ASTM D7775-16

Standard Guide for Measurements on Small Graphite Specimens

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STANDARD published on 15.12.2016

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The information about the standard:

Designation standards: ASTM D7775-16
Note: WITHDRAWN
Publication date standards: 15.12.2016
SKU: NS-674536
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Carbon materials

Annotation of standard text ASTM D7775-16 :

Keywords:
carbon, coefficient of thermal expansion, density, graphite, resistivity, resonance, sonic, tensile stress-strain, thermal diffusivity, velocity, Young´s Modulus,, ICS Number Code 59.100.20 (Carbon materials)

Additional information

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.

1. 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 nuclear 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 and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents

C886-21	Standard Test Method for Scleroscope Hardness Testing of Carbon and Graphite Materials
C1259-21	Standard Test Method for Dynamic Young’s Modulus, Shear Modulus, and Poisson’s Ratio for Advanced Ceramics by Impulse Excitation of Vibration
E228-22	Standard Test Method for Linear Thermal Expansion of Solid Materials With a Push-Rod Dilatometer
C695-21	Standard Test Method for Compressive Strength of Carbon and Graphite
C714-23	Standard Guide for Thermal Diffusivity of Carbon and Graphite by Thermal Pulse Method
C747-23	Standard Test Method for Moduli of Elasticity and Fundamental Frequencies of Carbon and Graphite Materials by Sonic Resonance
C748-20	Standard Test Method for Rockwell Hardness of Graphite Materials
C611-21	Standard Test Method for Electrical Resistivity of Manufactured Carbon and Graphite Articles at Room Temperature
C651-20	Standard Test Method for Flexural Strength of Manufactured Carbon and Graphite Articles Using Four-Point Loading at Room Temperature
C565-15(2021)	Standard Test Methods for Tension Testing of Carbon and Graphite Mechanical Materials
C559-16(2020)	Standard Test Method for Bulk Density by Physical Measurements of Manufactured Carbon and Graphite Articles
E1461-13(2022)	Standard Test Method for Thermal Diffusivity by the Flash Method
C781-20	Standard Practice for Testing Graphite Materials for Gas-Cooled Nuclear Reactor Components
C769-15(2020)e1	Standard Test Method for Sonic Velocity in Manufactured Carbon and Graphite Materials for Use in Obtaining an Approximate Value of Young´s Modulus (Includes all amendments and changes 12/3/2020).
C749-15(2020)	Standard Test Method for Tensile Stress-Strain of Carbon and Graphite
C1161-18(2023)	Standard Test Method for Flexural Strength of Advanced Ceramics at Ambient Temperature

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