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

British Specs:，American Specs:，German Specs:

### **Product Introduction: Alloy 43PH / Low Expansion 43PH Alloy Strip** **Precision Cold-Rolled Strip for High-Strength Miniature Components** **Alloy 43PH Strip** is a precision cold-rolled precipitation-hardenable iron-nickel-cobalt alloy specifically engineered for applications requiring exceptional dimensional stability, controlled thermal expansion, and high mechanical strength in thin-gauge form. This advanced material combines the superior thermal characteristics of Alloy 43PH with precise dimensional control needed for high-volume manufacturing of miniature electronic components, precision instruments, and medical devices. --- #### **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 Alloy Design:** The optimized nickel-cobalt balance ensures consistent low thermal expansion characteristics, while titanium and aluminum enable precipitation hardening for enhanced mechanical properties in strip form. --- #### **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 | Annealed (Soft) | 1/4 Hard | 1/2 Hard | Full Hard | | :--- | :--- | :--- | :--- | :--- | | **Tensile Strength (ksi)** | 85-100 | 100-120 | 120-150 | 150-180 | | **Yield Strength (ksi)** | 50-65 | 75-95 | 100-125 | 140-165 | | **Elongation (%)** | 25-35 | 15-25 | 8-15 | 5-10 | | **Hardness (HRB)** | 90-100 | 100-105 | 105-110 | 110-115 | | **Vickers Hardness (HV)** | 180-220 | 220-280 | 280-340 | 340-400 | --- #### **4. Product Specifications & Applications** **Strip Specifications:** - **Thickness Range:** 0.001" to 0.060" (0.025mm to 1.52mm) - **Width Range:** 0.125" to 12" (3.17mm to 304.8mm) - **Coil Weight:** 100 lbs to 2000 lbs (45 kg to 900 kg) - **Tolerance:** ±0.0001" thickness, ±0.002" width - **Edge Condition:** Slit edge, round edge, or custom profiles **Primary Applications:** * **Electronics & Semiconductor:** - IC lead frames and terminals - Semiconductor package components - Connector pins and contacts - Hybrid circuit substrates * **Medical Devices:** - Surgical instrument components - Implantable device parts - Medical sensor elements - Diagnostic equipment components * **Aerospace & Defense:** - Avionics component leads - Guidance system parts - Satellite electronic components - Miniature connector elements * **Precision Instruments:** - Spring contacts and connectors - Miniature relay components - Sensor elements - Measuring device components **Specialized Strip Applications:** - High-speed stamped sealing components - Precision etched circuit elements - Multi-slide formed parts - Progressive die stamped assemblies - Fine blanked precision 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 - **DIN 17471:** German Industrial Standard - **JIS C2532:** Japanese Industrial Standard **Quality Specifications:** - **Dimensional Standards:** ASTM A480 compliant - **Tolerance Grades:** Precision and Ultra-Precision available - **Surface Quality:** No. 1, 2B, BA, or custom finishes - **Flatness Standards:** Standard, Precision, or Ultra-Flat - **Certification:** EN 10204 3.1/3.2 with full traceability **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 operations - **Photochemical Etching:** Suitable for complex micro-patterns - **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 Strip?** * **Premium Quality Control:** Strict control of chemical composition and microstructure * **Precision Manufacturing:** Exceptional thickness control and dimensional accuracy * **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 temper development - Heat treatment processing - Special surface treatments - Protective packaging solutions **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 strip 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 2775 gallon liquid totes Special package is available on request.