Alloy 45,Low expansion 45 Alloy Strip,,E FORU

British Specs:，American Specs:，German Specs:

**PRODUCT DATASHEET: ALLOY 45 / LOW EXPANSION 45 ALLOY STRIP** **Precision Strip Product** --- ### **1. OVERVIEW** **Alloy 45**, commercially known as **Low Expansion 45 Alloy**, is a specialized **nickel-iron alloy** containing **45% nickel** that delivers a **controlled coefficient of thermal expansion (CTE)** between traditional low-expansion alloys and standard strip materials. Supplied as **precision strip**, this product offers exceptional dimensional stability and formability for high-volume manufacturing of precision components requiring intermediate thermal expansion characteristics. --- ### **2. CHEMICAL COMPOSITION (Weight %)** | Element | Alloy 45 Strip Specification | Typical Range | |------------------|------------------------------|---------------| | **Nickel (Ni)** | 44.0 – 46.0% | 44.5 – 45.5% | | **Iron (Fe)** | Balance | Balance | | **Manganese (Mn)**| 0.30 – 0.70% | 0.40 – 0.60% | | **Silicon (Si)** | 0.15 – 0.30% | 0.20 – 0.25% | | **Carbon (C)** | ≤ 0.05% | ≤ 0.03% | | **Chromium (Cr)**| ≤ 0.15% | ≤ 0.10% | | **Copper (Cu)** | ≤ 0.05% | ≤ 0.03% | | **Aluminum (Al)**| ≤ 0.05% | ≤ 0.03% | | **Sulfur (S)** | ≤ 0.015% | ≤ 0.010% | | **Phosphorus (P)**| ≤ 0.015% | ≤ 0.010% | --- ### **3. PHYSICAL & MECHANICAL PROPERTIES** | Property | Annealed Condition | Half-Hard Condition | |---------------------------------|--------------------|---------------------| | **CTE (20–300°C)** | 6.5 – 7.5 × 10⁻⁶/°C | 6.5 – 7.5 × 10⁻⁶/°C | | **Density (g/cm³)** | 8.17 | 8.17 | | **Tensile Strength (MPa)** | 460 – 560 | 560 – 660 | | **Yield Strength (MPa)** | 260 – 360 | 460 – 560 | | **Elongation (in 2")** | 30 – 40% | 10 – 20% | | **Hardness (Rockwell B)** | 65 – 80 HRB | 82 – 95 HRB | | **Electrical Resistivity** | 0.80 μΩ·m | 0.80 μΩ·m | | **Thermal Conductivity** | 15.0 W/m·K | 15.0 W/m·K | | **Modulus of Elasticity** | 148 GPa | 148 GPa | --- ### **4. INTERNATIONAL STANDARDS & EQUIVALENTS** | Standard Organization | Designation & Specification | |-----------------------|----------------------------| | **Proprietary** | Alloy 45, Nilo 45 | | **Custom Standards** | Customer-specific specifications | | **Similar Standards** | Based on ASTM B749 framework | | **European** | Similar to Ni45Fe series | | **Japanese** | Similar to C45N series | --- ### **5. STRIP SPECIFICATIONS** #### **5.1 Dimensional Range** - **Thickness**: 0.05 mm to 2.0 mm (±0.002 mm to ±0.02 mm) - **Width**: 2.0 mm to 500 mm (±0.02 mm to ±0.15 mm) - **Length**: Coils up to 5000 meters, cut lengths available - **Camber**: ≤ 1 mm per 2 meters #### **5.2 Temper Conditions** - **Annealed (Soft)**: Optimal for severe forming and deep drawing - **Quarter-Hard**: Good formability with moderate strength - **Half-Hard**: Balanced formability and spring properties - **Hard**: Maximum strength for spring applications #### **5.3 Surface Finish** - **Standard Matte**: Ra 0.4-0.8 μm - **Bright Annealed**: Ra 0.1-0.3 μm - **Skin-Passed**: Improved flatness and surface texture - **Special Finish**: Custom surface treatments available --- ### **6. PRODUCT APPLICATIONS** #### **6.1 Electronics & Electrical** - **Specialized Lead Frames**: Custom IC and component packaging - **Electronic Connectors**: Intermediate CTE connector components - **Hybrid Circuit Elements**: Custom circuit substrate applications - **Sensor Components**: Precision sensing element substrates #### **6.2 Automotive Electronics** - **Sensor Elements**: Automotive sensor component strips - **ECU Components**: Electronic control unit internal parts - **Ignition System Parts**: Custom ignition component strips - **Power