iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
ASTM

ASTM D2414-18a

(Test Method)

Standard Test Method for Carbon Black—Oil Absorption Number (OAN)

Standard Test Method for Carbon Black—Oil Absorption Number (OAN)

SIGNIFICANCE AND USE
4.1 The oil absorption number of a carbon black is related to the processing and vulcanizate properties of rubber compounds containing the carbon black.
SCOPE
1.1 This test method covers the determination of the oil absorption number of carbon black.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
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.

General Information

Status
Historical
Publication Date
30-Nov-2018
ICS
71.060.10 - Chemical elements
Technical Committee
D24 - Carbon Black
Drafting Committee
D24.11 - Carbon Black Structure
Current Stage
Ref Project

Relations

Replaces
ASTM D2414-18 - Standard Test Method for Carbon Black—Oil Absorption Number (OAN)
Effective Date
01-Dec-2018
Referred By
ASTM D4122-17(2023) - Standard Practice for Carbon Black—Evaluation of an Industry Reference Black
Effective Date
01-Dec-2018
Referred By
ASTM D3493-21 - Standard Test Method for Carbon Black—Oil Absorption Number of Compressed Sample (COAN)
Effective Date
01-Dec-2018
Referred By
ASTM D7849-23 - Standard Classification for Nomenclature of Reference Materials of Committee D24
Effective Date
01-Dec-2018
Referred By
ASTM D5817-20 - Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing
Effective Date
01-Dec-2018
Referred By
ASTM D3053-23 - Standard Terminology Relating to Carbon Black
Effective Date
01-Dec-2018
Referred By
ASTM D6915-23 - Standard Practice for Carbon Black—Evaluation of Standard Reference Blacks
Effective Date
01-Dec-2018
Referred By
ASTM D7854-21 - Standard Test Method for Carbon Black-Void Volume at Mean Pressure
Effective Date
01-Dec-2018
Referred By
ASTM D4821-20 - Standard Guide for Carbon Black—Validation of Test Method Precision and Bias
Effective Date
01-Dec-2018
Referred By
ASTM D1765-23a - Standard Classification System for Carbon Blacks Used in Rubber Products
Effective Date
01-Dec-2018

