ASTM B163 Seamless Incoloy 825 Chemical Processing Tubing
ASTM B163 seamless Incoloy 825 pipe is a nickel-iron-chromium alloy (UNS NO8825) known for its excellent corrosion resistance in a wide range of environments, including reducing and oxidizing acids, and good mechanical strength at both room temperature and elevated temperatures up to approximately 550℃ (1020℃F). Its key properties include resistance to stress corrosion cracking, pitting, and crevice corrosion, making it suitable for chemical processing, oil and gas, and heat exchanger applications.
What is the maximum temperature resistance of Incoloy 825 alloy?
Incoloy 825 alloy exhibits good mechanical properties from cryogenic to moderately high temperatures. Exposure to temperatures above approximately 1000℃F (540℃) causes microstructural changes (phase transformations) that significantly reduce ductility and impact strength.
Chemical Composition of Incoloy Alloy 825 Tube
| % | % | ||
| 38.0--46.0 | 0.05 max | ||
| 19.5--23.5 | 1.0 max | ||
| 2.5--3.5 | 0.03 max | ||
| 1.5 --3.0 | 0.5 max | ||
| 0.6--1.2 | 0.2 max | ||
| 22.0 min (~33%) |
Tensile Properties of Incoloy Alloy 825 Pipe
| 0.2% Proof Stress |
% |
||||||
| 440 | 770 | 35 | |||||
| 880 | 1000 | 15 |
ASTM B163 covers seamless tubing for condensers and heat exchangers.
This specification details dimensional requirements, including outside diameter and wall thickness.
Certification requires chemical analysis, mechanical properties (tensile, hardness), and other performance tests, such as eddy current and hydrostatic pressure.
Chemical Processing: Equipment such as storage tanks, heating coils, and pickling tanks.
Oil and Gas: Pipes and components for offshore and sour gas service.
Heat Exchangers: Used in various types of heat exchangers, including those in petroleum refineries and phosphoric acid production.
Nuclear Applications: Suitable for components in nuclear fuel reprocessing and radioactive waste disposal.
Other Uses: Marine exhaust systems, pollution control equipment, and food and water heating equipment.
Gnee Steel specializes in the production of various nickel-based alloys. Gnee Steel's product packaging includes steel strapping: Pipes with an outer diameter of 3 inches or less are typically strapped together with polypropylene film to prevent rust during sea transportation, and then secured with steel strapping. Wooden boxes/crates: Pipes are typically packaged in wooden boxes or crates to protect them during transportation, especially those that are longer or have larger diameters. Seaworthy export packaging: Suppliers typically use standard seaworthy export packaging methods, which may include a variety of materials and techniques to protect the pipes during transportation. Tarpaulin packaging: This prevents rainwater, seawater, and other external factors from penetrating the export wooden crates during transportation. Gnee Steel specializes in the production and sale of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, nuclear, and other industries, and we can provide customized alloy material solutions based on customer needs. For alloy material pricing inquiries or customized alloy material solutions, please feel free to contact us for a quote at ss@gneemetal.com
