ASTM B564-22

Overview

ASTM B564-22: Standard Specification for Nickel Alloy Forgings defines requirements for a broad range of nickel alloy forgings. Issued by ASTM International, this specification applies to forgings used in demanding industrial applications where chemical resistance, strength at elevated temperatures, and reliability are critical. The standard covers numerous alloy grades, designating each by its Unified Numbering System (UNS) number, and addresses the essential properties required to ensure safety, quality, and material performance.

Key Topics

• Scope and Alloy Coverage ASTM B564-22 includes wrought forgings of various nickel alloys, such as nickel-chromium, nickel-copper, nickel-iron-chromium, nickel-molybdenum, and other multi-element alloys. Common UNS designations covered are N04400, N06625, N08800, N08810, N06022, among others.

• Chemical Composition Each alloy must meet stringent composition requirements outlined in the standard. Chemical analyses are performed per specified ASTM test methods to confirm the content of nickel, chromium, molybdenum, copper, iron, and other relevant elements.

• Mechanical Properties The specification sets minimum values for:

  • Tensile strength
  • Yield strength
  • Elongation Mechanical properties are determined through standardized tension testing to ensure the material's suitability for service.

• Grain Size Certain alloys must meet average grain size criteria to guarantee mechanical stability and performance, particularly at elevated service temperatures.

• Testing and Inspection Mandatory tests include:

  • Chemical analysis
  • Tension tests
  • Grain size examination (per E112)
  • Nondestructive ultrasonic testing (as applicable) Procedures ensure uniform quality, detect internal defects, and verify compliance with critical requirements.

• Certification and Marking Materials are clearly marked with specification numbers and relevant details. Certification and test reports can be supplied if specified by the purchaser.

Applications

ASTM B564-22 nickel alloy forgings are widely used where high strength, corrosion resistance, and thermal stability are paramount. Typical applications include:

• Petrochemical and Chemical Processing: Components like flanges, fittings, and pump parts exposed to corrosive media and high temperatures.
• Power Generation: Turbine blades, boiler components, and heat exchanger parts requiring high-performance materials.
• Oil & Gas: Equipment operating in harsh offshore and subsea environments.
• Aerospace: Engine components and structural parts demanding superior mechanical properties and oxidation resistance.
• Marine and Military: Forgings used in naval vessels and defense hardware due to their reliability and longevity in aggressive environments.

Related Standards

To ensure comprehensive quality control and interoperability, ASTM B564-22 references several related standards and practices:

• ASTM B880: General Requirements for Chemical Check Analysis Limits of Nickel, Nickel Alloys, and Cobalt Alloys
• ASTM E8/E8M: Test Methods for Tension Testing of Metallic Materials
• ASTM E29: Practice for Using Significant Digits in Test Data
• ASTM E112: Test Methods for Determining Average Grain Size
• ASTM E1473: Test Methods for Chemical Analysis of Nickel, Cobalt, and High-temperature Alloys

Practical Value

Compliance with ASTM B564-22 ensures nickel alloy forgings meet consistent quality benchmarks, making the material reliable for critical operations. The standard's precise requirements for alloy composition, mechanical strength, and testing protocols reduce the risk of failure, downtime, and costly maintenance. Adoption of this specification helps manufacturers and end-users meet industry, client, and safety expectations across global markets.