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

British Specs:，American Specs:，German Specs:

### **Product Introduction: Alloy 43PH / Low Expansion 43PH Alloy Sheet** **Precision Thin-Gauge Material for High-Strength Thermal Management Applications** **Alloy 43PH Sheet** is a specialized precipitation-hardenable iron-nickel-cobalt alloy in sheet form, engineered to provide exceptional dimensional stability combined with superior mechanical strength in thin-section 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 electronic packaging, aerospace components, and precision instruments 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 | * **Precision Formulation:** The optimized nickel-cobalt balance ensures minimal thermal expansion, while titanium and aluminum additions enable precipitation hardening for enhanced mechanical properties in thin sheet 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** | < 2 mm/m | < 1 mm/m | --- #### **4. Product Specifications & Applications** **Sheet Specifications:** - **Thickness Range:** 0.002" to 0.125" (0.05mm to 3.18mm) - **Width Range:** 6" to 36" (152mm to 914mm) - **Length Range:** 12" to 96" (305mm to 2438mm) - **Surface Finish:** Bright annealed, 2B, BA finishes - **Tolerance:** ±0.0001" to ±0.005" (thickness dependent) **Primary Applications:** * **Aerospace & Defense:** - Aircraft structural panels - Satellite instrument mounts - Missile guidance system components - Avionics enclosure panels * **Electronics & Semiconductor:** - IC package substrates and lids - Power device enclosures - RF microwave packages - Hybrid circuit bases * **Precision Instrumentation:** - Laser system components - Optical mounting platforms - Measuring equipment structures - Sensor mounting elements * **Medical Technology:** - Medical instrument housings - Surgical device components - Diagnostic equipment shields - Implantable device encapsulation **Specialized Applications:** - Thin-profile structural seals - Precision stamped components - Multi-layer assemblies - Thermal management substrates - High-strength electronic packages --- #### **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:** ASTM A480 compliant - **Surface Quality:** No. 1, 2B, or custom finishes - **Flatness Standards:** Commercial and precision grades - **Dimensional Stability:** Controlled through thermal processing - **Certification:** EN 10204 3.1/3.2 material certificates **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:** - **Excellent Formability:** Superior deep drawing and bending capabilities - **High Strength-to-Weight Ratio:** Exceptional mechanical properties - **Thermal Stability:** Maintains dimensional integrity under thermal cycling - **Good Weldability:** Compatible with standard welding techniques - **Corrosion Resistance:** Suitable for most industrial environments **Processing Guidelines:** - **Stamping:** Excellent for high-speed precision stamping - **Photochemical Etching:** Suitable for complex geometries - **Heat Treatment:** Critical for achieving optimal properties - **Surface Treatment:** Compatible with various plating processes - **Cleaning:** Avoid chloride-containing solutions **Quality Assurance:** - **Chemical Analysis:** Complete material certification - **Mechanical Testing:** Verification of all specified properties - **Dimensional Inspection:** Precision measurement capabilities - **Surface Examination:** Comprehensive quality assessment - **Flatness Verification:** Laser-based measurement systems --- #### **Why Choose Our Alloy 43PH Sheet?** * **Premium Quality Control:** Strict control of chemical composition and microstructure * **Precision Manufacturing:** Exceptional thickness uniformity and surface quality * **Technical Expertise:** Comprehensive application support and guidance * **Quality Assurance:** Full traceability with certified documentation * **Global Compliance:** Meets international standards and specifications * **Proven Reliability:** Extensive track record in critical applications **Value-Added Services:** - Precision slitting to custom widths - Custom blanking and shearing - Heat treatment processing - Surface finishing treatments - Comprehensive testing services **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 sheet 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 2774 gallon liquid totes Special package is available on request.