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ASTM B535 UNS N08330 Nickel Alloy Steel Tube
Overview
ASTM B535 is a standard specification that covers the requirements for Nickel-Iron-Chromium-Silicon Alloys (UNS N08330 and UNS N08332) in the form of hot-worked, cold-worked, or annealed sheets, plates, bars, forgings, and seamless pipes.
The N08330 alloy is a high-nickel, high-chromium iron-based alloy, also known as Alloy 330 or Incoloy 330. It belongs to the austenitic stainless steel family and has excellent resistance to oxidation and carburization at high temperatures. The alloy is commonly used in applications involving thermal processing, heat-treating equipment, industrial furnaces, and chemical processing plants. It offers good strength and thermal stability at elevated temperatures, making it suitable for use in harsh environments.
Chemical Composition of ASTM B535 UNS N08830
| Grade | Ni | Cu | Pb | Sn | Fe | Si | Mn | Cr | P | S | |
| N08830 | Min | 34.0 | 0.75 | 17.0 | |||||||
| Max | 37.0 | 1.0 | 0.005 | 0.025 | Remainder | 1.5 | 2.0 | 20.0 | 0.03 | 0.03 |
Mechanical Properies of ASTM B535 UNS N08830
| Grade | Tensile Str Ksi(Mpa) | Yield Str Ksi(Mpa) | Elongation(%) | Hardness |
| N08830 | ≥70000(483) | ≥30000(207) | ≥30 | 70 to 90 HRB |
Uses&Application
1>.Chemical Processing: N08330 is widely used in chemical processing industries, especially for handling aggressive media such as sulfuric acid, hydrochloric acid, phosphoric acid, acetic acid, and other corrosive chemicals.
2>.Petrochemical Processing: The alloy is utilized in petrochemical plants for equipment and components exposed to highly corrosive environments, including offshore platforms, reactors, heat exchangers, and piping systems.
3>.Pollution Control: ASTM B535 UNS N08330 is employed in exhaust gas desulfurization (FGD) systems, scrubbers, and other pollution control equipment, where it offers excellent resistance to sulfur compounds and acidic gases.
