• There are no items in your cart

ASTM B 939 : 2021

Current

Current

The latest, up-to-date edition.

Standard Test Method for Radial Crushing Strength, K, of Powder Metallurgy (PM) Bearings and Structural Materials

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

13-04-2021

€49.35
Excluding VAT

Committee
B 09
DocumentType
Test Method
Pages
4
PublisherName
American Society for Testing and Materials
Status
Current
Supersedes

1.1This test method covers the equipment and laboratory procedure for the determination of the radial crushing strength of materials using either a plain powder metallurgy (PM) bearing or a thin-walled hollow cylindrical test specimen. This is a destructive test that produces quantitative results.

1.2Limitations:

1.2.1The principle of this procedure is based on the material being tested having minimal ductility. The permanent deflection of the cylinder during the test should not exceed 10 % of the outside diameter.

1.2.2The radial crushing strength test results should be used only as a guide if the test specimen has a wall thickness that is greater than one-third of the outside diameter. These test results should then only be used for comparison with data from the test specimens of like materials and similar dimensions.

1.3Units—With the exception of the values for density and the mass used to determine density, for which the use of the gram per cubic centimetre (g/cm3) and gram (g) units are the industry standard, the values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5This 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.

ASTM B 439 : 2018 Standard Specification for Iron-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)
ASTM B 925 : 2015 Standard Practices for Production and Preparation of Powder Metallurgy (PM) Test Specimens
ASTM B 438 : 2017 Standard Specification for Bronze-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)

ASTM E 456 : 2013 : REV A : R2022 Standard Terminology Relating to Quality and Statistics
ASTM E 456 : 2013 : REV A : R2022 : EDT 1 Standard Terminology Relating to Quality and Statistics
ASTM B 439 : 2018 Standard Specification for Iron-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)
ASTM E 691 : 2020 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM E 456 : 2013 : REV A : R2017 : EDT 5 Standard Terminology Relating to Quality and Statistics
ASTM B 925 : 2015 Standard Practices for Production and Preparation of Powder Metallurgy (PM) Test Specimens
ASTM B 243 : 2022 Standard Terminology of Powder Metallurgy
ASTM E 691 : 2023 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM E 691 : 2022 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM B 243 : 2020 Standard Terminology of Powder Metallurgy
ASTM E 691 : 2021 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM B 438 : 2021 Standard Specification for Bronze-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)
ASTM B 243 : 2023 Standard Terminology of Powder Metallurgy
ASTM B 438 : 2017 Standard Specification for Bronze-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)
ASTM B 925 : 2015 : R2022 Standard Practices for Production and Preparation of Powder Metallurgy (PM) Test Specimens
ASTM E 456 : 2013 : REV A : R2017 : EDT 4 Standard Terminology Relating to Quality and Statistics
ASTM E 456 : 2013 : REV A : R2017 : EDT 6 Standard Terminology Relating to Quality and Statistics
ASTM B 439 : 2021 Standard Specification for Iron-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.