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Nickel Alloy 200 and 201 are high-purity nickel materials widely recognized for their exceptional resistance to corrosion and oxidation. These alloys are primarily used in industries where reliability and durability under harsh chemical or high-temperature environments are essential. The alloys are nearly pure nickel, with Alloy 201 containing slightly less carbon than Alloy 200, which enhances its resistance to embrittlement and improves performance in cryogenic and high-temperature applications. Nickel Alloy 200/201 pipes and tubes are extensively employed in chemical processing, marine, and aerospace industries due to their unmatched longevity and versatility.
Nickel Alloy 200 typically contains a minimum of 99.0% nickel, along with minor quantities of iron, copper, and other trace elements. Alloy 201, on the other hand, has slightly lower carbon content, which enhances its resistance to stress corrosion cracking. This difference makes Alloy 201 preferable in high-temperature or high-stress environments. Both alloys maintain excellent resistance to caustic alkalis, acids, and organic compounds, making them suitable for chemical transport and handling systems. The chemical purity of these alloys also ensures minimal contamination of transported media.
Nickel Alloy 200 and 201 pipes and tubes are high-purity nickel materials engineered for exceptional corrosion resistance, ductility, and strength. These tubes are widely used in chemical processing, petrochemical, marine, and aerospace industries, particularly in systems handling aggressive chemicals, caustic solutions, and high-temperature fluids.
Nickel 200 consists of at least 99% nickel, while Nickel 201 has slightly lower carbon content to enhance fabrication and reduce susceptibility to strain aging. Both alloys contain trace amounts of iron, copper, and manganese. The high nickel content provides excellent resistance to oxidation and corrosion in both reducing and alkaline environments.
Nickel Alloy 200 and 201 exhibit excellent mechanical properties, including high tensile strength, ductility, and toughness across a wide temperature range. They can withstand extreme thermal variations without losing structural integrity, making them ideal for high-temperature applications such as heat exchangers, furnaces, and boiler tubes. Both alloys maintain good creep resistance at elevated temperatures, and their ability to endure repeated stress and vibration makes them reliable for piping systems in critical industrial setups.
The versatility of Nickel Alloy 200/201 pipe and tube allows their use in a variety of industrial applications. They are commonly used in chemical processing plants, marine environments, and desalination units where corrosion resistance is crucial. These alloys are also used in aerospace and defense equipment, electrical resistance heating elements, and pharmaceutical manufacturing. Their resistance to oxidation, corrosion, and high-temperature stress ensures long service life even in aggressive environments.
Nickel 200/201 tubes exhibit tensile strength ranging from 275–550 MPa and yield strength between 125–380 MPa, depending on temper and processing. Elongation is typically 30–60%, offering superior ductility and toughness. These properties make the tubes suitable for high-pressure, high-temperature, and mechanically demanding applications.
These nickel alloys offer outstanding resistance to a wide range of corrosive media, including caustic alkalis, hydrochloric acid, and sulfuric acid. They resist pitting, crevice corrosion, and stress corrosion cracking, making them highly reliable for long-term service in chemical, marine, and industrial environments.
Specification Table
| Property | Nickel Alloy 200 | Nickel Alloy 201 |
|---|---|---|
| Chemical Composition | Nickel (min. 99%), Carbon 0.15% max, Iron 0.35% max, Copper 0.40% max | Nickel (min. 99%), Carbon 0.03% max, Iron 0.35% max, Copper 0.40% max |
| Density | 8.90 g/cm³ | 8.90 g/cm³ |
| Melting Point | 1455 °C | 1455 °C |
| Tensile Strength | 485–690 MPa | 485–690 MPa |
| Yield Strength (0.2% Offset) | 150–345 MPa | 150–345 MPa |
| Elongation | 40–50% | 40–50% |
| Hardness (Brinell) | 100–150 HB | 100–150 HB |
| Operating Temperature | -196°C to 600°C | -196°C to 600°C |
| Applications | Chemical processing, marine, heat exchangers, electrical equipment | Cryogenic service, chemical processing, high-stress environments |
Chemical Composition (Typical ranges for SSS32760)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Nickel Alloy 200 | Nickel Alloy 201 |
|---|---|---|
| Nickel (Ni) | Min. 99% | Min. 99% |
| Carbon (C) | 0.15% max | 0.03% max |
| Iron (Fe) | 0.35% max | 0.35% max |
| Copper (Cu) | 0.40% max | 0.40% max |
| Cobalt (Co) | 0.25% max | 0.25% max |
| Manganese (Mn) | 0.35% max | 0.35% max |
| Silicon (Si) | 0.35% max | 0.35% max |
| Sulfur (S) | 0.03% max | 0.03% max |
Mechanical Properties (Typical)
| Property | Nickel Alloy 200 | Nickel Alloy 201 |
|---|---|---|
| Tensile Strength | 485–690 MPa | 485–690 MPa |
| Yield Strength (0.2% Offset) | 150–345 MPa | 150–345 MPa |
| Elongation | 40–50% | 40–50% |
| Hardness (Brinell) | 100–150 HB | 100–150 HB |
| Operating Temperature Range | -196°C to 600°C | -196°C to 600°C |
| Creep Resistance | Good at elevated temperatures | Good at elevated temperatures |
| Corrosion Resistance | Excellent in chemical and marine environments | Excellent in chemical and marine environments |
Equivalent Grades
| Standard | Nickel Alloy 200 | Nickel Alloy 201 |
|---|---|---|
| UNS | N02200 | N02201 |
| ASTM | ASTM B161 / B162 | ASTM B161 / B162 |
| ASME | SB-161 / SB-162 | SB-161 / SB-162 |
| EN | 2.4066 | 2.4068 |
| JIS | SN1020 | SN1021 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Nominal Size (inches) | Outer Diameter (mm) | Wall Thickness (mm) | Weight per Meter (kg/m) |
|---|---|---|---|
| 1/2" | 21.3 | 2.77 | 1.50 |
| 3/4" | 26.7 | 2.87 | 1.95 |
| 1" | 33.4 | 3.38 | 2.73 |
| 1 1/2" | 48.3 | 3.68 | 4.65 |
| 2" | 60.3 | 3.91 | 6.30 |
| 3" | 88.9 | 4.55 | 10.80 |
| 4" | 114.3 | 4.85 | 15.80 |
| 6" | 168.3 | 5.54 | 27.60 |
Types Of Nickel Alloy 200 201 Pipe Tubes and Tubes
SS S32760 Seamless Pipe
SS S32760 Welded Pipe
SS S32760 ERW Pipe
SS S32760S EFW Pipe
Low Temperature Carbon Steel A333S Seamless Tube
S32760H Super Duplex Steel Welded Tube
S32760 Super Duplex Steel Capillary Tube
S32760H Super Duplex Steel Heat Exchanger Tubes
Frequently Asked Questions (FAQ)
1. What is Nickel Alloy 200/201?
Nickel Alloy 200 is a commercially pure nickel with excellent corrosion resistance and high strength. Alloy 201 is similar but has lower carbon content, providing improved resistance to embrittlement and stress corrosion cracking.
2. What are the key differences between Alloy 200 and 201?
The main difference is carbon content: Alloy 201 has significantly lower carbon (0.03% max) compared to Alloy 200 (0.15% max), making it more suitable for high-temperature and cryogenic applications.
3. What are common applications of Nickel Alloy 200/201 pipes and tubes?
They are used in chemical processing, marine equipment, heat exchangers, desalination plants, electrical resistance heating, and cryogenic systems due to their excellent corrosion resistance and mechanical properties.
Pipes & Tubes Supplier
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