ASTM B423 UNS N08825 Incoloy 825 Nickel Alloy Seamless Tube for Corrosive Service

Product Overview

ASTM B423 UNS N08825 seamless tube is manufactured from Incoloy 825 nickel-iron-chromium alloy and is designed for applications requiring nickel alloy materials in corrosive and high-temperature service environments.

Incoloy 825, also known as UNS N08825, contains nickel, chromium, iron, molybdenum, copper, and titanium alloying elements. The material is commonly selected for chemical processing equipment, heat exchangers, condensers, and industrial systems involving acidic or corrosive media.

Manufactured according to ASTM B423 requirements, UNS N08825 seamless tubes are produced with controlled chemical composition, mechanical properties, and dimensional specifications. ASTM B423 covers nickel-iron-chromium-molybdenum-copper alloy seamless pipe and tube products including UNS N08825.

Material and Standard

UNS N08825 Incoloy 825 Nickel Alloy

Standard: ASTM B423
Material Grade: UNS N08825
Trade Name: Incoloy 825
Material Type: Nickel-Iron-Chromium-Molybdenum-Copper Alloy
Tube Type: Seamless Tube

The alloy composition of Incoloy 825 is designed for industrial applications requiring nickel alloy tubing under corrosive operating conditions.

Chemical Composition

Typical alloy elements of UNS N08825 include:

The chemical composition shall comply with ASTM B423 requirements.

Manufacturing Process

ASTM B423 UNS N08825 seamless tubes are manufactured through controlled production processes:

Alloy Billet Preparation

Nickel alloy billets are prepared according to material requirements.

Seamless Tube Forming

The billets are processed through hot working methods to produce seamless tube structures.

Cold Working

Cold drawing may be applied to achieve specified outside diameter, wall thickness, and surface requirements.

Heat Treatment and Finishing

Final production steps include:

• Heat treatment
• Straightening
• Surface finishing
• Dimensional inspection

Technical Features

Nickel Alloy Material Structure

UNS N08825 combines nickel, chromium, molybdenum, copper, and titanium alloy elements for industrial corrosive service applications.

Seamless Tube Construction

The seamless structure provides uniform tube geometry and is commonly applied in heat exchanger and process equipment manufacturing.

Suitable for Acid and Chemical Service

Incoloy 825 tubes are commonly used in equipment exposed to chemical processing environments, including systems involving acidic media.

Product Specifications

Available Dimensions

Tube dimensions can be supplied according to project requirements.

Applications

Chemical Processing Equipment

UNS N08825 seamless tubes are commonly used in:

• Acid processing equipment
• Chemical reactors
• Process heat exchangers

Heat Exchanger Systems

Applications include:

• Shell and tube heat exchangers
• Condensers
• Industrial cooling systems

Oil and Gas Equipment

Used in:

• Corrosive service equipment
• Offshore processing systems
• Refining equipment

Quality Control and Inspection

Inspection procedures may include:

Material Testing

• Chemical composition analysis
• Mechanical property testing

Dimensional Inspection

• Outside diameter measurement
• Wall thickness inspection
• Length verification

Non-Destructive Testing

• Eddy Current Testing (ET)
• Ultrasonic Testing (UT)
• Hydrostatic Testing

Inspection requirements can be adjusted according to project specifications.

Packaging

ASTM B423 UNS N08825 seamless tubes are packaged according to transportation requirements.

Typical packaging:

• Tube bundles
• Protective wrapping
• Wooden cases
• Export packaging

Tube marking may include:

• Standard designation
• Material grade
• Size information
• Heat number