ASME SB163 Incoloy 825 Seamless Nickel Alloy Heat Exchanger Tube with Solution Annealed and Corrosion Resistant Properties for Customized Applications

ASME SB163 UNS N08825 Incoloy 825 Seamless Nickel Alloy Tube

ASME SB163 UNS N08825 Incoloy 825 seamless tube is a nickel-iron-chromium alloy tube designed for condenser and heat exchanger service where resistance to corrosive environments is required.
Also known as Alloy 825 or Incoloy 825, UNS N08825 contains chromium, molybdenum, copper and titanium additions. The alloy is commonly selected for process equipment exposed to both oxidizing and reducing environments, including acidic and chloride-containing media.
The tubes are supplied in seamless construction and solution annealed condition, with dimensional tolerances, testing and surface condition controlled according to the applicable project specification.

UNS N08825 is an austenitic nickel-iron-chromium alloy with molybdenum, copper and titanium additions. Typical composition ranges include approximately 38-46% Ni, 19.5-23.5% Cr, 2.5-3.5% Mo and 1.5-3.0% Cu, with titanium added for stabilization.
The combination of alloying elements provides resistance to a broad range of corrosive process conditions and makes Alloy 825 suitable for demanding chemical and heat-transfer applications.

Equivalent material designations should be confirmed against the applicable project specification before substitution.

Raw Material → Tube Piercing → Hot Working → Cold Drawing / Sizing → Solution Annealing → Pickling → Straightening → Cutting → Inspection → Marking → Packaging
For precision tubing, additional cold drawing or sizing operations can be applied to achieve the specified outside diameter, wall thickness and dimensional tolerances.

Inspection can be performed according to ASTM B163 / ASME SB163 and project-specific requirements. Available inspection items include:

Testing requirements should be confirmed according to the purchase specification and applicable standard.

The standard supply condition can be solution annealed and pickled. Other surface conditions may be available according to application requirements, including:

Available tube dimensions can be customized according to the heat exchanger drawing or purchase specification. Typical supply parameters:

For heat exchanger projects, tube dimensions should be matched with the tubesheet hole diameter, tube expansion method and exchanger design.

The following documents can be provided according to project requirements:

Incoloy 825 seamless tubes are normally protected with end caps, bundled according to size and securely packed in export-grade wooden cases or suitable protective packaging to prevent deformation and surface damage during transportation.