Alloy 75,Nimonic 75 Tube,UNS N06075,E FORU

British Specs:BS HR5 Alloy 75 Bar BS HR203 Alloy 75 sheet BS HR403 Alloy 75 tube* BS HR504 Alloy 75 Bar (rivet)，American Specs:，German Specs:WS 2.4630 WS 2.4951,AFNOR NC 20T

### **Product Datasheet: Alloy 75 / Nimonic 75 Tube (UNS N06075)** **Alloy 75** (commercially known as **Nimonic 75**) tube is a nickel-chromium alloy manufactured in tubular form, specifically designed for high-temperature heat exchangers, boilers, and other thermal processing applications requiring excellent oxidation resistance and reliable performance at elevated temperatures up to 950°C. --- #### **1. Chemical Composition** The chemical composition of Nimonic 75 tube is precisely controlled to ensure optimal high-temperature performance: | Element | Content (%) | |:---|:---| | **Nickel (Ni)** | Balance | | **Chromium (Cr)** | 18.0 - 21.0 | | **Iron (Fe)** | 3.0 - 5.0 | | **Titanium (Ti)** | 0.2 - 0.6 | | **Carbon (C)** | 0.08 - 0.15 | | **Manganese (Mn)** | 1.0 max | | **Silicon (Si)** | 1.0 max | | **Copper (Cu)** | 0.5 max | | **Sulfur (S)** | 0.015 max | *Note: The balanced composition provides excellent oxidation resistance through chromium content while maintaining good high-temperature strength and thermal stability in tubular applications.* --- #### **2. Physical Properties** Nimonic 75 tube exhibits consistent physical properties: | Property | Value | |:---|:---| | **Density** | 8.31 g/cm³ (0.300 lb/in³) | | **Melting Range** | 1380 - 1425°C (2516 - 2597°F) | | **Coefficient of Thermal Expansion** | 14.5 × 10⁻⁶/°C (20-100°C) | | **Thermal Conductivity** | 12.0 W/m·K (at 100°C) | | **Specific Heat** | 460 J/kg·K (at 100°C) | | **Modulus of Elasticity** | 214 GPa (31 × 10⁶ psi) | | **Electrical Resistivity** | 1.12 μΩ·m | | **Magnetic Permeability** | <1.01 (essentially non-magnetic) | --- #### **3. Mechanical Properties** **Standard Mechanical Properties (Solution Annealed Condition):** | Property | Seamless Tube | Welded Tube | |:---|:---|:---| | **Tensile Strength** | 690 MPa (100 ksi) min | 660 MPa (96 ksi) min | | **Yield Strength (0.2% Offset)** | 310 MPa (45 ksi) min | 290 MPa (42 ksi) min | | **Elongation** | 45% min | 40% min | | **Hardness** | 85 HRB max | 85 HRB max | **Pressure Performance:** - **Maximum Working Pressure:** Varies with tube size and wall thickness - **Burst Pressure:** Typically 3-4 × working pressure - **Temperature Range:** Up to 950°C (1742°F) - **Creep Strength:** 100 MPa at 750°C (1382°F) --- #### **4. Product Specifications** **Available Forms:** - **Seamless Tube:** OD 1/8" to 6" (3.2mm to 152.4mm) - **Welded Tube:** OD 1/8" to 4" (3.2mm to 101.6mm) - **Wall Thickness:** 0.5mm to 12mm (0.020" to 0.472") - **Lengths:** Standard up to 20 feet, custom lengths available **Tube Types & Sizes:** - **Heat Exchanger Tubes:** To ASTM/ASME specifications - **Boiler Tubes:** Various wall thicknesses and diameters - **Instrumentation Tubing:** Small diameters with precise tolerances - **Mechanical Tubing:** For structural and mechanical applications --- #### **5. Product Applications** **Heat Exchanger Applications:** - **Shell and Tube Heat Exchangers:** For high-temperature service - **Waste Heat Boilers:** Recovering energy from high-temperature streams - **Air Preheaters:** Heating combustion air in industrial furnaces - **Radiant Tubes:** In heat treatment furnaces - **Superheater Tubes:** In steam generation systems **Aerospace Industry:** - **Gas Turbine Components:** Combustion chamber liners - **Heat Exchanger Tubes:** In aircraft environmental control systems - **Hydraulic Lines:** High-temperature hydraulic fluid transport - **Fuel System Components:** Fuel heating and transfer tubes **Power Generation:** - **Boiler Tubes:** In conventional and nuclear power plants - **Heat Recovery Steam Generators:** In combined cycle plants - **Superheater Tubes:** High-pressure steam systems - **Feedwater Heaters:** High-temperature preheating stages **Industrial Processing:** - **Heat Treatment Furnaces:** Radiant tubes and retorts - **Chemical Processing:** High-temperature reactor coils - **Glass Manufacturing:** Annealing lehr rolls and components - **Petrochemical:** Reformer and cracking furnace tubes --- #### **6. International Standards** **Material & Manufacturing Standards:** - **UNS N06075**: Unified Numbering System designation - **ASTM B622**: Standard for Seamless Pipe and Tube - **ASTM B619**: Standard for Welded Pipe - **ASTM B626**: Standard for Welded Tube - **ASME SB622/SB619**: ASME Boiler and Pressure Vessel Code **Dimensional Standards:** - **ASTM B751**: General Requirements for Tubes - **ASME B36.19**: Stainless Steel and Nickel Alloy Tube - **TEMA Standards**: Tubular Exchanger Manufacturers Association **Testing & Inspection:** - **ASTM E213**: Ultrasonic Testing - **ASTM E309**: Eddy Current Testing - **ASTM E426**: Electromagnetic (Eddy Current) Testing - **Hydrostatic Testing**: Per applicable code requirements --- #### **7. Heat Treatment** **Solution Annealing:** - **Temperature Range:** 1150-1180°C (2100-2150°F) - **Cooling Method:** Rapid air cool or water quench - **Purpose:** To dissolve precipitated phases and optimize high-temperature properties **Stress Relieving:** - **Temperature:** 850-900°C (1560-1650°F) - **Time:** 1-2 hours per inch of thickness - **Purpose:** To relieve fabrication stresses --- #### **8. Oxidation & Corrosion Resistance** **Excellent Performance In:** - **High-Temperature Oxidation:** Up to 950°C continuous service - **Sulfur-Containing Atmospheres:** Good resistance to sulfidation - **Carburizing Environments:** Moderate resistance - **Thermal Cycling:** Good resistance to thermal fatigue **Oxidation Performance Data:** - **Continuous Service Temperature:** Up to 950°C (1742°F) - **Oxidation Rate:** <0.1 mm/year at 900°C (1652°F) - **Scale Adherence:** Excellent, with protective chromia scale --- #### **9. Fabrication & Installation** **Tube Expansion:** - **Maximum Expansion:** 8% of tube wall thickness per pass - **Lubrication:** Recommended for heavy wall tubes - **Sequencing:** Proper expansion pattern to minimize stress **Tube Bending:** - **Minimum Bend Radius:** 2 × OD for thin wall tubes - **Bending Methods:** Mandrel, compression, or roll bending - **Hot Bending:** Recommended for tight radius bends **Welding & Joining:** - **Tube-to-Tubesheet Welding:** GTAW process recommended - **Filler Metal:** AWS A5.14 ERNiCr-3 - **Welding Positions:** All positions achievable - **Quality Requirements:** Per applicable code requirements --- #### **10. Quality Assurance** **Testing & Certification:** - **Chemical Analysis:** Certified mill test reports - **Mechanical Testing:** Tensile, hardness, flattening, flaring - **Non-Destructive Testing:** UT, ET, RT, PT as specified - **Surface Inspection:** Visual and dimensional checks **Quality Control Processes:** - **Raw Material Control:** Verified chemical composition - **Process Control:** Monitored manufacturing parameters - **Final Inspection:** Comprehensive quality verification - **Traceability:** Complete documentation from melt to final product --- #### **11. Key Advantages** * **Excellent High-Temperature Strength:** Maintains mechanical properties at elevated temperatures * **Superior Oxidation Resistance:** Outstanding performance up to 950°C * **Good Thermal Conductivity:** Efficient heat transfer characteristics * **Excellent Fabricability:** Suitable for various manufacturing processes * **Long Service Life:** Reduced maintenance and replacement frequency * **Industry Compliance:** Meets major international standards * **Proven Reliability:** Extensive service history in demanding applications Nimonic 75 tube offers exceptional performance for high-temperature heat transfer applications, providing reliable service in aerospace, power generation, and industrial processing industries where both excellent oxidation resistance and thermal performance are essential requirements.

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 2044 gallon liquid totes Special package is available on request.