N4 N6 ROUND BARS
N4 / N6 Round Bar
Overview:
N4 and N6 round bars are made of commercially pure nickel, known for their excellent corrosion resistance, ductility, and thermal and electrical conductivity.
N4 corresponds to Nickel 201 (UNS N02201) - the low-carbon grade suitable for high-temperature applications.
N6 corresponds to Nickel 200 (UNS N02200) - the standard grade with high mechanical strength and chemical stability.
Standards:
ASTM B160 / ASME SB160
UNS N02200 / N02201
W.Nr. 2.4060 / 2.4061
Chemical Composition (%):
| Element | Ni (min) | Cu | Fe | Mn | Si | C (max) | S (max) |
|---|---|---|---|---|---|---|---|
| Content | ≥99.0 | ≤0.25 | ≤0.4 | ≤0.35 | ≤0.35 | ≤0.02 (N4) / ≤0.15 (N6) | ≤0.01 |
Key Properties:
Outstanding resistance to alkalis and neutral salts
High thermal and electrical conductivity
Excellent formability and weldability
Good mechanical properties over a wide temperature range
Non-magnetic in annealed condition
Applications:
Caustic soda and alkali production plants
Chemical and petrochemical equipment
Electrical and electronic components
Food processing machinery
Heat exchangers and evaporators
Advantages:
Excellent corrosion resistance in alkaline environments
High purity and stability
Easy fabrication and welding
Suitable for both high and low temperature service
Disadvantages:
Limited resistance to oxidizing acids (e.g., nitric acid)
Higher cost compared to stainless steel
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