ASTM B243-23 PDF

Overview

ASTM B243-23: Standard Terminology of Powder Metallurgy is an international standard developed by ASTM International that provides essential definitions for the powder metallurgy (PM) industry. This terminology standard is designed to assist professionals, manufacturers, and researchers in accurately interpreting and applying terms related to powder metallurgy processes, materials, and products. Developed following the World Trade Organization’s internationally recognized principles on standardization, ASTM B243-23 ensures consistency and clarity in global communication within the PM field.

Key Topics

The standard covers a comprehensive range of relevant terminology for powder metallurgy, including:

• Powder Types and Morphologies: Definitions for various forms of powders such as acicular (needle-shaped), dendritic, granular, flake, and nanopowder.
• Powder Properties: Terms related to apparent density, flow rate, particle size distribution, green strength, and porosity, which are crucial for quality control.
• Processing Methods:
  • Additive Manufacturing: Concepts such as additive manufacturing (AM), powder-bed fusion (PBF), binder jetting (BJT), and directed energy deposition (DED), cross-referenced to ISO/ASTM 52900.
  • Traditional Processes: Sintering, isostatic pressing, compaction, roll compacting, and powder forging.
• Defects and Quality Terms: Blister cracks, lamination, segregation, warpage, and density ratio.
• Injection Molding & Compounding: Terms specific to metal injection molding (MIM), including binder, debinding, feedstock, cavity, and runner.
• Shapes and Components: Definitions for compact, preform, briquet, bar, and die sets used in PM part production.

Applications

ASTM B243-23 is used across multiple aspects of powder metallurgy, benefitting professionals who require a consistent vocabulary, including:

• Manufacturers: Ensures clear communication of requirements and specifications for PM products, improving quality control across global supply chains.
• Quality Assurance: Supports testing and inspection teams by providing agreed definitions for measurements such as apparent hardness, sintered density, and compressibility.
• Research and Development: Enables R&D teams to align on process terms and innovate new powders, composites, and AM processes.
• Standardization and Compliance: Helps organizations comply with international trade requirements and technical regulations by aligning with WTO TBT principles.
• Training and Education: Serves as a foundational reference for training new employees, technical staff, and students in the language and practices of powder metallurgy.

Related Standards

ASTM B243-23 makes direct references to several important related standards and documents, including:

• ASTM B331: Test Method for Compressibility of Metal Powders in Uniaxial Compaction, supporting terms related to powder consolidation.
• ISO/ASTM 52900: General Principles for Additive Manufacturing - Fundamentals and Vocabulary, referenced for additional AM terminology.
• Annual Book of ASTM Standards, Volume 02.05: Contains broader informational context for PM materials, testing, and properties.

Conclusion

ASTM B243-23: Standard Terminology of Powder Metallurgy provides a critical framework for the consistent use of terminology across the powder metallurgy sector. By ensuring clear definitions for industry processes, materials, and quality metrics, this standard supports technical accuracy and effective international collaboration in PM applications, additive manufacturing, and related fields.