Alloy 45,Low expansion 45 Alloy Plate,,E FORU

British Specs:，American Specs:，German Specs:

**PRODUCT DATASHEET: ALLOY 45 / LOW EXPANSION 45 ALLOY PLATE** **Plate Product Form** --- ### **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 structural materials. Supplied in **plate form**, this product provides excellent dimensional stability and thermal compatibility for applications requiring flat, stable surfaces with intermediate expansion characteristics. --- ### **2. CHEMICAL COMPOSITION (Weight %)** | Element | Alloy 45 Plate 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 | Typical Value (Annealed Condition) | |---------------------------------|-----------------------------------| | **Coefficient of Thermal Expansion** | 6.5 – 7.5 × 10⁻⁶/°C (20–300°C) | | **Density** | 8.17 g/cm³ | | **Melting Point** | 1425 – 1450°C | | **Tensile Strength** | 550 – 650 MPa | | **Yield Strength (0.2% Offset)**| 320 – 420 MPa | | **Elongation (in 2")** | 25 – 35% | | **Modulus of Elasticity** | 148 GPa | | **Hardness (Rockwell B)** | 75 – 90 HRB | | **Electrical Resistivity** | 0.80 μΩ·m | | **Thermal Conductivity** | 15.0 W/m·K | | **Curie Temperature** | 380°C | --- ### **4. INTERNATIONAL STANDARDS & EQUIVALENTS** | Standard Organization | Designation & Specification | |-----------------------|----------------------------| | **Proprietary** | Alloy 45, Nilo 45 | | **Custom Standards** | Customer-specific specifications | | **Similar Standards** | Based on ASTM A240 framework | | **European** | Similar to Ni45Fe series | | **Japanese** | Similar to C45N series | --- ### **5. PLATE SPECIFICATIONS** #### **5.1 Standard Plate** - **Thickness Range**: 3.0 mm to 40 mm - **Width Range**: 600 mm to 1200 mm - **Length Range**: 1200 mm to 2400 mm - **Thickness Tolerance**: ±0.15 mm to ±0.60 mm - **Flatness**: 4 mm per meter maximum #### **5.2 Precision Plate** - **Thickness Range**: 1.5 mm to 20 mm - **Width Range**: 400 mm to 800 mm - **Length Range**: 1000 mm to 2000 mm - **Thickness Tolerance**: ±0.08 mm to ±0.25 mm - **Flatness**: 2 mm per meter maximum #### **5.3 Surface Finish Options** - **Hot-Rolled**: Annealed and pickled finish - **Cold-Rolled**: Smooth matte finish - **Machined**: Precision machined surfaces - **Polished**: Various polish levels available --- ### **6. PRODUCT APPLICATIONS** #### **6.1 Electronics & Electrical** - **Specialized Lead Frame Bases**: Custom electronic packaging - **Hybrid Circuit Substrates**: Intermediate CTE applications - **Power Device Mounting Plates**: Thermal management solutions - **Electronic Package Bases**: Custom package platforms #### **6.2 Precision Instruments** - **Optical Mounting Plates**: Intermediate expansion applications - **Measuring Equipment Bases**: Coordinate measuring machines - **Laboratory Apparatus**: Scientific instrument platforms - **Metrology Standards**: Precision reference surfaces #### **6.3 Industrial Applications** - **Mold Bases**: Composite tooling with controlled expansion - **Fixture Plates**: Manufacturing jig and fixture bases - **Structural Components**: Precision machine frame elements - **Thermal Management**: Heat sink base plates #### **6.4 Specialized Applications** - **Transition Plates**: Bridging different CTE materials - **Compensation Plates**: Thermal stress management - **Calibration Platforms**: Metrology and testing equipment - **Research Equipment**: Custom scientific apparatus --- ### **7. MACHINING & FABRICATION** #### **7.1 Machining Characteristics** - **Machinability Rating**: 35% (compared to 1212 steel) - **Recommended Tools**: Carbide tools with positive rake angles - **Cutting Speeds**: 40-65 m/min for milling operations - **Feed Rates**: 0.15-0.35 mm/tooth for optimal finish - **Coolant**: Recommended for all machining operations #### **7.2 Forming & Welding** - **Bend Radius**: Minimum 2.5× thickness for 90° bends - **Punching**: Suitable for blanking and piercing operations - **Welding Methods**: GTAW (TIG), GMAW (MIG), laser welding - **Filler Metal**: Matching composition recommended #### **7.3 Heat Treatment** - **Annealing Temperature**: 800–900°C followed by controlled cooling - **Stress Relieving**: 550–650°C for 1–2 hours - **Atmosphere Control**: Protective atmosphere recommended - **Grain Size Control**: ASTM 5-8 for optimal properties --- ### **8. QUALITY ASSURANCE** #### **8.1 Material Certification** - **Chemical Analysis**: Certified spectrographic analysis - **Mechanical Testing**: Tensile and hardness certification - **Dimensional Report**: Full dimensional verification - **Surface Quality**: Per customer requirements #### **8.2 Testing & Inspection** - **Ultrasonic Testing**: For internal quality assessment - **Flatness Measurement**: Precision straightedge verification - **Surface Roughness**: Ra measurement per specification - **Visual Inspection**: 100% surface examination #### **8.3 Traceability & Documentation** - **Heat Number Tracking**: Full material history maintained - **Process Certificates**: Customer-specific certification - **Process Control Records**: Complete manufacturing documentation - **Custom Marking**: Customer-specific identification available --- ### **9. TECHNICAL ADVANTAGES** - **Controlled Thermal Expansion**: Intermediate CTE for specialized applications - **Superior Flatness**: Excellent dimensional stability - **Good Machinability**: Can be precision machined to tight tolerances - **Enhanced Mechanical Properties**: Better strength than lower nickel alloys - **Thermal Stability**: Consistent performance across temperature ranges - **Good Weldability**: Compatible with standard welding processes --- ### **10. PACKAGING & DELIVERY** #### **10.1 Standard Packaging** - **Individual Wrapping**: Protective paper or plastic wrapping - **Stacking**: Separated with protective interleaving - **Edge Protection**: Corner guards and edge protectors - **Wooden Crating**: For large or heavy plates #### **10.2 Special Requirements** - **Cleanroom Packaging**: Available for critical applications - **VCI Protection**: Volatile corrosion inhibitor packaging - **Custom Sizes**: Plasma or waterjet cut to customer patterns - **Just-in-Time Delivery**: Scheduled delivery programs --- **Note:** Alloy 45 plate is typically supplied against specific customer requirements. For applications requiring precise flatness or specific thermal expansion characteristics, consultation with our technical team is recommended. Stress relieving after rough machining is advised for components requiring dimensional stability. Material samples and technical data sheets available upon request.

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 2474 gallon liquid totes Special package is available on request.