Alloy 75,Nimonic 75 ,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 (UNS N06075)** **Alloy 75** (commercially known as **Nimonic 75**) is a nickel-chromium alloy with additions of titanium and iron, designed for high-temperature applications requiring excellent oxidation resistance and good mechanical properties. As one of the earliest developed nickel-based superalloys, it maintains reliable performance at temperatures up to 950°C while offering good fabricability and weldability. --- #### **1. Chemical Composition** The chemical composition of Nimonic 75 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 stability.* --- #### **2. Physical Properties** Nimonic 75 exhibits the following 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** **Typical Mechanical Properties at Room Temperature (Annealed Condition):** | Property | Value | |:---|:---| | **Tensile Strength** | 690 MPa (100 ksi) | | **Yield Strength (0.2% Offset)** | 310 MPa (45 ksi) | | **Elongation** | 45% | | **Reduction of Area** | 60% | | **Hardness** | 85 HRB | **Elevated Temperature Properties:** - **Maximum Service Temperature:** 950°C (1742°F) - **Creep Strength:** 100 MPa at 750°C (1382°F) - **Stress Rupture:** 100 hours at 815°C (1500°F) under 70 MPa stress --- #### **4. Product Applications** **Aerospace Industry:** - **Gas Turbine Components:** Combustion chambers, flame tubes - **Exhaust Systems:** Nozzles, liners, and ducting - **Afterburner Components:** Structural supports and liners - **Rocket Motor Components:** Nozzles and thrust chambers **Power Generation:** - **Gas Turbine Parts:** Combustion cans and transition pieces - **Heat Treatment Equipment:** Furnace components and fixtures - **Boiler Components:** Superheater supports and hangers - **Nuclear Components:** Non-critical high-temperature parts **Industrial Processing:** - **Heat Treatment Furnaces:** Retorts, muffles, and radiant tubes - **Chemical Processing:** High-temperature reaction vessels - **Glass Manufacturing:** Forming molds and handling equipment - **Ceramic Industry:** Kiln furniture and support structures **Automotive Industry:** - **Turbocharger Components:** Housings and heat shields - **Exhaust Systems:** High-performance vehicle components - **Racing Engines:** Heat-resistant brackets and mounts --- #### **5. International Standards** **Material Standards:** - **UNS N06075**: Unified Numbering System designation - **ASTM B637**: Standard for Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock - **AMS 5755**: Aerospace Material Specification - **BS HR 501**: British Standard - **DIN 2.4951**: German Industrial Standard **International Equivalents:** - **EN 10095**: NiCr20TiAl (European Standard) - **JIS NCF 75**: Japanese Industrial Standard - **GB GH3030**: Chinese National Standard **Industry Specifications:** - **ASME SB637**: ASME Boiler and Pressure Vessel Code - **ISO 9724**: Aerospace series standards - **PrEN 10095**: Heat resisting steels and nickel alloys --- #### **6. Heat Treatment** **Solution Annealing:** - **Temperature:** 1150-1180°C (2100-2150°F) - **Cooling:** Rapid air cool or water quench - **Purpose:** To dissolve precipitated phases and optimize properties **Aging Treatment:** - **Temperature:** 700-750°C (1290-1380°F) - **Time:** 8-16 hours, air cool - **Purpose:** To achieve optimal mechanical properties --- #### **7. 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) - **Intermittent Service Temperature:** Up to 1000°C (1832°F) - **Oxidation Rate:** <0.1 mm/year at 900°C (1652°F) --- #### **8. Fabrication Characteristics** **Machining:** - **Machinability Rating:** 40-50% (compared to 1212 steel) - **Tool Materials:** Carbide tools recommended - **Cutting Speeds:** Moderate with positive rake angles - **Coolant Requirements:** Essential for optimum tool life **Welding:** - **Recommended Processes:** GTAW, GMAW, SMAW - **Filler Metals:** AWS A5.14 ERNiCr-3 or matching composition - **Preheat:** Generally not required - **Post-Weld Heat Treatment:** Recommended for critical applications **Forming:** - **Cold Working:** Good formability in annealed condition - **Hot Working:** Temperature range 1050-1200°C - **Annealing:** Required after severe cold working --- #### **9. Key Advantages** * **Excellent Oxidation Resistance:** Superior performance at high temperatures up to 950°C * **Good Mechanical Properties:** Maintains strength at elevated temperatures * **Proven Reliability:** Extensive service history in demanding applications * **Good Fabricability:** Can be welded and formed using standard methods * **Cost-Effective:** Economical solution for high-temperature applications * **Industry Acceptance:** Recognized by major international standards * **Versatile Applications:** Suitable for various high-temperature environments --- #### **10. Quality Assurance** **Testing & Certification:** - **Chemical Analysis:** Certified to specified limits - **Mechanical Testing:** Tensile, hardness, and creep tests - **High-Temperature Testing:** Stress rupture and creep performance - **Non-Destructive Testing:** UT, PT, MT as specified - **Certification:** EN 10204 3.1/3.2 material certificates Nimonic 75 represents a reliable and cost-effective nickel-chromium alloy solution for high-temperature applications requiring excellent oxidation resistance and good mechanical properties, particularly in aerospace, power generation, and industrial heating applications where proven performance and reliability are essential.

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 2040 gallon liquid totes Special package is available on request.