ASTM is one of the oldest and largest non-profit standards organizations in the United States. After a century of development, ASTM now has 33,669 (individual and group) members, of which 22,396 members of the main committees in its various committees to serve as a technical expert work. ASTM's technical committees under the *** have 2004 technical subcommittees. There are 105,817 organizations that participate in the development of ASTM standards, with the primary mission of developing standards for properties and performance of materials, products, systems, and services, standards for test methods and procedures, and promoting the development and dissemination of related knowledge.
Types of ASTM standards
1. test method (Test Method): a defined process of identifying, measuring, and evaluating one or more properties, characteristics, or performance of a material, product, system, or service that produces test results.
2. Standard Specification (Standard Specification): materials, products, systems or services to meet a set of requirements for the precise description, but also how to meet each requirement to determine the process.
3. Standard procedures (Practice): the implementation of one or more specific operations or functions that do not produce test results to determine the process.
4. standard terminology (Terminology): a document consisting of terms, definitions of terms, descriptions of terms, symbols, abbreviations and so on.
5. Standard Guidance (Guidance): a series of options or instructions that do not recommend a particular course of action.
6. Standard Classification (Standard Classification): according to the same characteristics of the material, product, system or service system grouping.