Buy Standard

ASTM D2414-18a - Standard Test Method for Carbon Black—Oil Absorption Number (OAN)ASTM D2414-18a - Standard Test Method for Carbon Black—Oil Absorption Number (OAN)
PreviousNext
Standard
ASTM D2414-18a - Standard Test Method for Carbon Black—Oil Absorption Number (OAN)
English language
9 pages
sale 15% off
Preview
sale 15% off
Preview
REDLINE ASTM D2414-18a - Standard Test Method for Carbon Black—Oil Absorption Number (OAN)REDLINE ASTM D2414-18a - Standard Test Method for Carbon Black—Oil Absorption Number (OAN)
PreviousNext
Standard
REDLINE ASTM D2414-18a - Standard Test Method for Carbon Black—Oil Absorption Number (OAN)
English language
9 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D2414 − 18a
Standard Test Method for
1
Carbon Black—Oil Absorption Number (OAN)
This standard is issued under the fixed designation D2414; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope Gravity of Liquids by Digital Density Meter
D4483Practice for Evaluating Precision for Test Method
1.1 This test method covers the determination of the oil
StandardsintheRubberandCarbonBlackManufacturing
absorption number of carbon black.
Industries
1.2 The values stated in SI units are to be regarded as the
D4821Guide for Carbon Black—Validation of Test Method
standard. The values given in parentheses are for information
Precision and Bias
only.
D5554TestMethodforDeterminationoftheIodineValueof
1.3 This standard does not purport to address all of the Fats and Oils
3
safety concerns, if any, associated with its use. It is the
2.2 DIN Standards:
responsibility of the user of this standard to establish appro-
DIN16945Testingofresins,hardenersandaccelerators,and
priate safety, health, and environmental practices and deter-
catalyzed resins
mine the applicability of regulatory limitations prior to use.
DIN EN ISO 660Animal and vegetable fats and oils -
1.4 This international standard was developed in accor-
Determination of acid value and acidity
dance with internationally recognized principles on standard-
3. Summary of Test Method
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
3.1 In this test method, oil is added by means of a
mendations issued by the World Trade Organization Technical
constant-rate buret to a sample of carbon black in the mixer
Barriers to Trade (TBT) Committee.
chamber of an absorptometer. As the sample absorbs the oil,
the mixture changes from a free-flowing state to one of a
2. Referenced Documents
semiplastic agglomeration, with an accompanying increase in
2
2.1 ASTM Standards:
viscosity. This increased viscosity is transmitted to the torque-
D445Test Method for Kinematic Viscosity of Transparent
sensingsystemoftheabsorptometer.Whentheviscosityofthe
andOpaqueLiquids(andCalculationofDynamicViscos-
mixture reaches a predetermined torque level, the absorptom-
ity)
eter and buret will shut off simultaneously. The volume of oil
D1218Test Method for Refractive Index and Refractive
added is read from the direct-reading buret. The volume of oil
Dispersion of Hydrocarbon Liquids
per unit mass of carbon black is the oil absorption number.
D1765Classification System for Carbon Blacks Used in
3.2 Either DBP, paraffin or Epoxidized Fatty Acid Ester
Rubber Products
(EFA) oils are acceptable for use with most standard pelleted
D1799Practice for Carbon Black—Sampling Packaged
grades of carbon black including N-series carbon blacks found
Shipments
in Classification D1765. OAN testing using paraffin or EFA
D1900Practice for Carbon Black—Sampling Bulk Ship-
oils on some standard blacks and specialty blacks including
ments
powder products may result in unacceptable differences as
D4052Test Method for Density, Relative Density, and API
compared to OAN testing with DBPoil. Paraffin and EFAoils
are considered non-hazardous; some paraffin oils are FDA
approved. For any of the oils, Sections8–12 (Calibration,
1
This test method is under the jurisdiction ofASTM Committee D24 on Carbon
Procedure, Calculation, and Report) are to be consistent with
Black and is the direct responsibility of Subcommittee D24.11 on Carbon Black
Structure.
the oil selected for use. Referee testing between suppliers and
Current edition approved Dec. 1, 2018. Published January 2019. Originally
usersshoulduseDBPoiluntilsuchtimethatprecisiondataare
approved in 1965. Last previous edition approved in 2018 as D2414–18. DOI:
available for alternate oils.
10.1520/D2414-18A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on AvailablefromDeutschesInstitutfurNormunge.V.(DIN),Burggrafenstrasse6,
the ASTM website. 10787 Berlin, Germany, http://www.din.de.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2414 − 18a
4. Significance and Use 8. Oil Absorptometers, Instrument Calibration, and End-
Point Procedures
4.1 Theoilabsorptionnumberofacarbonblackisrelatedto
theprocessingandvulcanizat
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D2414 − 18 D2414 − 18a
Standard Test Method for
1
Carbon Black—Oil Absorption Number (OAN)
This standard is issued under the fixed designation D2414; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This test method covers the determination of the oil absorption number of carbon black.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
2. Referenced Documents
2
2.1 ASTM Standards:
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D1218 Test Method for Refractive Index and Refractive Dispersion of Hydrocarbon Liquids
D1765 Classification System for Carbon Blacks Used in Rubber Products
D1799 Practice for Carbon Black—Sampling Packaged Shipments
D1900 Practice for Carbon Black—Sampling Bulk Shipments
D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
D4821 Guide for Carbon Black—Validation of Test Method Precision and Bias
D5554 Test Method for Determination of the Iodine Value of Fats and Oils
3
2.2 DIN Standards:
DIN 16945 Testing of resins, hardeners and accelerators, and catalyzed resins
DIN EN ISO 660 Animal and vegetable fats and oils - Determination of acid value and acidity
3. Summary of Test Method
3.1 In this test method, oil is added by means of a constant-rate buret to a sample of carbon black in the mixer chamber of an
absorptometer. As the sample absorbs the oil, the mixture changes from a free-flowing state to one of a semiplastic agglomeration,
with an accompanying increase in viscosity. This increased viscosity is transmitted to the torque-sensing system of the
absorptometer. When the viscosity of the mixture reaches a predetermined torque level, the absorptometer and buret will shut off
simultaneously. The volume of oil added is read from the direct-reading buret. The volume of oil per unit mass of carbon black
is the oil absorption number.
3.2 Either DBP, paraffin or Epoxidized Fatty Acid Ester (EFA) oils are acceptable for use with most standard pelleted grades
of carbon black including N-series carbon blacks found in Classification D1765. OAN testing using paraffin or EFA oils on some
standard blacks and specialty blacks including powder products may result in unacceptable differences as compared to OAN testing
with DBP oil. Paraffin and EFA oils are considered non-hazardous; some paraffin oils are FDA approved. For any of the oils,
1
This test method is under the jurisdiction of ASTM Committee D24 on Carbon Black and is the direct responsibility of Subcommittee D24.11 on Carbon Black Structure.
Current edition approved July 1, 2018Dec. 1, 2018. Published August 2018January 2019. Originally approved in 1965. Last previous edition approved in 20172018 as
D2414 – 17.D2414 – 18. DOI: 10.1520/D2414-18.10.1520/D2414-18A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from Deutsches Institut fur Normung e.V.(DIN), Burggrafenstrasse 6, 10787 Berlin, Germany, http://www.din.de.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D2414 − 18a
Sections 8 – 12 (C
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

