ASTM B161 UNS N02200 Pure Nickel Tube is a commercially pure wrought nickel product widely used in chemical processing, heat exchangers, condensers, and alkali handling systems. The material is commonly known as Nickel 200 and is recognized for its excellent corrosion resistance in reducing environments, especially against caustic alkalis.
Under ASTM B161 specification, Nickel 200 tubes are supplied in seamless form, ensuring superior mechanical integrity and pressure resistance. The UNS designation N02200 refers to commercially pure nickel with a minimum nickel content of 99.0%. This high purity ensures outstanding thermal and electrical conductivity along with stable mechanical properties across a wide temperature range.
At DLX, we manufacture ASTM B161 UNS N02200 pure nickel tubes with strict quality control, precise dimensional tolerance, and customized solutions tailored for industrial B2B buyers.
For more details, pls directly contact us.
| Grade | Nickel (Ni)+ Cobalt (Co) | Copper (Cu) | Silicon (Si) | Manganese (Mn) | Carbon (C) | Magnesium (Mg) | Sulfur (S) | Phosphorus (P) | Iron (Fe) |
|
|
99.9% | ≤0.015 | ≤0.03 | ≤0.002 | ≤0.01 | ≤0.01 | ≤0.001 | ≤0.001 | ≤0.04 |
|
|
99.6% | 0.1 | 0.1 | 0.05 | 0.1 | 0.1 | 0.005 | 0.002 | 0.1 |
Physical & Mechanical Properties
| Grades | N4/Ni201 | N6/Ni200 |
| Density | 8.9g/cm³ | 8.9g/cm³ |
| Melting Point | 1455°C | 1445-1470℃ |
| Coefficient of Thermal Expansion | 13.0µm/m·°C | 13.3×10⁻⁶/℃ |
| Thermal Conductivity | 10.1W/m·K | 90.7 W/m·K |
| Electrical Resistivity | 0.103×10⁻⁶Ω·/m (at 20℃) | |
| Electrical Conductivity | 14.6% IACS | |
| Tensile Strength | ≥450MPa | ≥450 MPa |
| Yield Strength | ≥200MPa | ≥150 MPa |
| Elongation at Break | ≥40% | ≥40% |
| Hardness | ≤150 |
For more details, pls directly contact us.
Chemical Composition (Typical for UNS N02200)
| Element | Content (%) |
|---|---|
| Nickel (Ni) | ≥ 99.0 |
| Iron (Fe) | ≤ 0.40 |
| Copper (Cu) | ≤ 0.25 |
| Manganese (Mn) | ≤ 0.35 |
| Carbon (C) | ≤ 0.15 |
| Silicon (Si) | ≤ 0.35 |
| Sulfur (S) | ≤ 0.01 |
Nickel 200 offers:
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Excellent resistance to caustic soda and alkali solutions
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Good resistance to neutral and mildly reducing acids
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Strong resistance to stress corrosion cracking
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High thermal conductivity
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Good weldability and fabrication properties
For applications requiring lower carbon content at elevated temperatures, UNS N02201 ( Nickel 201 ) is often selected. However, for most chemical processing and heat exchanger systems operating below 315°C, N02200 performs exceptionally well.
International Grade Equivalents
| Standard | Grade | Description |
|---|---|---|
| ASTM | N02200 | Nickel 200 |
| ASTM | N02201 | Nickel 201 (Low Carbon) |
| DIN | 2.4066 | Nickel 200 |
| DIN | 2.4068 | Nickel 201 |
| GB/T | N6 | Industrial Pure Nickel |
| JIS | NW 2200 | Pure Nickel |
This global compatibility ensures that ASTM B161 UNS N02200 tubes can be used across chemical plants in Asia, Europe, the Middle East, and North America without specification conflict.
Mechanical and Physical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 380 MPa |
| Yield Strength | ≥ 100 MPa |
| Elongation | ≥ 40% |
| Density | 8.89 g/cm³ |
| Melting Point | 1435–1446°C |
| Thermal Conductivity | 70 W/m·K |
| Electrical Resistivity | 0.096 μΩ·m |
These properties make Nickel 200 tubes ideal for heat transfer applications and aggressive chemical handling systems.
Main Applications
1. Chemical Processing Industry
Nickel 200 tubes are widely used in:
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Caustic soda evaporators
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Chlor-alkali production equipment
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Reactor vessels
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Acid handling systems
The material resists alkaline corrosion better than many alloyed materials.
2. Heat Exchangers & Condensers
Due to its high thermal conductivity, UNS N02200 pure nickel tube performs efficiently in:
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Shell and tube heat exchangers
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Condenser systems
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Distillation columns
3. Food Processing Equipment
Pure nickel is resistant to certain food acids and offers clean surface finish performance.
