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

British Specs:，American Specs:，German Specs:

### **Product Introduction: Alloy 43PH / Low Expansion 43PH Alloy Plate** **Premium Plate Stock for High-Strength Precision Applications** **Alloy 43PH Plate** is a specialized precipitation-hardenable iron-nickel-cobalt alloy plate engineered to deliver exceptional dimensional stability combined with superior mechanical strength in structural applications. This advanced material maintains excellent low thermal expansion characteristics while achieving remarkable strength properties through controlled precipitation hardening heat treatment, making it ideal for precision instruments, aerospace components, and semiconductor equipment where both thermal stability and structural integrity are critical. --- #### **1. Chemical Composition (Weight %)** | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | 42.0 - 43.0 | | **Cobalt (Co)** | 5.0 - 6.0 | | **Titanium (Ti)** | 2.0 - 2.5 | | **Aluminum (Al)** | 0.5 - 0.8 | | **Iron (Fe)** | Balance | | **Manganese (Mn)** | 0.50 max | | **Silicon (Si)** | 0.30 max | | **Carbon (C)** | 0.05 max | | **Chromium (Cr)** | 0.20 max | | **Copper (Cu)** | 0.20 max | * **Advanced Formulation:** The precise balance of nickel and cobalt ensures minimal thermal expansion, while titanium and aluminum enable precipitation hardening for enhanced mechanical properties in plate applications. --- #### **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 | | **Curie Temperature** | 250°C | --- #### **3. Mechanical Properties** | Property | Solution Treated | Precipitation Hardened | | :--- | :--- | :--- | | **Tensile Strength** | 85-105 ksi (586-724 MPa) | 180-220 ksi (1241-1517 MPa) | | **Yield Strength (0.2%)** | 50-70 ksi (345-483 MPa) | 170-200 ksi (1172-1379 MPa) | | **Elongation** | 25-35% | 10-15% | | **Hardness** | HRB 90-100 | HRC 38-44 | | **Flatness Tolerance** | 0.010" per inch | 0.005" per inch | --- #### **4. Product Specifications & Applications** **Plate Specifications:** - **Thickness Range:** 0.010" to 4.000" (0.25mm to 101.6mm) - **Width Range:** 12" to 48" (304.8mm to 1219.2mm) - **Length Range:** 24" to 144" (609.6mm to 3657.6mm) - **Surface Finish:** 2B, No. 1, or customized finishes - **Flatness:** Commercial or precision grades available **Primary Applications:** * **Aerospace & Defense:** - Satellite structural platforms - Missile guidance system mounts - Aircraft structural components - Avionics mounting platforms * **Semiconductor Manufacturing:** - Wafer stage mounting plates - Lithography equipment bases - Vacuum chamber platforms - Inspection system mounting plates * **Precision Instrumentation:** - Laser system base plates - Optical mounting platforms - Coordinate measuring machine tables - Metrology equipment structures * **Medical Technology:** - Medical imaging system components - Surgical instrument bases - Diagnostic equipment platforms - Medical device enclosures **Specialized Applications:** - Cryogenic equipment structural plates - High-temperature fixture bases - Optical table substrates - Thermal management platforms - Research apparatus components --- #### **5. International Standards & Specifications** **Global Standards Compliance:** - **ASTM F30:** Standard Specification for Iron-Nickel-Cobalt Alloys - **UNS K94680:** Unified Numbering System Designation - **AMS 7726:** Aerospace Material Specification - **MIL-DTL-23488:** Military Specification - **ISO 4950:** High Yield Strength Steel Plates - **DIN 17471:** German Industrial Standard - **JIS C2532:** Japanese Industrial Standard **Quality Specifications:** - **Thickness Tolerance:** ±0.001" to ±0.015" - **Flatness Standards:** ASTM A480 compliant - **Surface Quality:** No. 1 finish standard - **Dimensional Stability:** Controlled through thermal processing - **Certification:** EN 10204 3.1/3.2 available **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 recommended --- #### **6. Technical Advantages & Processing Characteristics** **Manufacturing Benefits:** - **Exceptional Thermal Stability:** Maintains dimensional integrity under thermal cycling - **High Strength-to-Weight Ratio:** Superior mechanical properties - **Excellent Machinability:** Good in solution treated condition - **Good Weldability:** Compatible with standard welding techniques - **Corrosion Resistance:** Suitable for most industrial environments **Processing Guidelines:** - **Machining:** Use sharp tools with positive rake angles - **Heat Treatment:** Stress relieve after heavy machining - **Surface Grinding:** Suitable for precision surface finishing - **Forming:** Good cold working characteristics - **Cleaning:** Avoid chloride-containing solutions **Quality Assurance:** - **Chemical Analysis:** Complete material certification - **Mechanical Testing:** Verification of all specified properties - **Flatness Verification:** Precision measurement capabilities - **Surface Inspection:** Comprehensive quality examination - **Traceability:** Full material history documentation --- #### **Why Choose Our Alloy 43PH Plate?** * **Premium Quality:** Strict control of chemical composition and microstructure * **Precision Manufacturing:** Excellent flatness and dimensional accuracy * **Technical Expertise:** Comprehensive application support and guidance * **Quality Assurance:** Full certification and traceability * **Global Compliance:** Meets international standards and specifications * **Proven Reliability:** Extensive track record in critical applications **Value-Added Services:** - Precision cutting to size - Surface grinding and finishing - Heat treatment processing - Custom machining services - Comprehensive certification packages **Contact our technical team** for detailed specifications, application engineering support, and material selection guidance. We provide complete solutions for your low expansion, high strength alloy plate requirements, ensuring optimal performance in your most demanding precision engineering 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 2773 gallon liquid totes Special package is available on request.