Alloy 45,Low expansion 45 Alloy Fittings,,E FORU

British Specs:，American Specs:，German Specs:

**PRODUCT DATASHEET: ALLOY 45 / LOW EXPANSION 45 ALLOY FITTINGS** **Precision Fittings & Components** --- ### **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 fitting materials. Manufactured as **precision fittings**, these components ensure reliable thermal compatibility and dimensional stability in piping systems requiring intermediate expansion characteristics with excellent pressure integrity. --- ### **2. CHEMICAL COMPOSITION (Weight %)** | Element | Alloy 45 Fittings 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) | |---------------------------------|--------------------------| | **CTE (20–300°C)** | 6.5 – 7.5 × 10⁻⁶/°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 | | **Pressure Rating** | Schedule 40/80 compatible | --- ### **4. INTERNATIONAL STANDARDS & EQUIVALENTS** | Standard Organization | Designation & Specification | |-----------------------|----------------------------| | **Proprietary** | Alloy 45, Nilo 45 | | **Custom Standards** | Customer-specific specifications | | **Similar Standards** | Based on ASTM B366 framework | | **European** | Similar to Ni45Fe series | | **Japanese** | Similar to C45N series | --- ### **5. FITTING TYPES & SPECIFICATIONS** #### **5.1 Butt-Weld Fittings** - **Elbows**: 45°, 90°, 180° (1/8" to 8" NPS) - **Tees**: Equal and reducing (1/8" to 8" NPS) - **Reducers**: Concentric and eccentric (1/8" to 8" NPS) - **Caps**: Pipe caps and closures (1/8" to 8" NPS) #### **5.2 Socket-Weld Fittings** - **Couplings**: Socket weld couplings (1/8" to 2" NPS) - **Unions**: Socket weld unions (1/8" to 2" NPS) - **Elbows**: 45° and 90° socket weld (1/8" to 2" NPS) - **Tees**: Socket weld tees (1/8" to 2" NPS) #### **5.3 Special Fittings** - **Instrumentation Fittings**: Metric and imperial sizes - **Vacuum Fittings**: High-vacuum compatible designs - **Transition Fittings**: Between different CTE materials - **Custom Components**: Customer-specific designs --- ### **6. PRODUCT APPLICATIONS** #### **6.1 Thermal Management Systems** - **Heat Exchanger Fittings**: Intermediate expansion applications - **Thermal Cycling Systems**: Controlled expansion requirements - **Temperature Control Lines**: Process temperature management - **Heat Transfer Systems**: Custom thermal system components #### **6.2 Semiconductor & Electronics** - **Process Gas Systems**: Specialized gas distribution fittings - **Coolant System Components**: Electronic cooling applications - **Vacuum System Fittings**: Intermediate expansion requirements - **Specialized Instrumentation**: Custom process system fittings #### **6.3 Research & Laboratory** - **Analytical Instrument Fittings**: Research equipment systems - **Laboratory Gas Systems**: Specialized research applications - **Cryogenic System Fittings**: Intermediate temperature applications - **Scientific Apparatus**: Custom research equipment components #### **6.4 Industrial Applications** - **Precision Process Systems**: Controlled expansion process lines - **Compensation Loops**: Thermal stress management fittings - **Transition Sections**: Between different CTE materials - **Specialized Fluid Handling**: Corrosive or high-purity applications --- ### **7. TECHNICAL SPECIFICATIONS** #### **7.1 Size Range & Pressure Ratings** - **Pipe Size**: 1/8" to 8" NPS (DN6 to DN200) - **Wall Thickness**: Schedule 5S to Schedule 80 - **Pressure Class**: 150# to 900# - **Temperature Rating**: -150°C to 450°C #### **7.2 Manufacturing Standards** - **Dimensional**: Based on ASME B16.9, B16.11, B16.28 - **Tolerance**: Customer-specified tolerances - **Testing**: Hydrostatic, pneumatic, NDT testing available - **Certification**: Customer-specific requirements #### **7.3 Material Condition** - **Solution Annealed**: 800-900°C, controlled cooling - **Stress Relieved**: 550-650°C, stress relief treatment - **Surface Finish**: Pickled, passivated, or mechanically finished - **Marking**: Customer-specified identification --- ### **8. FABRICATION & INSTALLATION** #### **8.1 Machining & Processing** - **Machinability**: Good with proper tools and techniques - **Cutting Speed**: Moderate with adequate cooling - **Tool Material**: Carbide or high-speed steel recommended - **Surface Finish**: Can be precision machined to specifications #### **8.2 Welding Procedures** - **Welding Process**: GTAW (TIG) recommended for critical applications - **Filler Metal**: Matching composition or nickel-based alloys - **Shielding Gas**: Argon or argon/helium mixtures - **Preheat/Postheat**: Generally not required for standard sections #### **8.3 Quality Control** - **Dimensional Inspection**: 100% verification to specifications - **Surface Examination**: Visual and liquid penetrant testing - **Pressure Testing**: Hydrostatic testing per requirements - **Documentation**: Complete certification package provided --- ### **9. QUALITY ASSURANCE** #### **9.1 Material Certification** - **Chemical Analysis**: Certified spectrographic analysis - **Mechanical Testing**: Tensile and hardness certification - **Metallurgical Tests**: Grain size and microstructure examination - **Traceability**: Full material history from melt to finished part #### **9.2 Testing & Inspection** - **Non-Destructive Testing**: RT, UT, MT, PT as required - **Pressure Testing**: Hydrostatic and pneumatic testing - **Leak Testing**: Helium leak detection for vacuum applications - **Dimensional Verification**: First article and production inspection #### **9.3 Compliance & Certification** - **Quality Systems**: Customer-specific quality requirements - **Material Certificates**: Customer-specified certification - **Testing Standards**: Customer-defined testing protocols - **Documentation**: Complete quality records maintained --- ### **10. TECHNICAL ADVANTAGES** - **Controlled Thermal Expansion**: Intermediate CTE for specialized applications - **Excellent Pressure Integrity**: Suitable for various pressure applications - **Good Corrosion Resistance**: Suitable for most industrial environments - **Superior Dimensional Stability**: Maintains precision across temperature ranges - **Good Weldability**: Compatible with standard welding methods - **Customizable Designs**: Tailored to specific application requirements --- **Note:** Alloy 45 fittings are typically supplied against specific customer requirements. For applications involving high pressure, extreme temperatures, or specialized services, consultation with our technical team is essential. Custom testing and certification available to meet specific application requirements. Prototype development services offered for new 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 2477 gallon liquid totes Special package is available on request.