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 |
Hastelloy B3 Seamless Nickel Alloy Steel Tube is a high-performance nickel-molybdenum alloy tube specifically designed to offer excellent resistance to hydrochloric acid and other strongly reducing chemicals. Known for their enhanced thermal stability and improved fabricability, these tubes are widely used in harsh chemical environments. ① STANDARD: ASTM B622/ ASTM B829 ...② OD RANGE : 6-257 MM③ THICKNESS RANGE: 1-35 MM
Seamless Incoloy 800HT Pipe are high-performance iron-nickel-chromium alloy tubes designed for exceptional strength and superior resistance to high-temperature oxidation and corrosion. Manufactured to meet ASTM B407 standards, these seamless tubes are widely used in industries such as petrochemical, power generation, and heat treatment. ① STANDARD: ASTM B407 ...② OD RANGE : 6-508MM③ THICKNESS RANGE: 1-45 MM
Seamless Incoloy 825 Nickel Alloy Steel Tube 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 : 6-257 MM③ THICKNESS RANGE: 1-35 MM
UNS N08120 Seamless Nickel Alloy Steel Tube, also known as VDM® Alloy N08120 or Nicrofer 3725 Nb, is a nickel-chromium alloy used in industrial heating applications. Let’s explore its uses in various industries:Furnace Construction:Industrial Annealing Furnaces: UNS N08120 is commonly used in annealing furnaces where elevated temperatures are involved.Waste Incineration Plants: It finds applications in waste incinerators due to its high mechanical strength and resistance to carburization and sulfidation.Chemical Industry:In chemical processing, UNS N08120 is employed for components exposed to aggressive environments.Its resistance to carburizing and sulfiding atmospheres ensures durability in chemical plants.Environmental Protection Plants:The alloy contributes to environmental protection systems.It is used in applications where high temperatures and corrosion resistance are critical.Automotive Industry:UNS N08120 may find use in automotive components subjected to extreme heat.Its properties make it suitable for specific applications in this industry.Power Plants:In power generation facilities, UNS N08120 is utilized for superheaters, recuperators, and other high-temperature components.Its creep resistance and operating temperature range contribute to efficient power plant operation.Typical applications include furnace muffles, heat treatment baskets, wire cloth, conveyor belts, and superheaters for tubes.
If you have any enquiry about quotation or cooperation,please feel free to email us at admin@xtd-ss.com or use the following enquiry form. Our sales will contact you within 24 hours. Thank you for your interest in our products.