ASTM certification

ASTM American Society for testing and materials to the English abbreviation, its English name for the American Society for Testing and Materials. ASTM International Association for testing material ( International Association for Testing Materials, IATM ). IATM first meeting in 1882 in Europe will be held, composed of working committee.
ASTM certification introduction
ASTM American Society for testing and materials to the English abbreviation, its English name for the American Society for Testing and Materials. ASTM International Association for testing material ( International Association for Testing Materials, IATM ). Eighteen eighties, somebody puts forward to establish technical committee system, by the technical committee organization representing various aspects to technical seminar, discuss and solve the relevant material specifications, test procedures and other issues. IATM first meeting in 1882 in Europe will be held, composed of working committee. At that time, mainly studies the solution of steel and other materials test methods for problems. In 1902 at the international society for testing and Materials Association fifth annual meeting, the United States of America branch declared formal independence, American Society for testing materials ( American Society for Testing Materials ). With the continuous expansion of business scope and development, the work of the Institute Center is not only to research and develop material specifications and methods of test standard, also includes a variety of materials, products, systems, services item characteristics and performance standards, test methods, procedures and standards. In 1961, the organization changed its name to the American Society for testing and materials ( American Society for Testing and Materials, ASTM ).
ASTM is the United States of America 's oldest, largest nonprofit standard one of the academic community. After a century of development, the existing ASTM 33669 ( individual and group) members, of which there are 22396 main committee member in its various committees as technical expert. The ASTM Technical Committee of with a total of 2004 Technical Committee member. There are 105817 units participated in the ASTM standards work, main task is development of materials, products, systems, and services in areas such as characteristics and performance standard, test method and procedure standard, promote knowledge development and promotion.
Standard system
ASTM standards have been adopted a voluntary agreement system. Standard system by the technical committee responsible for, by the standard working group drafting. After the technical committee and the technical committee voted to adopt, in most member common views, and by most members voted in favour, standard was approved, as a formal standard publishing. In a standard preparation process, the preparation of interest to each member and any enthusiastic groups have the right to express their views, the committee opinion is given to research and treatment, to absorb all the correct opinions and suggestions.
According to the ASTM ASTM publications have reported, in 1997 set a new standard 350, standard revision 1698, carry out standard standardization activities 2681. From these figures can be seen, the activity is frequent, and very fruitful. ASTM standards are divided into 15 categories ( Section ), all kinds of volumes contained several different, standard volume (Volume ) was published, a total of 73 volumes, more than 10000 standard, with ASTM standard form of publication yearbook. 1999 standards Yearbook classification, all kinds of volumes and standard number is as follows:
The first iron and steel products
Second kinds of nonferrous metal
Third kinds of metallic material test method and analysis program
The fourth types of construction materials
Fifth types of petroleum products, lubricants and fuels
Sixth types of paint, coating and aromatic compounds
Seventh categories of textile products and materials
Eighth types of plastic
Ninth kinds of rubber
Tenth types of electrical insulation and electronic products
Eleventh water and environmental technology
Twelfth kinds of nuclear energy, solar energy
The thirteenth category of medical devices and services
Fourteenth types of instruments and general test methods
Fifteenth types of general industrial product, special chemical products and consumption of materials
Method of number
ASTM standard number form:
Standard code + classification code standard serial number + year + standard English name set.
Sample:
ASTM A 331M-95 ( 1996) Standard Specification for alloy steel bar cold
Explain.
1 standard serial numbers with letters M for metric standard, without the letter M standard for imperial units.
2 years later in making brackets for standard review time.
3 A.B.C ... Says revised edition.
4 letter classification code:
A -- black metal
B -- non-ferrous metal ( copper, aluminum, powder metallurgy materials, wire etc. )
C -- cement, ceramic, concrete and masonry materials
D -- various other materials ( petroleum products, fuel, low strong plastic etc. )
E -- miscellaneous ( metal chemical analysis, fire test, nondestructive test, statistical method etc.)
F -- special purpose material ( electronic materials, cushioning materials, surgical materials etc. )
G -- material corrosion, modification and degradation
The ASTM standard data types:
Technical Specification ( technical specification ) Guidance ( Guide) Test Method ( test method Classification ( ) Standard Practice ( classification ) Standard Practice for Terminology ( Definition ) terminology ) ( definition ) also includes: Test Report ( test reports and test methods can be used )
The ASTM standard types:
1 test methods ( Test Method ): the test results of materials, products, systems or services to one or more properties, characteristics or performance of identification, evaluation and measurement of a defined process.
2 Standard Specification ( Standard Specification ): materials, products, systems or services meet the requirements of a set of precise description, also include how to satisfy each requirement of the determination procedure.
3 ( Practice ): Standard Practice for performing one or more does not produce results a particular operation or function of the defined process.
4 Standard Terminology ( Terminology ): terms, definitions of terms, the terms that describe the symbols, abbreviations, composed of a file.
Standard Guide for 5 ( Guidance ): do not recommend specific course of action of a series of choice or description.
6 standard classification ( Standard Classification ): according to the same characteristics of the materials, products, systems or services system packet