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Norma ASTM F2094/F2094M-18a 1.5.2018 náhled

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ASTM F2094/F2094M-18a

Standard Specification for Silicon Nitride Bearing Balls (Includes all amendments and changes 7/12/2018).

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NORMA vydána dne 1.5.2018

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Informace o normě:

Označení normy: ASTM F2094/F2094M-18a
Datum vydání normy: 1.5.2018
Kód zboží: NS-852683
Počet stran: 9
Přibližná hmotnost: 27 g (0.06 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Anotace textu normy ASTM F2094/F2094M-18a :

This specification covers the establishment of the basic quality, physical/mechanical property, and test requirements for silicon nitride balls Classes I, II, and III to be used for ball bearings and specialty ball applications. Silicon nitride balls should be produced from either silicon nitride powder having the compositional limits from silicon metal powder.

Keywords:
ball bearings, bearing balls, ceramic, silicon nitride, Si3N4, precision balls,, ICS Number Code 21.100.01 (Bearings in general)

Doplňující informace

1. Scope

1.1 This specification covers the establishment of the basic quality, physical/mechanical property, and test requirements for silicon nitride balls Classes I, II, and III to be used for ball bearings and specialty ball applications.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

2. Referenced Documents

ENV 843-5	Advanced Technical CeramicsMonolithic CeramicsMechanical Properties at Room Temperature, Part 5, Statistical Analysis
R 1607	Testing Method for Fracture Toughness of High Performance Ceramics
EN 843-1	Advanced Technical CeramicsMonolithic CeramicsMechanical Properties at Room Temperature, Part 1. Determination of Flexural Strength Application for copies should be addressed to the British Standards Institute (BSI), 389 Chiswick High Rd., London W4 4AL, U.K., http://www.bsi-global.com.
STD 10	Metal Balls Application for copies should be addressed to the American Bearing Manufacturers Association, 1200 19th Street NW, Suite 300, Washington, DC 20036-2401.
ANSI/ASQC Z1.4	Sampling Procedures and Tables for Inspection by Attributes Application for copies should be addressed to the American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
	HardmetalsMetallographic Determination of Porosity and Uncombined Carbon
R 1601	Testing Method for Flexural Strength (Modulus of Rupture) of High Performance Ceramics Application for copies should be addressed to the Japanese Standards Organization (JSA), 4-1-24 Akasaka Minato-Ku, Tokyo, 107-8440, Japan, http://www.jsa.or.jp.
C1161-18(2023)	Standard Test Method for Flexural Strength of Advanced Ceramics at Ambient Temperature
C1421-18	Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature
B 46.1	Surface Texture (Surface Roughness, Waviness, and Lay) Application for copies should be addressed to the American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York, NY 10016-5990, http://www.asme.org.

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