Alloy 75,Nimonic 75 Bar(Round bar, Flat bar),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 Bar (Round Bar & Flat Bar) UNS N06075** **Alloy 75** (commercially known as **Nimonic 75**) bar products are nickel-chromium alloys supplied in both round and flat bar forms, designed for high-temperature applications requiring excellent oxidation resistance and good mechanical properties. These product forms are specifically engineered for manufacturing components that must maintain structural integrity and performance at elevated temperatures up to 950°C. --- #### **1. Chemical Composition** The chemical composition of Nimonic 75 bars 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 fabricability in both round and flat bar forms.* --- #### **2. Physical Properties** Nimonic 75 bars exhibit 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 | Round Bar | Flat Bar | |:---|:---|:---| | **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 | **Elevated Temperature Properties:** - **Maximum Service Temperature:** 950°C (1742°F) - **Creep Strength:** 100 MPa at 750°C (1382°F) - **Stress Rupture Strength:** 70 MPa for 100 hours at 815°C (1500°F) --- #### **4. Product Specifications** **Round Bar:** - **Diameter Range:** 3mm to 500mm (0.125" to 20") - **Length:** Standard 3-6 meters, custom lengths up to 12 meters - **Surface Condition:** Hot finished, cold drawn, turned, ground - **Tolerances:** ±0.1mm to ±1.0mm depending on diameter **Flat Bar:** - **Thickness:** 5mm to 150mm (0.187" to 6") - **Width:** 20mm to 300mm (0.75" to 12") - **Length:** Standard 3-6 meters, custom lengths available - **Edge Condition:** As-rolled, machined, or precision ground --- #### **5. Product Applications** **Round Bar Applications:** - **Shafts and Axles:** For high-temperature rotating equipment - **Fasteners:** High-temperature bolts, studs, and threaded rods - **Support Rods:** In furnace and heat treatment equipment - **Machined Components:** Basis for custom high-temperature parts - **Structural Elements:** In high-temperature assemblies **Flat Bar Applications:** - **Support Brackets:** For high-temperature equipment - **Structural Members:** In furnace construction - **Wear Strips:** For high-temperature sliding applications - **Machined Parts:** Base material for custom components - **Heat Exchanger Components:** Support bars and grids **Aerospace Industry:** - **Engine Mounting Components:** Brackets and support structures - **Exhaust System Parts:** Hangers and support elements - **Airframe Components:** High-temperature structural elements - **Auxiliary Power Units:** Structural and mounting components **Power Generation:** - **Gas Turbine Components:** Combustion chamber supports - **Heat Exchanger Parts:** Support structures and tie bars - **Boiler Components:** Hanger rods and support elements - **Nuclear Applications:** Non-critical structural components **Industrial Processing:** - **Heat Treatment Equipment:** Fixture components and support bars - **Furnace Construction:** Structural members and support elements - **Chemical Processing:** High-temperature reactor internals - **Glass Manufacturing:** Forming tools and handling equipment --- #### **6. International Standards** **Material Standards:** - **UNS N06075**: Unified Numbering System designation - **ASTM B637**: Standard for Precipitation-Hardening Nickel Alloy Bars - **AMS 5755**: Aerospace Material Specification - **BS HR 501**: British Standard - **DIN 2.4951**: German Industrial Standard **Industry Specifications:** - **ASME SB637**: ASME Boiler and Pressure Vessel Code - **ISO 9724**: Aerospace series standards - **EN 10095**: Heat resisting steels and nickel alloys **Quality Standards:** - **ASTM E8**: Standard Test Methods for Tension Testing - **ASTM E10**: Standard Test Method for Brinell Hardness - **ASTM E112**: Standard Test Methods for Determining Average Grain Size --- #### **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 properties **Aging Treatment (Optional):** - **Temperature:** 700-750°C (1290-1380°F) - **Time:** 8-16 hours, air cool - **Purpose:** To enhance mechanical properties for specific applications --- #### **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 Characteristics** **Machining:** - **Machinability Rating:** 40-50% (compared to 1212 steel) - **Tool Materials:** Carbide tools recommended - **Cutting Parameters:** Moderate speeds with positive rake angles - **Coolant Requirements:** Essential for optimum results **Welding:** - **Recommended Processes:** GTAW, GMAW - **Filler Metal:** AWS A5.14 ERNiCr-3 - **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 --- #### **10. Quality Assurance** **Testing & Certification:** - **Chemical Analysis:** Certified mill test reports - **Mechanical Testing:** Tensile, hardness tests - **High-Temperature Testing:** Stress rupture and creep tests as required - **Non-Destructive Testing:** UT, MT, PT as specified - **Dimensional Inspection:** To specified tolerances **Certification:** - **EN 10204 3.1/3.2**: Material inspection certificates - **Third-Party Inspection**: Available as required - **Traceability**: Full material history documentation --- #### **11. Key Advantages** * **Excellent High-Temperature Strength:** Maintains mechanical properties at elevated temperatures * **Superior Oxidation Resistance:** Outstanding performance up to 950°C * **Versatile Product Forms:** Available in round and flat bar configurations * **Good Fabricability:** Can be machined and welded using standard methods * **Proven Reliability:** Extensive service history in demanding applications * **Industry Compliance:** Meets major international standards * **Cost-Effective:** Economical solution for high-temperature applications * **Technical Support:** Comprehensive application engineering support Nimonic 75 round and flat bars provide engineers and manufacturers with reliable, high-performance material solutions for critical components operating in high-temperature environments, particularly in aerospace, power generation, and industrial heating applications where excellent oxidation resistance and maintained mechanical properties 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 2042 gallon liquid totes Special package is available on request.