Alloy N,Hastelloy N Bar(Round bar, Flat bar),UNS N10003,E FORU

British Specs:，American Specs: AMS 5771 Bar and Forging AMS 5607 Sheet, Strip and Plate，German Specs:

**Product Data Sheet: Alloy N / Hastelloy® N Bar (UNS N10003)** **Round Bar & Flat Bar - Nickel-Molybdenum-Chromium Alloy** --- ### **1. Product Overview** **Hastelloy® N Bar** (UNS N10003) is a nickel-molybdenum-chromium alloy available in both round and flat bar configurations, specifically engineered for high-temperature applications requiring exceptional resistance to molten fluoride salts and corrosive environments. These product forms combine excellent high-temperature strength with superior corrosion resistance, making them ideal for machining critical components in nuclear, chemical processing, and aerospace industries. --- ### **2. Chemical Composition (Typical % by Weight)** | Element | Content (%) | Function | |---------|-------------|----------| | Nickel (Ni) | Balance | Base element providing high-temperature strength and stability | | Molybdenum (Mo) | 15.0-18.0 | Enhances strength and corrosion resistance in reducing environments | | Chromium (Cr) | 6.0-8.0 | Provides oxidation resistance at high temperatures | | Iron (Fe) | 5.0 max | Controlled for optimal thermal stability | | Silicon (Si) | 1.0 max | Enhances oxidation resistance | | Manganese (Mn) | 0.80 max | Deoxidizer and process control | | Aluminum (Al) | 0.50 max | Improves oxidation resistance | | Carbon (C) | 0.04-0.08 | Optimizes high-temperature strength | | Cobalt (Co) | 0.20 max | Controlled impurity | | Boron (B) | 0.010 max | Controlled for nuclear applications | | Sulfur (S) | 0.015 max | Minimized to prevent hot cracking | --- ### **3. Physical & Mechanical Properties** | Property | Round Bar | Flat Bar | |----------|-----------|----------| | Density | 8.86 g/cm³ | 8.86 g/cm³ | | Melting Point | 1330-1360°C | 1330-1360°C | | Thermal Conductivity | 14.2 W/m·K | 14.2 W/m·K | | Coefficient of Thermal Expansion | 12.3 μm/m·K | 12.3 μm/m·K | | Modulus of Elasticity | 217 GPa | 217 GPa | | **Room Temperature Mechanical Properties** | | | | Tensile Strength | 690-895 MPa | 680-880 MPa | | Yield Strength (0.2% Offset) | 310-620 MPa | 300-600 MPa | | Elongation | 35-55% | 30-50% | | Hardness (Rockwell B) | 85-100 HRB | 80-95 HRB | | **760°C (1400°F) Mechanical Properties** | | | | Tensile Strength | 380-480 MPa | 370-460 MPa | | Yield Strength | 240-340 MPa | 230-330 MPa | --- ### **4. Product Applications** #### **4.1 Round Bar Applications** - **Nuclear Reactor Components**: Control rod drives, guide tubes - **Pump Shafts**: For molten salt and high-temperature chemical service - **Valve Stems**: High-temperature valve components - **Fastener Stock**: Material for high-temperature bolts and studs - **Machined Components**: Bushings, bearings, and precision parts #### **4.2 Flat Bar Applications** - **Structural Supports**: High-temperature furnace components - **Heat Exchanger Parts**: Support bars and structural elements - **Reactor Internals**: Baffles and support grids - **Bracket Fabrication**: Mounting components for high-temperature service - **Wear Strips**: Guide rails in high-temperature equipment #### **4.3 Cross-Industry Applications** - **Aerospace**: Rocket engine components, turbine parts - **Chemical Processing**: Reactor internals, mixer components - **Power Generation**: Turbine and boiler components - **Research Equipment**: Specialized high-temperature apparatus --- ### **5. Key Features & Benefits** - **Exceptional Molten Salt Resistance**: Superior performance in fluoride salt environments up to 815°C - **High-Temperature Capability**: Maintains mechanical properties up to 980°C - **Excellent Oxidation Resistance**: Outstanding performance in oxidizing atmospheres - **Good Fabricability**: Excellent machining and welding characteristics - **Thermal Stability**: Resists thermal aging and