Nickel 200
Nickel 200 is a 99.6% pure wrought nickel alloy. It offers excellent mechanical properties and resistance to many corrosive environments. It is best known for its exceptional resistance to caustic alkalis up to 600°F (315°C).
- Common Forms: Plate, Sheet, Strip, Pipe, Tube, Round Bar, Wire.
- Key Feature: Outstanding resistance to caustic soda (sodium hydroxide).
- Physical Prop: High electrical and thermal conductivity; ferromagnetic.
- Temperature Limit: Recommended for service below 600°F (315°C).
Nickel 200 is the standard material of choice for environments containing caustic alkalis. Its high purity also gives it unique physical properties not found in other nickel alloys, making it valuable for electronic and food processing applications.
Caustic Resistance
Excellent resistance to all concentrations of sodium hydroxide (caustic soda) at temperatures up to 600°F, forming a protective oxide film.
High Conductivity
Unlike alloyed materials (like Inconel or Monel), pure Nickel 200 retains very high thermal and electrical conductivity.
Product Purity
With a minimum nickel content of 99.0%, it is ideal for applications where product contamination must be minimized, such as food and synthetic fiber processing.
| Element | Content (%) |
|---|---|
| Nickel (Ni) + Cobalt | 99.0 min |
| Copper (Cu) | 0.25 max |
| Iron (Fe) | 0.40 max |
| Manganese (Mn) | 0.35 max |
| Carbon (C) | 0.15 max |
| Silicon (Si) | 0.35 max |
| Sulfur (S) | 0.01 max |
| Product Form | ASTM / ASME Standards |
|---|---|
| Pipe & Tube (Seamless) | ASTM B161, ASME SB161 |
| Pipe (Welded) | ASTM B725, ASME SB725 |
| Plate, Sheet, Strip | ASTM B162, ASME SB162 |
| Bar & Rod | ASTM B160, ASME SB160 |
| Fittings | ASTM B366, ASME SB366 |
| Forgings | ASTM B564, ASME SB564 |
| Property | Typical Values (Room Temp) |
|---|---|
| Tensile Strength | 55 - 75 ksi (380 - 515 MPa) |
| Yield Strength (0.2% Offset) | 15 - 30 ksi (105 - 205 MPa) |
| Elongation | 40 - 55 % |
| Hardness (Rockwell B) | 45 - 75 HRB |
*Note: Nickel 200 is often dual-certified as 200/201, meaning it meets the strength of 200 and the low carbon chemistry of 201.
Chemical Processing
Manufacturing and handling of sodium hydroxide, particularly in evaporators, heating coils, and storage tanks.
Food Processing
Equipment for handling fatty acids, fruit juices, and other food products to prevent contamination.
Synthetic Fibers
Used in the production of viscose rayon and in the handling of soap.
Electrical & Electronic
Lead wires, battery components, and anode plates due to its high electrical conductivity.
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