ASTM B161 Nickel 201 (UNS N02201) Alloy Pipe
ASTM B161 Nickel 201 (UNS N02201) seamless pipes are produced from a low-carbon, commercially pure wrought nickel alloy designed for enhanced performance at elevated temperatures. The reduced carbon content prevents embrittlement, making Nickel 201 ideal for environments above 315°C. These pipes provide outstanding resistance to caustic alkalis, reducing chemicals, neutral salts, and a wide range of corrosive media. Known for superior thermal conductivity, ductility, and formability, ASTM B161 Nickel 201 pipes are extensively used in chemical processing, food handling, petrochemical, marine, and high-temperature industrial applications.
Key Features
- Low carbon variant of Nickel 200 for improved high-temperature performance
- Excellent resistance to caustic and alkaline environments
- Highly resistant to reducing chemicals and neutral salts
- Superior thermal and electrical conductivity
- High ductility and formability
- Non-magnetic and corrosion-resistant
- Ideal for service above 315°C to avoid graphitization
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | N02201 |
| W.Nr. | 2.4061 |
| JIS | NW 2201 |
| BS | NA 11 |
| GOST | НП-2 |
ASTM B161 Nickel 201 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | 99.0 min |
| Copper (Cu) | 0.25 max |
| Iron (Fe) | 0.40 max |
| Manganese (Mn) | 0.35 max |
| Carbon (C) | 0.02 max |
| Silicon (Si) | 0.35 max |
| Sulfur (S) | 0.01 max |
ASTM B161 UNS N02201 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 372 MPa (54 ksi) min |
| Yield Strength (0.2%) | 103 MPa (15 ksi) min |
| Elongation | 40% min |
| Hardness | Rb 55 max |
Grade Nickel 201 (UNS N02201) Physical Properties
| Property | Value |
|---|---|
| Density | 8.89 g/cm³ |
| Melting Range | 1435 – 1446°C |
| Thermal Conductivity | 66.5 W/m·K |
| Electrical Resistivity | 0.099 µΩ·m |
| Specific Heat | 0.444 J/g·°C |
| Modulus of Elasticity | 207 GPa |
Type of Nickel 201 UNS N02201 Pipes
- Nickel 201 Seamless Pipes
- Nickel 201 Seamless Tubes
- Heat Exchanger Tubes
- Instrumentation Tubes
- Annealed Tubes
- Cold Worked Tubes
Applications
- Chemical processing & caustic service
- Sodium hydroxide production
- Food processing equipment
- Marine and desalination systems
- Petrochemical components
- Heat exchangers & condensers
- High-temperature furnace equipment
- Power generation & nuclear applications
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