Alloy 45,Low expansion 45 Alloy Other/Similar Specs,,E FORU

British Specs:，American Specs:，German Specs:

**PRODUCT DATASHEET: ALLOY 45 / LOW EXPANSION 45 ALLOY** **Other Forms & Similar Specifications** --- ### **1. OVERVIEW** **Alloy 45**, commercially known as **Low Expansion 45 Alloy**, represents a specialized category of **nickel-iron alloys** with precisely controlled **45% nickel content**, delivering a **thermal expansion coefficient** that bridges the gap between traditional low-expansion alloys and standard materials. This datasheet covers specialized forms, modified compositions, and equivalent materials that maintain the essential characteristics of controlled thermal expansion and mechanical performance. --- ### **2. CHEMICAL COMPOSITION VARIATIONS (Weight %)** | Element | Standard Alloy 45 | Modified Grade A | Modified Grade B | High-Strength Version | |------------------|-------------------|------------------|------------------|----------------------| | **Nickel (Ni)** | 44.0 – 46.0% | 43.5 – 45.5% | 45.0 – 46.5% | 44.5 – 45.5% | | **Iron (Fe)** | Balance | Balance | Balance | Balance | | **Manganese (Mn)**| 0.30 – 0.70% | 0.20 – 0.50% | 0.60 – 0.90% | 0.40 – 0.60% | | **Silicon (Si)** | 0.15 – 0.30% | 0.10 – 0.25% | 0.25 – 0.40% | 0.20 – 0.30% | | **Carbon (C)** | ≤ 0.05% | ≤ 0.03% | ≤ 0.07% | ≤ 0.04% | | **Chromium (Cr)**| ≤ 0.15% | ≤ 0.10% | 0.15 – 0.30% | ≤ 0.12% | | **Copper (Cu)** | ≤ 0.05% | 0.08 – 0.20% | ≤ 0.05% | ≤ 0.04% | | **Aluminum (Al)**| ≤ 0.05% | ≤ 0.03% | ≤ 0.07% | 0.10 – 0.25% | | **Sulfur (S)** | ≤ 0.015% | ≤ 0.010% | ≤ 0.020% | ≤ 0.012% | | **Phosphorus (P)**| ≤ 0.015% | ≤ 0.010% | ≤ 0.020% | ≤ 0.012% | --- ### **3. PHYSICAL & MECHANICAL PROPERTIES - COMPARATIVE** | Property | Standard Alloy 45 | Modified Grade A | Modified Grade B | High-Strength Version | |---------------------------------|-------------------|------------------|------------------|----------------------| | **CTE (20–300°C)** | 6.5 – 7.5 × 10⁻⁶/°C | 6.8 – 7.8 × 10⁻⁶/°C | 6.2 – 7.2 × 10⁻⁶/°C | 6.5 – 7.5 × 10⁻⁶/°C | | **Density (g/cm³)** | 8.17 | 8.16 | 8.18 | 8.17 | | **Tensile Strength (MPa)** | 550 – 650 | 500 – 600 | 600 – 700 | 650 – 800 | | **Yield Strength (MPa)** | 320 – 420 | 280 – 380 | 350 – 450 | 450 – 600 | | **Elongation (%)** | 25 – 35 | 30 – 40 | 20 – 30 | 15 – 25 | | **Hardness (HRB)** | 75 – 90 | 70 – 85 | 80 – 95 | 90 – 105 | | **Curie Temperature (°C)** | 380 | 370 | 390 | 380 | --- ### **4. INTERNATIONAL STANDARDS & GLOBAL EQUIVALENTS** | Region/Standard | Primary Equivalent | Alternative Designations | |-------------------|--------------------|--------------------------| | **Proprietary** | Alloy 45 | Nilo 45 | | **Custom** | Customer Specifications | - | | **European** | Similar to Ni45Fe | 1.3918 (similar) | | **Japanese** | Similar to C45N | NCF 45 (similar) | | **Chinese** | Similar to 4J45 | - | | **International** | Customer-specific | - | --- ### **5. SPECIALIZED PRODUCT FORMS** #### **5.1 Wire & Fine Wire Products** - **Diameter Range**: 0.05 mm to 6.0 mm - **Surface Finish**: Bright, coated, or plated - **Temper Conditions**: Annealed, 1/4 hard, 1/2 hard, hard - **Special Types**: Resistance welding wire, electronic lead wire #### **5.2 Powder & MIM Feedstock** - **Particle Size**: 5-45 μm for MIM applications - **Purity Level**: 99.5% minimum - **Binder Systems**: Custom formulations available - **Applications**: Small, complex shaped components #### **5.3 Clad & Composite Materials** - **Copper-Clad Alloy 45**: For enhanced electrical conductivity - **Stainless Steel Clad**: For improved corrosion resistance - **Multi-layer Composites**: Custom layer configurations - **Applications**: Electronic