ASTM-D7775 Standard Guide for Measurements on Small Graphite Specimens

ASTM-D7775 - 2021 EDITION - CURRENT
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Standard Guide for Measurements on Small Graphite Specimens
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Scope

1.1 This guide covers best practice for properties measurements on small (nonstandard) graphite specimens and requirements for representing properties of the bulk material. This guide is aimed specifically at measurements required on graphites, where there may be constraints on the geometry or volume of the test specimen, or both. The objective of this guide is to provide advice on how the application of selected standards under noncompliant conditions can be tested for suitability.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This 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.

1.4 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.

Significance and Use

4.1 The purpose of this guide is to report considerations, which should be included in testing nonstandard specimens that lie outside the constraints imposed on size/volume in existing ASTM standards for graphite (noting that there are some generic ASTM standards with no such constraints). These constraints may be real or may be an artifact of the round-robin test program that supported the standard. It is the responsibility of the user to demonstrate that the application of a standard outside any specified constraints is valid and reasonably provides properties of the bulk material from which the nonstandard specimen was extracted.

Keywords

carbon; coefficient of thermal expansion; density; graphite; resistivity; resonance; sonic; tensile stress-strain; thermal diffusivity; velocity; Young's Modulus;

To find similar documents by ASTM Volume:

05.05 (Combustion Characteristics; Manufactured Carbon and Graphite Products; Catalysts)

To find similar documents by classification:

59.100.20 (Carbon materials)

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Document Number

ASTM-D7775-21

Revision Level

2021 EDITION

Status

Current

Modification Type

Revision

Publication Date

Nov. 1, 2021

Document Type

Guide

Page Count

11 pages

Committee Number

D02.F0