Etching equipment frames and bases - Lithography system mounting elements * **Precision Instrumentation:** - Laser system structural frames and mounts - Optical measuring equipment bases - Telescope mount components - Interferometer structural elements * **Energy Sector:** - Nuclear instrument housings and supports - Turbine components and mounting systems - Power generation equipment parts - Thermal management system elements **Specialized Applications:** - Cryogenic equipment structural components - Ultra-high vacuum system parts - High-temperature fixture elements - Precision manufacturing fixtures - Research equipment structural components --- #### **5. International Standards & Specifications** **Global Standards Compliance:** - **ASTM F30:** Standard Specification for Iron-Nickel-Cobalt Alloys - **ASTM B564:** Standard Specification for Nickel Alloy Forgings - **UNS K94680:** Unified Numbering System Designation - **AMS 7726:** Aerospace Material Specification - **MIL-DTL-23488:** Military Specification - **ISO 4950:** High Yield Strength Steel - **DIN 17471:** German Industrial Standard **Quality Specifications:** - **Forging Quality Levels:** Grade B, Class 1, 2, 3 available - **Non-Destructive Testing:** UT, RT, MT, PT as required - **Dimensional Inspection:** Per customer specifications - **Metallurgical Testing:** Grain flow verification and microstructural analysis - **Certification:** Comprehensive documentation package **Heat Treatment Specifications:** - **Solution Treatment:** 1650-1700°F (899-927°C) - **Aging Treatment:** 900°F (482°C) for 8 hours - **Cooling Rate:** Air cool or faster - **Atmosphere Control:** Protective atmosphere required --- #### **6. Technical Advantages & Processing Characteristics** **Manufacturing Benefits:** - **Superior Grain Structure:** Optimized directional strength properties through controlled grain flow - **Enhanced Mechanical Properties:** Improved fatigue and stress rupture life - **Elimination of Defects:** No internal voids or porosity - **Improved Reliability:** Consistent performance in critical applications - **Thermal Stability:** Maintains dimensional integrity under thermal cycling conditions **Quality Assurance Protocols:** - **Billet Conditioning:** Ultrasonic testing of starting material - **Process Control:** Monitoring of all forging parameters including temperature, strain rate, and deformation - **Heat Treatment:** Controlled solution annealing and aging processes - **Final Inspection:** Comprehensive verification of all requirements including dimensional, mechanical, and metallurgical properties **Machining & Fabrication:** - **Excellent Machinability:** Good tool life and surface finish in solution treated condition - **Weldability:** Compatible with standard welding processes using matching filler metals - **Stability:** Maintains dimensional accuracy after machining operations - **Consistency:** Uniform properties throughout forged components --- #### **Why Choose Our Alloy 43PH Forgings?** * **Premium Quality:** Strict control of forging parameters and thermal processing * **Enhanced Properties:** Superior mechanical characteristics through grain refinement * **Technical Expertise:** Comprehensive engineering support from design to production * **Quality Assurance:** Multiple NDT methods and full documentation * **Global Compliance:** Meets international standards and customer specifications * **Proven Reliability:** Extensive experience in critical applications **Value-Added Services:** - Custom forging design consultation - Complete machining capabilities - Heat treatment processing - Non-destructive testing services - Comprehensive certification packages **Contact our forging specialists** for technical consultation and quotation requirements. We provide complete solutions for your low expansion, high strength alloy forging needs, from initial design through final certification, ensuring the highest levels of quality and performance for your most demanding applications in aerospace, defense, energy, and precision instrumentation industries.

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 2777 gallon liquid totes Special package is available on request.