ASTM B514 UNS NO8800 Inconel Alloy Welded Pipe for Petrochemical Industry
ASTM B514 UNS NO8800 Inconel Alloy Welded Pipe for Petrochemical Industry
ASTM B514 UNS N08800 welded tubing is a nickel-chromium-iron alloy (Incoloy 800). Its durability and resistance to high temperatures, oxidation, and corrosion make it an ideal choice for the petrochemical industry. Key properties include high-temperature strength up to approximately 1500°F (816°C), excellent creep-rupture strength, resistance to chloride stress corrosion cracking, and the ability to withstand thermal cycling without degradation. This makes it suitable for heat exchangers in petroleum refining and for general corrosive service in petrochemical plants.
What are the ASTM specifications for Incoloy 800?
This nickel-iron-chromium alloy, Incoloy 800 pipe, maintains its austenitic microstructure even when exposed to high temperatures. According to ASTM B407, these pipes are annealed at 1800°F for 15 minutes. After annealing, the 800 alloy seamless pipe is air-cooled.
ASTM B514 is the standard specification for nickel-iron-chromium alloy welded pipe. ASTM B514 covers Incoloy 800 and Incoloy H alloys. This specification covers cold-worked and annealed welded pipe suitable for general corrosive and heat-resistant applications. ASTM B514 Incoloy 800 welded pipe is typically suitable for service temperatures up to 1100°F (593°C). ASTM B514 Incoloy 800H welded pipe is typically suitable for service temperatures above 1100°F (593°C) where creep and rupture resistance are required. They are annealed to produce a controlled grain size for optimal performance within this temperature range. These Incoloy alloys offer very high resistance to chloride-ion stress corrosion cracking and also exhibit good resistance to polythionic acid cracking. Therefore, these pipes are well-suited for use in high-temperature petrochemical environments.
Chemical Composition of ASTM B514 800H Tube
| GRADE | Ni | C | Fe | Si | Mn | S | Al | Ti | Cu | Cr |
| Incoloy 800 | 30-35 | 0.1 max | 39.5 min | 1.0 max | 1.5 max | 0.015 max | 0.15-0.60 | 0.15-0.60 | 0.75 max | 19-23 |
Mechanical Properties of ASTM B514 800H Pipe
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Incoloy 800H | 7.94 g/cm3 | 1385 °C (2525 °F) | Psi – 75,000 , MPa – 520 | Psi – 30,000 , MPa – 205 | 30 % |
ASTM B514 Incoloy 800 Welded Pipe Applications
Natural Gas Processing Industry
Power Generation Industry
Food Processing Industry
Fertilizer Industry
Chemical Industry
Petrochemical Industry Applications
Heat Exchangers: Used in petroleum refineries for processes such as air cooling of process streams.
Corrosive Service: Its resistance to various corrosive environments makes it suitable for general corrosive service within petrochemical plants.
High-Temperature Process: Ideal for high-temperature and high-pressure processes where other materials might degrade.
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications. We also offer customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneesteel.com.