substrates, special connectors #### **5.4 Sputtering Targets** - **Purity**: 99.95% minimum - **Density**: ≥ 95% theoretical density - **Bonding**: Special bonding techniques available - **Applications**: Thin film deposition, specialized coatings --- ### **6. MODIFIED & ENHANCED GRADES** #### **6.1 High-Strength Variants** - **Precipitation Hardenable**: With titanium and aluminum additions - **Cold Worked Versions**: Enhanced strength through work hardening - **Micro-alloyed Grades**: With vanadium or niobium for grain refinement #### **6.2 Enhanced Machinability Grades** - **Sulfur-Modified**: Improved chip breaking and tool life - **Selenium-Modified**: Alternative to sulfur-modified versions - **Lead-Free Variants**: Environmentally friendly machining grades #### **6.3 Special Thermal Characteristics** - **Controlled-CTE Premium**: Tighter CTE control for critical applications - **Wide-Range Matching**: Optimized for broader temperature ranges - **Cryogenic Grades**: Enhanced low-temperature performance --- ### **7. SPECIAL APPLICATIONS & CONFIGURATIONS** #### **7.1 Composite Tooling Applications** - **Aerospace Molds**: Large composite curing tools - **Automotive Dies**: Precision forming and molding dies - **Industrial Tooling**: Jigs, fixtures, and measurement tools #### **7.2 Optical & Precision Instruments** - **Mirror Mounts**: Stable optical mounting systems - **Laser Components**: Precision laser system parts - **Measurement Equipment**: Dimensional measurement fixtures #### **7.3 Specialized Manufacturing** - **Wafer Carriers**: Specialized handling components - **Process Chamber Parts**: Custom processing equipment - **Mask Alignment**: Specialized alignment system components --- ### **8. QUALITY ASSURANCE & CERTIFICATION** #### **8.1 Standard Certifications** - **Material Certificates**: Customer-specific certification - **Quality Systems**: Customer quality requirements - **Industry Specific**: Custom industry standards #### **8.2 Special Testing Capabilities** - **CTE Measurement**: Precision dilatometer testing - **Surface Analysis**: SEM/EDS, surface roughness mapping - **Cleanliness Testing**: Particle count and contamination analysis - **Electrical Testing**: Resistivity and conductivity measurements --- ### **9. TECHNICAL NOTES & CONSIDERATIONS** #### **9.1 Thermal Processing Effects** - **Heat Treatment Impact**: Critical for CTE control - **Cooling Rate Effects**: Influence on final properties - **Aging Characteristics**: Long-term dimensional stability #### **9.2 Fabrication Guidelines** - **Machining Parameters**: Optimized speeds and feeds - **Welding Considerations**: Special procedures for different forms - **Surface Treatment**: Compatibility with various processes #### **9.3 Application-Specific Selection** - **CTE Matching**: Selection based on specific application requirements - **Strength Requirements**: Grade selection for mechanical demands - **Environmental Factors**: Corrosion resistance and temperature limits --- ### **10. GLOBAL SUPPLY CHAIN SUPPORT** - **Multiple Production Sites**: Flexible manufacturing facilities - **Local Stocking**: Custom inventory management - **Technical Support**: Application engineering support - **Custom Logistics**: Tailored delivery and inventory programs --- **Note:** The selection of specific Alloy 45 variants should be based on comprehensive application requirements including thermal, mechanical, and environmental factors. Consultation with our technical team is recommended for optimal material selection and processing guidance for specialized 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 2479 gallon liquid totes Special package is available on request.