Products Description
Nickel 200 and Nickel 201 are both pure nickel alloys that offer excellent corrosion resistance in various environments. Here are some key points about Nickel 200 and Nickel 201:Corrosion Resistance:These alloys exhibit outstanding corrosion resistance to caustic soda (sodium hydroxide) and other alkalis.They perform best in reducing environments, where they offer excellent resistance to corrosion.In oxidizing conditions, a passive oxide film can form on the surface of the alloys, providing additional corrosion protection.Applications:Nickel 200 and Nickel 201 find applications in a wide range of industries, including aerospace, chemical and petrochemical processing, food processing, and marine and water treatment.These alloys are commonly used in equipment such as heat exchangers, valves, pumps, tanks, and piping systems in these industries.Ductility and Fabrication:Both Nickel 200 and Nickel 201 are highly ductile across a wide temperature range.They can be easily welded and processed using standard shop fabrication practices, making them convenient for manufacturing and assembly.It's important to note that while Nickel 200 and Nickel 201 offer good corrosion resistance, they may not be suitable for highly oxidizing or high-temperature environments. Consulting with materials engineers or alloy manufacturers is recommended to determine the best choice for a specific application and to ensure proper alloy selection and compatibility with the intended environment.
Applications
- Aerospace and Missile Components
- Chemical and Petrochemical Processing—chlor-alkali production, caustic soda and other alkalis; sulfuric, hydrochloric, hydrofluoric, phosphoric, and organic acids; neutral and reducing salt solutions; reactive chlorides including phosphorus oxychloride, phosphorus trichloride, nitrosyl chloride, benzyl chloride, and benzoyl chloride; fluorine and chlorine; bromine and phenol
- Food Processing Equipment— cooling brine, fatty acids, fruit juices
- Marine and Water Treatment— distilled, natural water and flowing seawater
Standards
ASTM..................B 162ASME..................SB 162
General Properties
Nickel 200 (UNS N02200) and 201 (UNS N02201) are dual-certifiable wrought nickel materials. They differ only in the maximum carbon levels present—0.15% for Nickel 200 and 0.02% for Nickel 201.
Nickel 200 plate is normally limited to service at temperatures below 600ºF (315ºC), since at higher temperatures it can suffer from graphitization which can severely compromise properties. At higher temperatures Nickel 201 plate should be utilized. Both grades are approved under ASME Boiler and Pressure Vessel Code Section VIII, Division 1. Nickel 200 plate is approved for service up to 600ºF (315ºC), while Nickel 201 plate is approved up to 1250ºF (677ºC).
Both grades offer outstanding corrosion resistance to caustic soda and other alkalis. The alloys perform best in reducing environments but can also be used under oxidizing conditions that produce a passive oxide film. They both resist corrosion by distilled, natural water and flowing seawater but are attacked by stagnant seawater.
Nickel 200 and 201 are ferromagnetic and exhibit highly ductile mechanical properties across a wide temperature range.
Both grades are easily welded and processed by standard shop fabrication practices.
Chemical Analysis
Weight % (all values are maximum unless a range is otherwise indicated)
Element |
Nickel 200 |
Nickel 201 |
Nickel (plus Cobalt) |
99.0 minimum |
99.0 minimum |
Copper |
0.25 |
0.25 |
Iron |
0.40 |
0.40 |
Manganese |
0.35 |
0.35 |
Carbon |
0.15 |
0.02 |
Silicon |
0.35 |
0.35 |
Sulfur |
0.01 |
0.01 |
Physical Properties
Density
0.321 lbs/in38.89 g/cm3
Specific Heat
0.109 BTU/lb-°F (32—212°F)456 J/kg-°K (0—100°C)
Modulus of Elasticity
29.7 x 103 ksi205 GPa (20°C)
Thermal Conductivity 212°F (100°C)
463 BTU-in/ft2-h-°F66.5 W/m-°C
Melting Range
2615 – 2635°F1435 – 1446°C
Electrical Resistivity
58 Ohm-circ mil/ft at 70°F0.096 µΩ/m at 20°C