ASTM B690-22 PDF

Overview

ASTM B690-22 is the Standard Specification for Iron-Nickel-Chromium-Molybdenum Alloy (UNS N08367) Seamless Pipe and Tube. Developed by ASTM International, this specification provides detailed requirements for cold-finished annealed or hot-finished annealed seamless pipe and tube intended for special corrosive and heat-resisting applications. Products manufactured in accordance with this standard are supplied in the solution heat-treated and descaled condition, or, if bright annealed, descaling may not be required.

This standard applies to seamless pipe and tube used in environments where high corrosion resistance and strength are critical, such as chemical processing, petrochemical plants, and other demanding industrial settings.

Key Topics

• Material Requirements: Covers the use of iron-nickel-chromium-molybdenum alloy (UNS N08367), with strict chemical composition limits for key elements such as chromium, nickel, molybdenum, and others.
• Mechanical Properties: Specifies minimum values for tensile strength, yield strength, and elongation, ensuring robust performance for high-stress and corrosive applications.
• Condition and Finish: Pipes and tubes are delivered in a solution heat-treated, descaled, or bright annealed condition, ensuring optimal corrosion resistance and surface quality.
• Hydrostatic Testing: All pipes and tubes must pass a hydrostatic pressure test to verify integrity and leak tightness.
• Dimensional Tolerances: Clear limits on variations in diameter, wall thickness, and length, promoting consistency and fit during installation.
• Certification & Marking: Mandatory certification of compliance and test results from suppliers, alongside detailed product marking for traceability.

Applications

Iron-nickel-chromium-molybdenum alloy seamless pipes and tubes covered by ASTM B690-22 offer unique benefits for industries requiring high-performance, corrosion-resistant materials, including:

• Chemical Processing Equipment: Used for piping, heat exchangers, and reactors where resistance to acids and chlorides is critical.
• Petrochemical and Refining: Suitable for environments with aggressive chemicals, elevated pressures, and high temperatures.
• Power Generation: Applied in heat-resisting systems and boiler tubing, where structural strength and longevity are essential.
• Marine Applications: Valued for their resistance to seawater-induced corrosion and pitting.
• Food and Pharmaceutical Industries: Utilized where non-reactivity and cleanliness are essential for process piping.

Related Standards

ASTM B690-22 references and complements several important documents and industry standards, including:

• ASTM A450/A450M - General Requirements for Carbon and Low-Alloy Steel Tubes
• ASTM B880 - Chemical Check Analysis Limits for Nickel, Nickel Alloys, and Cobalt Alloys
• ASTM E8/E8M - Test Methods for Tension Testing of Metallic Materials
• ASTM E1473 - Chemical Analysis of Nickel, Cobalt, and High-Temperature Alloys
• ASTM E29 - Significant Digits in Test Data to Determine Conformance with Specifications

These referenced standards provide test methods, analysis techniques, and general requirements that help ensure seamless integration and global acceptance of materials produced under ASTM B690-22.

Keywords: ASTM B690-22, iron-nickel-chromium-molybdenum alloy, UNS N08367, seamless pipe, seamless tube, heat-resisting applications, corrosion-resistant alloy, chemical processing piping, hydrostatic testing, ASTM standards compliance.