Alloy 301,Duranickel 301 Bar(Round bar, Flat bar),,E FORU

British Specs:，American Specs:，German Specs:

**Technical Datasheet: Duranickel® 301 (UNS N03301) Bar - Round Bar & Flat Bar** --- ### **Overview** Duranickel® 301 Bar (Alloy 301, UNS N03301) is a premium precipitation-hardenable nickel alloy available in both round bar and flat bar forms. This age-hardenable alloy achieves exceptional strength levels through heat treatment while maintaining excellent corrosion resistance and mechanical properties at elevated temperatures. The combination of high strength, good ductility, and superior corrosion resistance makes it ideal for demanding structural applications across various industries. --- ### **Chemical Composition (Weight %)** | Element | Content (%) | Role | |---------|-------------|------| | Nickel (Ni) | 93.0–96.0 | Base element, provides corrosion resistance | | Titanium (Ti) | 4.0–5.0 | Primary age-hardening element | | Aluminum (Al) | 0.5–1.0 | Secondary hardening element | | Carbon (C) | ≤0.30 | Strength enhancement | | Manganese (Mn) | ≤0.50 | Improves hot workability | | Silicon (Si) | ≤0.50 | Deoxidizer | | Iron (Fe) | ≤0.50 | Residual element | | Sulfur (S) | ≤0.015 | Controlled impurity | | Magnesium (Mg) | 0.10–0.20 | Grain refinement, improves hot workability | --- ### **Physical Properties** | Property | Value | |----------|-------| | Density | 8.20 g/cm³ (0.296 lb/in³) | | Melting Point | 1440°C (2620°F) | | Thermal Conductivity | 29.7 W/m·K (at 20°C) | | Coefficient of Thermal Expansion | 13.5 μm/m·°C (20–100°C) | | Specific Heat Capacity | 460 J/kg·K | | Electrical Resistivity | 0.75 μΩ·m | | Modulus of Elasticity | 186 GPa (27×10⁶ psi) | | Magnetic Permeability | <1.002 (effectively non-magnetic) | --- ### **Mechanical Properties** **Solution Annealed Condition:** - **Tensile Strength**: 620–760 MPa (90–110 ksi) - **Yield Strength (0.2% Offset)**: 240–380 MPa (35–55 ksi) - **Elongation**: 25–35% - **Reduction of Area**: 40–60% - **Hardness**: HRB 85–95 **Age-Hardened Condition:** - **Tensile Strength**: 1240–1520 MPa (180–220 ksi) - **Yield Strength (0.2% Offset)**: 1030–1380 MPa (150–200 ksi) - **Elongation**: 10–20% - **Reduction of Area**: 25–40% - **Hardness**: HRC 36–44 --- ### **Heat Treatment** **Solution Annealing:** - Temperature: 870–980°C (1600–1800°F) - Soaking time: 30 minutes per inch of thickness - Cooling: Rapid water quench **Age Hardening:** - Temperature: 595–620°C (1100–1150°F) - Time: 12–16 hours at temperature - Cooling: Air cool to room temperature --- ### **Product Applications** **Round Bar Applications:** - High-strength shafts and axles - Valve stems and pump rods - Aircraft fasteners and bolts - Marine propeller shafts - Oil well drilling components - Structural members in corrosive environments **Flat Bar Applications:** - Structural supports and brackets - Machine tool components - Processing equipment frames - Electrical industry components - Marine construction elements - Chemical processing fixtures **Industry-Specific Applications:** - **Aerospace**: Landing gear components, engine mounts, structural fittings - **Marine**: Shafting, rudder stocks, fasteners, submarine components - **Oil & Gas**: Valve trim, pump parts, drilling equipment - **Chemical Processing**: Mixer shafts, agitators, reactor components - **Power Generation**: Turbine blades, fasteners, structural parts --- ### **Corrosion Resistance** - Excellent resistance to seawater and marine atmospheres - Good performance in fresh water, steam, and alkaline environments - Superior corrosion resistance compared to high-strength steels - Resistance to stress corrosion cracking - Good performance in caustic soda and other alkaline solutions --- ### **Fabrication Characteristics** **Machining:** - Best machined in solution-annealed condition - Use positive rake angles and sharp tools - Recommended cutting speeds: 25–45 SFM for turning operations - Use sulfur-free cutting fluids - Rigid tooling and workpiece support essential **Welding:** - Gas Tungsten Arc Welding (GTAW) recommended - Use matching filler metal (ENiCu-7) - Solution anneal before welding age-hardened material - Post-weld heat treatment required for maximum properties - Good weldability with proper procedures **Forming and Hot Working:** - Hot working temperature: 870–1175°C (1600–2150°F) - Cold forming should be done in annealed condition - Intermediate annealing may be required for severe deformation - Good malleability and formability in annealed state --- ### **International Standards** | Standard Organization | Standard Number | Description | |----------------------|-----------------|-------------| | **ASTM** | B865 | Standard Specification for Age-Hardening Nickel Alloy Bars, Forgings, and Forging Stock | | **ASME** | SB-865 | Code-approved version for pressure components | | **SAE** | AMS 5545 | Nickel Alloy, Bars, Forgings, and Rings - Solution Heat Treated | | **SAE** | AMS 5546 | Nickel Alloy, Bars, Forgings, and Rings - Age Hardened | | **UNS** | N03301 | Unified Numbering System | | **ISO** | 9724 | Nickel alloy bars for high-strength applications | | **DIN** | 17750 | Nickel alloy rod and bar specifications | --- ### **Available Product Forms** **Round Bar:** - Diameters: 3 mm to 300 mm (0.125" to 12") - Lengths: 3–6 meters (10–20 feet), custom lengths available - Surface finish: Turned, ground, polished, or as-forged **Flat Bar:** - Thickness: 3 mm to 100 mm (0.125" to 4") - Width: 10 mm to 300 mm (0.375" to 12") - Lengths: Standard and custom lengths available - Edges: Square, rounded, or beveled --- ### **Quality Assurance** - Complete traceability from melt to finished product - Chemical composition certification - Mechanical property testing reports - Ultrasonic testing available - Dimensional verification certificates - EN 10204 3.1/3.2 certification upon request - Compliance with industry standards and customer specifications --- ### **Key Advantages** 1. **Exceptional Strength**: Highest strength among commercial nickel alloys after age hardening 2. **Corrosion Resistance**: Superior performance in corrosive environments compared to steels 3. **Reliability**: Consistent mechanical properties and performance 4. **Versatility**: Suitable for both round bar and flat bar applications 5. **Temperature Capability**: Maintains properties at moderately elevated temperatures --- **Notes:** - "Duranickel" is a registered trademark of Special Metals Corporation - Proper heat treatment is essential for achieving optimal properties - Store in clean, dry conditions to prevent surface contamination - Consult technical experts for specific application requirements *For detailed technical assistance and application engineering support, contact materials engineering specialists.*

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 2900 gallon liquid totes Special package is available on request.