Alloy 301,Duranickel 301 Tube,,E FORU

British Specs:，American Specs:，German Specs:

**Technical Datasheet: Duranickel® 301 (UNS N03301) Tube** --- ### **Overview** Duranickel® 301 Tube (Alloy 301, UNS N03301) is a precipitation-hardenable nickel alloy tubing product that combines exceptional strength, excellent corrosion resistance, and superior mechanical properties in tubular form. This age-hardenable nickel alloy achieves the highest strength levels among commercial nickel alloys through proper heat treatment while maintaining outstanding performance in corrosive environments, making it ideal for precision tubing applications requiring high reliability and durability. --- ### **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, sulfur control | --- ### **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% - **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% - **Hardness**: HRC 36–44 --- ### **Temperature-Pressure Ratings** **Maximum Working Pressure (Age-Hardened Condition):** - **Room Temperature**: 690 bar (10,000 psi) - **315°C (600°F)**: 480 bar (7,000 psi) - **425°C (800°F)**: 345 bar (5,000 psi) **Service Temperature Range:** - **Minimum**: -196°C (-320°F) - **Maximum**: 480°C (900°F) continuous service --- ### **Product Applications** **Aerospace & Defense:** - Aircraft hydraulic systems - Fuel injection lines - Instrumentation tubing - Actuator pressure tubes - Engine control systems - Landing gear hydraulic lines **Marine & Offshore:** - Marine hydraulic systems - Instrumentation and control lines - Seawater cooling systems - Subsea control tubing - Naval vessel applications **Oil & Gas:** - Downhole instrumentation - Control and injection lines - Wellhead control systems - Pressure gauge tubing - Chemical injection lines **Chemical Processing:** - Instrumentation tubing - Sample lines - Process control systems - Corrosive fluid handling - Reactor instrumentation **Medical & Precision Instruments:** - Surgical instrument components - High-pressure medical devices - Analytical instrument tubing - Precision mechanical components --- ### **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 ammonia solutions - Suitable for mildly acidic environments --- ### **Fabrication Characteristics** **Welding:** - Gas Tungsten Arc Welding (GTAW) preferred - Use matching filler metal (ENiCu-7) - Solution anneal before welding age-hardened material - Post-weld age hardening required for maximum properties - Excellent weldability with proper procedures **Machining:** - Best machined in solution-annealed condition - Use positive rake angles and sharp tools - Recommended cutting speeds: 20–35 SFM - Use sulfur-free cutting fluids - Good chip control and surface finish **Forming and Bending:** - Cold bending possible in annealed condition - Minimum bend radius: 2× tube diameter - Heat treatment after severe forming recommended - Good springback characteristics - Suitable for flaring and flanging operations --- ### **International Standards** | Standard Organization | Standard Number | Description | |----------------------|-----------------|-------------| | **ASTM** | B622 | Standard Specification for Seamless Nickel and Nickel-Alloy Tube | | **ASTM** | B626 | Standard Specification for Welded Nickel and Nickel-Alloy Tube | | **ASME** | SB-622 | Code-approved version for pressure applications | | **ASME** | SB-626 | Code-approved welded tube specification | | **SAE** | AMS 5550 | Nickel Alloy, Seamless Tube - Age Hardenable | | **UNS** | N03301 | Unified Numbering System | | **ISO** | 6207 | Nickel alloy tubes for general purposes | --- ### **Available Specifications** **Tube Sizes:** - **Outside Diameter**: 1.5 mm to 100 mm (0.062" to 4") - **Wall Thickness**: 0.2 mm to 6.0 mm (0.008" to 0.250") - **Lengths**: Standard and custom lengths available **Manufacturing Methods:** - **Seamless**: Cold drawn, pilgered - **Welded**: GTAW welded, cold worked - **Temper Conditions**: Annealed, age-hardened **Surface Finish:** - Annealed and pickled - Bright annealed - Cold drawn finish - Special polished finishes available --- ### **Quality Assurance** - Hydrostatic testing per ASTM standards - Eddy current or ultrasonic examination - Dimensional verification - Chemical analysis certification - Mechanical property testing - Heat treatment certification - Surface quality inspection - EN 10204 3.1/3.2 certification available --- ### **Key Advantages** 1. **Highest Strength**: Maximum strength among nickel alloy tubes after age hardening 2. **Corrosion Resistance**: Superior to high-strength steel tubes in corrosive service 3. **Precision Manufacturing**: Tight dimensional tolerances 4. **Reliability**: Consistent properties and performance 5. **Temperature Stability**: Maintains properties at elevated temperatures --- **Notes:** - "Duranickel" is a registered trademark of Special Metals Corporation - Proper heat treatment is essential for achieving specified 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 2902 gallon liquid totes Special package is available on request.