ASTM
ASTM D2414-23a(Test Method)
Standard Test Method for Carbon Black—Oil Absorption Number (OAN)

SIGNIFICANCE AND USE
4.1 The oil absorption number of a carbon black is related to the processing and vulcanizate properties of rubber compounds containing the carbon black.
SCOPE
1.1 This test method covers the determination of the oil absorption number of carbon black.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
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.

  • Standard
    10 pages
    English language
    sale 15% off
  • Standard
    10 pages
    English language
    sale 15% off
ASTM
ASTM D7633-13(2022)(Test Method)
Standard Test Method for Carbon Black—Carbon Content

SIGNIFICANCE AND USE
4.1 The total carbon content of a carbon black is a requirement for the calculation and reporting of carbon dioxide emissions. It can also be used in calculations to estimate yield of the process.
SCOPE
1.1 This test method covers the instrumental determination of carbon content in a carbon black sample. Values obtained represent the total carbon content.  
1.2 The method is applicable to tread, carcass and specialty type carbon blacks obtained from partial combustion or thermal decomposition processes, which typically contain 95 to 100 % carbon.  
1.3 The results of these tests can be expressed as mass % carbon.  
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.5 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.  
1.6 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.

  • Standard
    3 pages
    English language
    sale 15% off
ASTM
ASTM D7854-21(Test Method)
Standard Test Method for Carbon Black-Void Volume at Mean Pressure

SIGNIFICANCE AND USE
5.1 The greater a carbon black resists compression by having substantial aggregate irregularity and non-sphericity, the greater the compressed volume and void volume. Also, the more that a carbon black resists compression, the greater the energy required to compress the sample per unit void volume.  
5.2 Structure is a property that strongly influences the physical properties developed in carbon black-elastomer compounds for use in tires, mechanical rubber goods, and other manufactured rubber products. Structure by void volume is based on compression while structure measurements by OAN (Test Method D2414) and COAN (Test Method D3493) are based on oil absorption.
SCOPE
1.1 This test method covers a procedure to measure a carbon black structure property by Void Volume at mean pressure. Compressed void volumes are obtained by measuring the compressed volume of a weighed sample in a cylindrical chamber as a function of pressure exerted by a movable piston. A profile of void volume as a function of pressure provides a means to assess carbon black structure at varying levels of density and aggregate reduction. For the purposes of standardized testing a single value of void volume is reported at 50 MPa mean pressure.  
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.

  • Standard
    4 pages
    English language
    sale 15% off
  • Standard
    4 pages
    English language
    sale 15% off
ASTM
ASTM D6556-21(Test Method)
Standard Test Method for Carbon Black—Total and External Surface Area by Nitrogen Adsorption

SIGNIFICANCE AND USE
4.1 This test method is used to measure the total and external surface area of carbon blacks based on multipoint nitrogen adsorption. The NSA measurement is based on the B.E.T. theory and it includes the total surface area, inclusive of micropores, pore diameters less than 2 nm (20 Å). The external surface area, based on the statistical thickness method (STSA), is defined as the specific surface area that is accessible to rubber.  
4.2 CTAB Surface Area (formerly Test Method D3765) has been withdrawn. The CTAB value may be estimated from the STSA value using Eq 1. The equation is based on a linear regression of the STSA and CTAB measured values of the SRB 5 standards.
SCOPE
1.1 This test method covers the determination of the total surface area by the Brunauer, Emmett, and Teller (B.E.T. NSA) theory of multilayer gas adsorption behavior using multipoint determinations and the external surface area based on the statistical thickness surface area method.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
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. (The minimum safety equipment should include protective gloves, sturdy eye and face protection).  
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.

