Seamless UNS N08020 Nickel Alloy Steel Pipe refers to a high-performance corrosion-resistant alloy pipe, commonly known as Alloy 20 or Carpenter 20, is a nickel-iron-chromium austenitic alloy designed primarily for superior corrosion resistance in harsh chemical environments, particularly sulfuric acid. It is not a traditional carbon or low-alloy steel but a high-performance nickel-based superalloy with iron as a significant component (typically 32-46%). The "nickel alloy steel" designation in your query likely refers to its classification as a nickel-chromium-iron alloy used in steel-like piping applications. This material is stabilized with niobium (columbium) to prevent sensitization and intergranular corrosion, making it ideal for general corrosive service.Alloy 20 seamless pipes are produced under the ASTM B729 specification (or its ASME SB729 boiler code equivalent), which covers seamless, cold-worked, or hot-finished pipes and tubes in UNS N08020, N08026, and N08024 grades. These pipes are furnished in a stabilized-annealed condition unless otherwise specified.
Seamless UNS N08020 nickel alloy pipe, commonly known as Alloy 20 or Carpenter 20, is a high-performance, austenitic nickel-iron-chromium alloy designed for superior corrosion resistance in harsh chemical environments. It is not a traditional carbon or low-alloy steel but a nickel-based superalloy with significant iron content (often referred to as "nickel alloy steel" in industrial contexts). Developed specifically for resistance to sulfuric acid and other aggressive media, it is widely used in chemical processing, petrochemical, pharmaceutical, and food industries. The seamless construction ensures uniformity and strength without welds, making it ideal for high-pressure and high-temperature applications.
|
Nickel (Ni) |
32.0–38.0 |
|
Chromium (Cr) |
19.0–21.0 |
|
Iron (Fe) |
Balance |
|
Copper (Cu) |
3.0–4.0 |
|
Molybdenum (Mo) |
2.0–3.0 |
|
Niobium (Nb) + Tantalum (Ta) |
8xC–1.0 (min 0.30) |
|
Manganese (Mn) |
2.0 max |
|
Carbon (C) |
0.07 max |
|
Silicon (Si) |
1.0 max |
|
Phosphorus (P) |
0.045 max |
|
Sulfur (S) |
0.035 max |
|
Tensile Strength |
551 MPa (80 ksi) min |
|
Yield Strength (0.2% offset) |
241 MPa (35 ksi) min |
|
Elongation |
30% min |
|
Hardness (Brinell) |
217 max |
|
Melting Point |
1443°C (2629°F) |
|
Density |
8.05 g/cm³ |
Seamless ASTM B444 Inconel 625 Nickel Alloy Steel Pipe is a high-performance piping product made from a nickel-chromium-molybdenum alloy (Inconel 625 or UNS N06625) manufactured to the ASTM B444 specification.This combination of material and specification is known for exceptional corrosion resistance, high strength, and performance across a wide range of temperatures.Inconel 625 pipe under this standard is often supplied in one of two grades:• Grade 1 (Annealed): Suitable for service up to about (). This is the default condition.• Grade 2 (Solution Annealed): Recommended for use above () to improve creep and fatigue properties.① STANDARD: ASTM B444, ASME SB 444② OD RANGE : 6-457 MM③ THICKNESS RANGE: 1-45 MM
Inconel718 Seamless Nickel Alloy Steel Tube are high-strength, corrosion-resistant tubes crafted from a nickel-chromium alloy known for exceptional performance in extreme environments.① STANDARD: ASTM B983...② OD RANGE : 6-257 MM③ THICKNESS RANGE: 1-35 MM
Seamless Incoloy 825 Nickel Alloy Steel Pipe is a high-performance piping product made from Incoloy 825 (a registered trademark of Special Metals Corporation), an austenitic nickel-iron-chromium alloy with additions of molybdenum, copper, and titanium.It is a seamless pipe, meaning it's manufactured without a welded seam, providing superior structural integrity, especially under high pressure and temperature applications.The alloying elements provide broad resistance to a wide range of corrosive environments:• Chloride-Ion Stress-Corrosion Cracking: High nickel content provides excellent resistance.• Pitting and Crevice Corrosion: Enhanced by the molybdenum content.• Reducing Agents and Acids: Nickel, molybdenum, and copper provide outstanding resistance to agents like sulfuric acid and phosphoric acid.• Oxidizing Agents: Chromium confers resistance to oxidizing substances like nitric acid.• Intergranular Corrosion: The titanium addition, combined with appropriate heat treatment, stabilizes the alloy, making it resistant to intergranular attack, even after welding.① STANDARD: ASTM B163 ASTMB423 Seamless Superheater, Condenser, Hydraulic, Boiler and Heat-Exchanger Tubes② OD RANGE : 6-457 MM③ THICKNESS RANGE: 1-45 MM
Seamless UNS N08020 Nickel Alloy Steel Pipe refers to a high-performance corrosion-resistant alloy pipe, commonly known as Alloy 20 or Carpenter 20, is a nickel-iron-chromium austenitic alloy designed primarily for superior corrosion resistance in harsh chemical environments, particularly sulfuric acid. It is not a traditional carbon or low-alloy steel but a high-performance nickel-based superalloy with iron as a significant component (typically 32-46%). The "nickel alloy steel" designation in your query likely refers to its classification as a nickel-chromium-iron alloy used in steel-like piping applications. This material is stabilized with niobium (columbium) to prevent sensitization and intergranular corrosion, making it ideal for general corrosive service.Alloy 20 seamless pipes are produced under the ASTM B729 specification (or its ASME SB729 boiler code equivalent), which covers seamless, cold-worked, or hot-finished pipes and tubes in UNS N08020, N08026, and N08024 grades. These pipes are furnished in a stabilized-annealed condition unless otherwise specified.
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