Nickel 201,ASME SB-160 - SB-163, ，1

### Technical Datasheet: Nickel 201 (UNS N02201) **Classification:** Low Carbon Commercially Pure Wrought Nickel **Specifications:** ASME SB-160, SB-161, SB-162, SB-163 **UNS Designation:** N02201 --- #### 1.0 Introduction **Nickel 201** is a low-carbon version of commercially pure wrought nickel (99.6% minimum nickel content) specifically designed for elevated temperature applications. With a maximum carbon content of 0.02%, this alloy **eliminates the risk of graphitization and embrittlement** at temperatures above 600°F (315°C), making it suitable for long-term service up to 1250°F (675°C). Nickel 201 maintains all the beneficial properties of Nickel 200 while providing enhanced thermal stability for high-temperature applications. --- #### 2.0 Chemical Composition (Weight %) | Element | Minimum | Maximum | Typical Value | |---------|---------|---------|---------------| | **Nickel (Ni)** | 99.0 | Balance | 99.6 | | **Copper (Cu)** | - | 0.25 | 0.15 | | **Iron (Fe)** | - | 0.40 | 0.20 | | **Manganese (Mn)** | - | 0.35 | 0.20 | | **Carbon (C)** | - | 0.02 | 0.01 | | **Silicon (Si)** | - | 0.35 | 0.20 | | **Sulfur (S)** | - | 0.01 | 0.005 | | **Other Elements** | - | 0.50 | 0.20 | *Key Difference: Maximum 0.02% carbon content prevents graphite precipitation at elevated temperatures* --- #### 3.0 Physical Properties | Property | Value | Condition/Notes | |----------|-------|-----------------| | **Density** | 8.89 g/cm³ (0.321 lb/in³) | At room temperature | | **Melting Point** | 1435-1445°C (2615-2633°F) | - | | **Thermal Expansion Coefficient** | 13.3 μm/m·°C | 20-100°C | | **Thermal Conductivity** | 70 W/m·K | At 100°C | | **Electrical Resistivity** | 0.95 μΩ·m | At 20°C | | **Modulus of Elasticity** | 204 GPa (29.6×10⁶ psi) | At room temperature | | **Magnetic Response** | Essentially non-magnetic | Below Curie point (353°C/667°F) | --- #### 4.0 Mechanical Properties **4.1 Typical Room Temperature Properties (Annealed Condition):** - **Tensile Strength**: 380-550 MPa (55-80 ksi) - **Yield Strength (0.2% Offset)**: 100-250 MPa (15-36 ksi) - **Elongation**: 40-55% - **Hardness**: 65-85 HRB **4.2 Elevated Temperature Properties:** | Temperature | Tensile Strength | Yield Strength (0.2% Offset) | |-------------|------------------|-----------------------------| | 315°C (600°F) | 330 MPa (48 ksi) | 83 MPa (12 ksi) | | 540°C (1000°F) | 230 MPa (33 ksi) | 62 MPa (9 ksi) | | 675°C (1250°F) | 150 MPa (22 ksi) | 55 MPa (8 ksi) | --- #### 5.0 Corrosion Resistance **5.1 Key Features:** - Excellent resistance to corrosion by caustic alkalis (all concentrations up to boiling point) - Outstanding performance in chloride stress corrosion cracking environments - Good resistance to neutral and alkaline salt solutions - Excellent resistance to distilled water, natural fresh water, and seawater - Good performance in dry chlorine and hydrogen chloride gas **5.2 Superior Applications:** - High-temperature caustic environments - Continuous service above 315°C (600°F) - Applications requiring long-term thermal stability - Equipment handling molten caustic alkalis --- #### 6.0 Applications **6.1 Chemical Processing:** - Caustic evaporation tubes and equipment - Equipment for manufacturing and handling caustic soda - Chemical shipping drums - Reaction vessels for chemical processes **6.2 High-Temperature Applications:** - Heat exchanger tubing - Furnace components - Electronic and aerospace components - High-temperature instrumentation **6.3 Food & Pharmaceutical:** - Food processing equipment - Pharmaceutical production equipment - Food handling machinery - Structural members in processing plants **6.4 Other Applications:** - Aerospace and missile components - Production of synthetic fibers - Marine engineering components - Electrical resistance heating elements --- #### 7.0 Fabrication & Processing **7.1 Heat Treatment:** - **Annealing Temperature**: 705-925°C (1300-1700°F) - **Stress Relieving**: 425-650°C (800-1200°F) - **Cooling**: Air cool or water quench - **Hot Working**: 650-1230°C (1200-2250°F) **7.2 Welding:** - Excellent weldability by all standard processes - Gas tungsten arc welding (GTAW) recommended - Use Nickel 201 filler metal for best results - No post-weld heat treatment required **7.3 Machining:** - Similar machining characteristics to Nickel 200 - Use positive rake angles and rigid setups - Recommended tools: High-speed steel or carbide - Use sulfur-free cutting fluids --- #### 8.0 International Standards & Specifications **ASME/ASTM Material Specifications:** | Product Form | ASME/ASTM Standard | Description | |--------------|---------------------|-------------| | **Rod & Bar** | ASME SB-160 / ASTM B160 | Nickel Rod and Bar | | **Plate, Sheet, Strip** | ASME SB-162 / ASTM B162 | Nickel Plate, Sheet, and Strip | | **Seamless Pipe & Tube** | ASME SB-161 / ASTM B161 | Nickel Seamless Pipe and Tube | | **Welded Pipe** | ASME SB-163 / ASTM B163 | Nickel Seamless Condenser and Heat-Exchanger Tubes | **Additional International Standards:** - **UNS**: N02201 - **DIN**: 2.4061 - **EN**: NW 2201 - **ISO**: NW 2201 - **AMS**: 7233 (Wire) - **EN 10095**: Heat resisting steels and nickel alloys --- #### 9.0 Quality Assurance & Testing **Standard Testing Requirements:** - Chemical analysis verification - Mechanical property testing - Non-destructive testing (as required) - Hydrostatic testing (for pressure applications) - Microstructural examination - Intergranular corrosion testing (when specified) --- **Note:** Nickel 201 is the preferred choice for applications requiring continuous service above 315°C (600°F) due to its low carbon content that prevents embrittlement. For applications below 315°C, Nickel 200 may be more cost-effective. Always consult relevant ASME codes and standards for specific application requirements and limitations. The material shows excellent performance in caustic environments and is widely used in the chemical processing industry.

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 3286 gallon liquid totes Special package is available on request.