Electronics**: Specialized power device substrates #### **6.3 Precision Instruments** - **Instrument Components**: Precision mechanism parts - **Measuring Device Elements**: Dimensional measurement components - **Optical System Parts**: Intermediate expansion optical components - **Control Device Elements**: Precision control system parts #### **6.4 Industrial Applications** - **Thermal Management**: Heat spreader component strips - **Compensation Elements**: Thermal stress management strips - **Transition Components**: CTE bridging applications - **Precision Mechanism Parts**: Timing and control device components --- ### **7. PROCESSING CHARACTERISTICS** #### **7.1 Stamping & Blanking** - **Fine Blanking**: Suitable for precision components - **Tool Clearance**: 6-9% of material thickness - **Burr Height**: Controlled to ≤ 0.02 mm - **Production Rates**: Suitable for high-speed stamping #### **7.2 Forming & Deep Drawing** - **Deep Drawing**: Good in annealed condition - **Bend Radius**: Minimum 0.5× thickness - **Springback**: Predictable and consistent - **Work Hardening**: Moderate rate #### **7.3 Etching & Chemical Processing** - **Photoetching**: Suitable for precision etched components - **Etch Factor**: Typically 1:1 to 1:1.5 - **Etchants**: Compatible with standard etching chemicals - **Tolerance**: ±0.01 mm for etched features --- ### **8. QUALITY ASSURANCE** #### **8.1 Dimensional Control** - **Thickness Monitoring**: Laser gauge continuous monitoring - **Width Control**: Precision slitting with edge monitoring - **Flatness**: Controlled to ≤ 3 mm/m - **Surface Quality**: 100% visual inspection for critical grades #### **8.2 Material Testing** - **Chemical Analysis**: Certified for each melt heat - **Mechanical Testing**: Regular tensile and hardness verification - **Surface Roughness**: Controlled per specification requirements - **Grain Size**: ASTM 6-8 for optimal formability #### **8.3 Certification** - **Material Certificates**: Customer-specific certification - **Traceability**: Complete lot traceability maintained - **Process Control**: Statistical process control implemented - **Custom Testing**: Application-specific testing available --- ### **9. TECHNICAL ADVANTAGES** - **Controlled Thermal Expansion**: Intermediate CTE for specialized applications - **Excellent Formability**: Suitable for high-speed stamping and forming - **Superior Surface Quality**: Ideal for precision electronic applications - **Consistent Properties**: Reliable performance in volume production - **Good Weldability**: Compatible with resistance and laser welding - **Thermal Stability**: Maintains dimensions across temperature ranges --- ### **10. PACKAGING & DELIVERY** #### **10.1 Standard Packaging** - **Coil Packaging**: Wooden or steel reels with edge protection - **Width Protection**: Custom spacers for precision widths - **Surface Protection**: VCI paper and plastic wrapping - **Identification**: Continuous marking with specifications #### **10.2 Special Requirements** - **Cleanroom Packaging**: Available for critical applications - **ESD Protection**: Anti-static packaging materials - **Dry Atmosphere**: Nitrogen purging for sensitive applications - **Just-in-Time**: Scheduled delivery programs --- **Note:** Alloy 45 strip is typically supplied against specific customer requirements. For high-volume precision stamping applications, technical consultation is recommended to optimize material selection and processing parameters. Sample material and technical support available for process development and tooling design.

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 2476 gallon liquid totes Special package is available on request.