  • Standard
    6 pages
    English language
    sale 15% off
  • Standard
    6 pages
    English language
    sale 15% off
ASTM
ASTM D5817-20(Practice)
Standard Practice for Carbon Black, Pelleted—Reduction, Blending, and Drying of Gross Samples for Testing

SIGNIFICANCE AND USE
4.1 Several test methods for carbon black require the reduction in sample size or the blending of the test sample to reduce the variation of the measured characteristic. Other factors being equal, larger samples will tend to be more representative of the total supply. This practice provides procedures for reducing the large sample obtained from the bag and bulk sampling practices to a convenient size for conducting a number of tests to describe the material and measure its quality in such a manner that the smaller portion is most likely to be a representation of the bulk sample. Failure to follow the procedures in this practice could result in providing a nonrepresentative sample to be used in subsequent testing. Individual test methods provide for minimum amounts of material to be tested.  
4.2 Test Method A, Reduction of Sample Size, is typically used to obtain an aliquot from a large sample, splitting a black into two or more equal portions, or reducing a blended black from Test Method B to a specified sample size. The final sample is always smaller than the original sample and would not be considered to be a “well blended” sample.  
4.3 Test Method B, Blending of Carbon Black, is typically used to prepare a homogeneous sample. The homogeneous sample may be used for several tests (see Note 2) or may be reduced in size by Test Method A. The final sample size is the same as the original.  
4.4 When a sample is to be blended and reduced, the sample should be blended (Test Method B) before reduction (Test Method A). The blending and reduction must be done before the sample is dried (Test Method C).
SCOPE
1.1 This practice describes the procedure for blending of pelleted carbon black, the procedure for the reduction of gross samples of pelleted carbon black to the appropriate size for testing and the preparation of the sample for testing. These techniques are intended to minimize variations in measured characteristics between test samples. Standard terminology relating to carbon black samples is found in Terminology D3053. The classification system for carbon blacks used in rubber products can be found in Classification System D1765.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
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.

  • Standard
    5 pages
    English language
    sale 15% off
  • Standard
    5 pages
    English language
    sale 15% off
ASTM
ASTM D2414-23a(Test Method)
Standard Test Method for Carbon Black—Oil Absorption Number (OAN)

SIGNIFICANCE AND USE
4.1 The oil absorption number of a carbon black is related to the processing and vulcanizate properties of rubber compounds containing the carbon black.
SCOPE
1.1 This test method covers the determination of the oil absorption number of carbon black.  
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
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.

  • Standard
    10 pages
    English language
    sale 15% off
  • Standard
    10 pages
    English language
    sale 15% off
ASTM
ASTM C747-23(Test Method)
Standard Test Method for Moduli of Elasticity and Fundamental Frequencies of Carbon and Graphite Materials by Sonic Resonance

SIGNIFICANCE AND USE
5.1 This test method may be used for material development, characterization, design data generation, and quality control purposes.  
5.2 This test method is primarily concerned with the room temperature determination of the dynamic moduli of elasticity and rigidity of slender rods or bars composed of homogeneously distributed carbon or graphite particles.  
5.3 This test method can be adapted for other materials that are elastic in their initial stress-strain behavior, as defined in Test Method E111.  
5.4 This basic test method can be modified to determine elastic moduli behavior at temperatures from –75 °C to +2500 °C. Thin graphite rods may be used to project the specimen extremities into ambient temperature conditions to provide resonant frequency detection by the use of transducers as described in 7.1.
SCOPE
1.1 This test method covers determination of the dynamic elastic properties of isotropic and near isotropic carbon and graphite materials at ambient temperatures. Specimens of these materials possess specific mechanical resonant frequencies that are determined by the elastic modulus, mass, and geometry of the test specimen. The dynamic elastic properties of a material can therefore be computed if the geometry, mass, and mechanical resonant frequencies of a suitable (rectangular or cylindrical) test specimen of that material can be measured. Dynamic Young's modulus is determined using the resonant frequency in the flexural or longitudinal mode of vibration. The dynamic shear modulus, or modulus of rigidity, is found using torsional resonant vibrations. Dynamic Young's modulus and dynamic shear modulus are used to compute Poisson's ratio.  
1.2 This test method determines elastic properties by measuring the fundamental resonant frequency of test specimens of suitable geometry by exciting them mechanically by a singular elastic strike with an impulse tool. Specimen supports, impulse locations, and signal pick-up points are selected to induce and measure specific modes of the transient vibrations. A transducer (for example, contact accelerometer or non-contacting microphone) senses the resulting mechanical vibrations of the specimen and transforms them into electric signals. (See Fig. 1.) The transient signals are analyzed, and the fundamental resonant frequency is isolated and measured by the signal analyzer, which provides a numerical reading that is (or is proportional to) either the frequency or the period of the specimen vibration. The appropriate fundamental resonant frequencies, dimensions, and mass of the specimen are used to calculate dynamic Young's modulus, dynamic shear modulus, and Poisson's ratio. Annex A1 contains an alternative approach using continuous excitation.
FIG. 1 Block Diagram of Typical Test Apparatus  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 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.  
1.5 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.