embrittlement - **Versatile Product Forms**: Available in round and flat configurations - **Consistent Quality**: Uniform properties throughout material cross-section - **Nuclear Grade**: Suitable for nuclear applications with proper certification --- ### **6. International Standards & Specifications** | Standard Type | Specification Number | Description | |---------------|----------------------|-------------| | ASTM | B335 | Standard Specification for Nickel Alloy Rod and Bar | | UNS | N10003 | Unified Numbering System Designation | | ASME | SB-335 | Code Case for Pressure Component Applications | | DIN | 2.4853 | Material Number and Specification | | EN | 2.4853 | European Standard Designation | | ISO | 9724 | Nickel Alloy Bars for General Purpose | --- ### **7. Product Specifications** #### **7.1 Round Bar Specifications** - **Diameter Range**: 3.0 mm to 300 mm (0.125" to 12") - **Length**: Standard 3-6 meters; custom lengths available - **Diameter Tolerance**: ±0.1 mm to ±0.5% depending on diameter - **Straightness**: ≤1 mm per meter for precision applications - **Surface Finish**: Turned, ground, or polished finishes #### **7.2 Flat Bar Specifications** - **Thickness**: 3.0 mm to 100 mm (0.125" to 4") - **Width**: 10 mm to 300 mm (0.4" to 12") - **Length**: Standard 3-6 meters; custom lengths available - **Thickness Tolerance**: ±0.1 mm to ±0.5% depending on thickness - **Width Tolerance**: ±0.5 mm to ±1.0% depending on width #### **7.3 Available Conditions** - **Solution Annealed**: Optimal corrosion resistance and machinability - **Hot Finished**: For larger sizes and specific applications - **Cold Finished**: Improved surface finish and dimensional accuracy - **Special Tempers**: Various strength levels available upon request --- ### **8. Fabrication & Processing Guidelines** #### **8.1 Machining Recommendations** - **Cutting Tools**: Use carbide tools with positive rake angles - **Cutting Speeds**: 20-35 m/min for rough machining, 30-45 m/min for finishing - **Feed Rates**: Moderate feeds with adequate cooling - **Coolants**: Use sulfur-free cutting fluids for optimal results - **Tool Geometry**: Sharp cutting edges with adequate clearance angles #### **8.2 Welding & Joining** - **Welding Methods**: GTAW (TIG) preferred for critical applications - **Filler Metals**: Use matching composition filler metals - **Preheating**: Generally not required - **Interpass Temperature**: Maintain below 150°C (300°F) - **Post-Weld Heat Treatment**: Stress relief at 870-900°C recommended #### **8.3 Heat Treatment** - **Solution Annealing**: 1150-1200°C (2100-2190°F) followed by rapid cooling - **Stress Relieving**: 870-900°C (1600-1650°F) for dimensional stability - **Annealing Atmosphere**: Use protective atmosphere to prevent oxidation --- ### **9. Quality Assurance & Certification** - **Material Certification**: EN 10204 3.1/3.2 with full traceability - **Testing Protocols**: Mechanical testing, chemical analysis, high-temperature testing - **Non-Destructive Testing**: UT, MT, PT available as required - **Nuclear Certification**: NQA-1 compliance available for nuclear applications - **Certifications**: ISO 9001, ASME, NORSOK compliance - **Documentation**: Certified Mill Test Reports with complete material properties --- **Disclaimer**: The technical information provided represents typical values and is for reference purposes. Actual properties may vary based on manufacturing process, bar size, and heat treatment condition. Users must verify suitability for specific applications through appropriate testing and consult with technical experts for critical applications, particularly in nuclear service. Hastelloy® is a registered trademark of Haynes International. Compliance with all applicable safety standards, codes, and regulations is mandatory.

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 2874 gallon liquid totes Special package is available on request.