ASTM C899 - 79(2018)

    Standard Practice for Use of Metric Units of Measure for Reporting Properties of Refractory Materials

    Active Standard ASTM C899 | Developed by Subcommittee: C08.92

    Book of Standards Volume: 15.01


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    Significance and Use

    3.1 This practice is provided to facilitate comparison of physical and mechanical properties of refractory materials by establishing uniform presentation of data.

    3.2 Units have been chosen, where possible, to result in numbers of magnitude familiar in the refractories industry, that is, g/cm3 rather than the SI preferred unit kg/m3. It is recommended that SI prefixes be selected for use with the units such that the resulting numerical values lie between 0.1 and 1000. For most properties, the prefixes kilo (k) and mega (M) are preferred. Other prefixes are given in the following table:

    Multiplication
    Factor

     Prefix

     Symbol

    109

    giga

    G

    106

    mega

    M

    103

    kilo

    k

    102

    hectoA

    h

    101

    dekaA

    da

    10−1

    deciA

    d

    10−2

    centiA

    c

    10−3

    milli

    m

    10−6

    micro

    μ

    10−9

    nano

    n

    (A) To be avoided where practical.

    3.3 The conversion factors, which have been selected for their general utility in the refractories industry, have been taken from Practice E380, where possible. For uniformity, they have been presented to four decimal places. In use, the converted values should be rounded to the same number of significant figures as in the original value.

    1. Scope

    1.1 This practice presents the units to be employed for reporting the properties of refractories, such as density, crushing stress, modulus of rupture, tensile stress, thermal conductivity, and permeability.

    1.2 For convenience, a table of conversion factors between inch-pound units and SI units is included.

    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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    E380 Practice for Use of the International System of Units (SI) (the Modernized Metric System)

    ISO Standard

    ISO1000 SI Units and Recommendations for the Use of Their Multiples and of Certain Other Units


    ICS Code

    ICS Number Code 01.060 (Quantities and units); 81.080 (Refractories)

    UNSPSC Code

    UNSPSC Code 31370000(Refractories)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/C0899-79R18

    Citation Format

    ASTM C899-79(2018), Standard Practice for Use of Metric Units of Measure for Reporting Properties of Refractory Materials, ASTM International, West Conshohocken, PA, 2018, www.astm.org

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