  • Standard
    19 pages
    English language
    sale 15% off
  • Standard
    19 pages
    English language
    sale 15% off
ASTM
ASTM C714-23(Guide)
Standard Guide for Thermal Diffusivity of Carbon and Graphite by Thermal Pulse Method

SIGNIFICANCE AND USE
5.1 Thermal diffusivity is an important property required for such purposes as design applications under transient heat flow conditions, determination of safe operating temperature, process control, and quality assurance.  
5.2 The flash method is used to measure values of thermal diffusivity (α) of a wide range of solid materials. It is particularly advantageous because of the simple specimen geometry, small specimen size requirements, rapidity of measurement, and ease of handling materials having a wide range of thermal diffusivity values over a large temperature range with a single apparatus. The short measurement times involved reduce the chances of contamination and change of specimen properties due to exposure to high temperature environments.  
5.3 Thermal diffusivity results in many cases can be combined with values for specific heat (Cp) and density (ρ) to derive thermal conductivity (λ) from the relation λ = αCpρ. For guidance on converting thermal diffusivity to thermal conductivity, refer to Practice C781.  
5.4 This test method described in this guide can be used to characterize graphite for design purposes.  
5.5 Test Method E1461 is a more detailed form of this test method described in this guide and has applicability to much wider ranges of materials, applications, and temperatures.
SCOPE
1.1 This guide covers the determination of the thermal diffusivity of carbons and graphite at temperatures up to 500 °C. It is applicable only to small easily fabricated specimens. Thermal diffusivity values in the range from 0.04 cm2/s to 2.0 cm2/s are readily measurable by this guide; however, for the reason outlined in Section 7, for materials outside this range this guide may not be applicable.  
1.2 Units—The values stated in SI units are to be regarded as the 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.

  • Guide
    5 pages
    English language
    sale 15% off
  • Guide
    5 pages
    English language
    sale 15% off
ASTM
ASTM C562-23(Test Method)
Standard Test Method for Moisture in a Graphite Sample

SIGNIFICANCE AND USE
4.1 This test method is applicable only for determination of the volatile moisture content resulting from adsorption of water vapor from the atmosphere, and is not intended to give representative moisture data for graphite that has been exposed to liquid water contamination.
SCOPE
1.1 This test method provides a practical determination for the percentage of moisture in a graphite sample.  
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.

  • Standard
    2 pages
    English language
    sale 15% off
  • Standard
    2 pages
    English language
    sale 15% off
ASTM
ASTM C561-23(Test Method)
Standard Test Method for Ash in a Graphite Sample

SIGNIFICANCE AND USE
4.1 This test method provides a practical estimate of nonburnable residues in commercially available graphite materials. The ash values determined by this test method are of use in comparing the relative purity of various grades of graphite. To facilitate use, this test method institutes simplifications that preclude the ability to determine absolutely the ash values of the test graphite material due to uncontrolled sources of trace contamination.  
4.2 This test method is not intended for use in determining the ash content of purified graphites, for example, nuclear materials. The relationship between the mineral content of a graphite sample and the ash content of that sample is unknown and is not determined by the application of this test method.
SCOPE
1.1 This test method provides a practical determination for the ash content in a graphite sample.  
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.

  • Standard
    3 pages
    English language
    sale 15% off
  • Standard
    3 pages
    English language
    sale 15% off