4. Marine & Offshore Systems
In mildly corrosive marine atmospheres, Nickel 200 tubes provide long service life and reliability.
Industry Trend Analysis
The global demand for pure nickel tubes is steadily increasing due to:
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Expansion of chlor-alkali production in India and the Middle East
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Growth in renewable energy hydrogen processing
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Increasing investment in corrosion-resistant heat exchanger systems
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Stricter industrial safety and longevity requirements
B2B buyers today are no longer looking only at price. They focus on lifecycle cost, corrosion performance, and supply chain reliability. Seamless Nickel 200 tubes under ASTM B161 are becoming the preferred solution for medium-temperature alkali systems.
As environmental regulations tighten, chemical plants are upgrading materials to extend equipment lifespan. Pure nickel tube demand is expected to maintain steady growth in the next 5–10 years.
Comparison Table: Nickel 200 vs Nickel 201
| Item | Nickel 200 (N02200) | Nickel 201 (N02201) |
|---|---|---|
| Nickel Content | ≥ 99.0% | ≥ 99.0% |
| Carbon | ≤ 0.15% | ≤ 0.02% |
| High Temp Performance | Moderate | Better above 315°C |
| Cost | Slightly Lower | Slightly Higher |
| Typical Use | General Chemical | High Temp Alkali |
For most heat exchanger and chemical systems under 315°C, Nickel 200 is the more economical choice.
For more details, pls directly contact us.
About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.
Client Visits
Building Stronger Partnerships
We support all kinds of testing:
1. What is ASTM B161?
ASTM B161 is the standard specification for seamless Nickel and Nickel Alloy condenser and heat exchanger tubes.
2. What is UNS N02200?
UNS N02200 refers to commercially pure wrought nickel, commonly called Nickel 200.
3. Is Nickel 200 suitable for caustic soda?
Yes, it has excellent resistance to caustic alkali solutions.
4. What temperature limit does N02200 have?
Generally recommended below 315°C to avoid graphite formation.
5. Can Nickel 200 tubes be welded?
Yes, they have excellent weldability using conventional welding methods.
6. What surface finishes are available?
Bright annealed, pickled, polished, or customized finishes are available.
7. Is seamless better than welded?
For pressure systems and critical chemical applications, seamless tubes provide better structural integrity.
8. What industries commonly purchase Nickel 200 tubes?
Chemical processing, petrochemical, power generation, marine engineering, and hydrogen processing industries.
DLX Company Advantage
From our perspective at DLX, producing ASTM B161 UNS N02200 pure nickel tubes is not just about meeting a standard. It is about controlling every detail from raw material selection to final inspection.
Here is how we differentiate:
1. Strict Raw Material Control
We use high purity nickel raw materials with traceable heat numbers, ensuring chemical stability.
2. Precision Manufacturing
Our seamless tube production process ensures:
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Tight OD and wall thickness tolerance
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Smooth internal surface
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Stable mechanical properties
3. Customized Production
We support:
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Non-standard dimensions
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Small batch production
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OEM labeling
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Special packaging for export
4. Global Export Experience
We understand documentation, inspection standards, and project requirements in India, Russia, Iran, Southeast Asia, and Europe. That means smoother communication and fewer delays.
5. Cost-Performance Balance
Instead of competing only on low price, we focus on long-term cooperation. Stable quality reduces replacement cost and downtime.
In large chemical plants, material failure can cost more than the entire tube order. That is why our clients value reliability over short-term savings.
Market Positioning
ASTM B161 UNS N02200 pure nickel tube is positioned as a mid-to-high grade corrosion resistant material. It is not designed for extremely oxidizing acid environments, but for alkali, neutral, and reducing chemical systems, it performs exceptionally well.
With the rapid growth of hydrogen production and alkali chemical industries, demand for high purity nickel tubes continues to increase.
DLX is positioned as a professional manufacturer with:
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Stable production capacity
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Fast lead times
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Engineering support
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Competitive global pricing
We are not just selling nickel tubes. We are delivering corrosion-resistant solutions for industrial systems.
Conclusion
ASTM B161 UNS N02200 Pure Nickel Tube remains one of the most reliable materials for chemical processing and heat exchanger applications. Its high nickel purity, excellent corrosion resistance, good mechanical strength, and thermal conductivity make it a preferred choice in alkali environments.
As industries continue upgrading equipment for longer lifespan and higher efficiency, the demand for Nickel 200 seamless tubes will continue to grow steadily.
At DLX, we focus on precision, stability, and long-term cooperation. That is how we create value for our B2B partners worldwide.
