Nickel 200 and Nickel 201 are commercially pure wrought nickel grades used where corrosion resistance, electrical performance and controlled fabrication behavior are important. Their main practical difference is carbon control, which affects selection for elevated-temperature service.
Nickel 200 vs Nickel 201 Wire at a Glance
| UNS designation | Nickel 200: N02200; Nickel 201: N02201 |
|---|---|
| Carbon control | Nickel 201 is the low-carbon modification |
| General use | Both are used in chemical, electrical and caustic-service applications |
| Supply forms | Wire, coil, spool or straight length as ordered |
Why Carbon Content Matters
The lower carbon level of Nickel 201 reduces the risk of graphitization-related embrittlement during prolonged exposure in certain elevated-temperature ranges. Nickel 200 remains widely used at lower and moderate temperatures where its chemistry and properties meet the design requirement.
Selection should use the governing material specification, maximum operating temperature, exposure time, atmosphere and fabrication route.
Corrosion Resistance and Applications
Both grades offer useful resistance in many neutral and reducing environments and are commonly considered for caustic alkali handling. Performance depends on concentration, temperature, aeration, contaminants and stress. Typical enquiries include electrical leads, chemical-processing components, wire forms and corrosion-resistant assemblies.
Wire Condition, Diameter and Packaging
| Diameter and tolerance | State nominal diameter, permitted variation and roundness if critical |
|---|---|
| Condition | Annealed, drawn or other required delivery condition |
| Supply format | Coil, spool, straight length, coil weight or spool dimensions |
| Surface | Bright, clean, pickled or application-specific finish |
| Testing | Chemistry, tensile, dimensional, surface or third-party inspection |
| Documents | Material certificate and heat or batch traceability |
Which Grade Should You Choose?
- Choose Nickel 200 when the temperature and fabrication route permit standard commercially pure nickel.
- Choose Nickel 201 when low carbon is required for the specified elevated-temperature exposure.
- Do not substitute grades without reviewing temperature, chemistry and certification.
View Nickel 200 WireView Nickel 201 Wire
RFQ Checklist
Provide alloy, UNS number, standard, diameter and tolerance, condition, quantity, coil or spool requirement, surface, testing, documents, destination and delivery date.
Post time: Aug-13-2026