ASTM C899-79(2022)

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

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.
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.

General Information

• Status: Published
• Publication Date: 31-Aug-2022
• ICS: 01.060 - Quantities and units
• ICS: 81.080 - Refractories
• Technical Committee: C08 - Refractories
• Drafting Committee: C08.92 - The Joseph E. Kopanda Subcommittee for Editorial, Terminology and Classification

Standards Content (Sample)

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.
Designation: C899 − 79 (Reapproved 2022)
Standard Practice for
Use of Metric Units of Measure for Reporting Properties of
Refractory Materials
(COMMITTEE C08 SUPPLEMENT TO E380)
This standard is issued under the fixed designation C899; 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.
1. Scope 3.2 Units have been chosen, where possible, to result in
numbers of magnitude familiar in the refractories industry, that
1.1 This practice presents the units to be employed for
3 3
is, g/cm rather than the SI preferred unit kg/m.Itis
reporting the properties of refractories, such as density, crush-
recommended that SI prefixes be selected for use with the units
ing stress, modulus of rupture, tensile stress, thermal
such that the resulting numerical values lie between 0.1 and
conductivity, and permeability.
1000. For most properties, the prefixes kilo (k) and mega (M)
1.2 For convenience, a table of conversion factors between
are preferred. Other prefixes are given in the following table:
inch-pound units and SI units is included.
Multiplication
Prefix Symbol
1.3 This international standard was developed in accor- Factor
10 giga G
dance with internationally recognized principles on standard-
10 mega M
ization established in the Decision on Principles for the 3
10 kilo k
2 A
10 hecto h
Development of International Standards, Guides and Recom-
1 A
10 deka da
mendations issued by the World Trade Organization Technical
−1 A
10 deci d
−2 A
Barriers to Trade (TBT) Committee.
10 centi c
−3
10 milli m
−6
10 micro µ
2. Referenced Documents
−9
10 nano n
2.1 ASTM Standards:
A
To be avoided where practical.
E380 Practice for Use of the International System of Units
(SI) (the Modernized Metric System) (Withdrawn 1997)
3.3 The conversion factors, which have been selected for
theirgeneralutilityintherefractoriesindustry,havebeentaken
2.2 ISO Standard:
from Practice E380, where possible. For uniformity, they have
ISO 1000 SI Units and Recommendations for the Use of
been presented to four decimal places. In use, the converted
Their Multiples and of Certain Other Units
values should be rounded to the same number of significant
figures as in the original value.
3. Significance and Use
3.1 This practice is provided to facilitate comparison of
4. Standard Units
physical and mechanical properties of refractory materials by
4.1 Density—Grams per cubic centimetre (g/cm ).
establishing uniform presentation of data.
4.2 Energy or Work—Joules (J) or megajoules (MJ).
4.3 Mass—Grams (g), kilograms (kg), or megagrams (Mg).
ThispracticeisunderthejurisdictionofASTMCommitteeC08onRefractories
4.4 Permeabilityiscurrentlyexpressedindarcys.Onedarcy
and is the direct responsibility of Subcommittee C08.92 The Joseph E. Kopanda
...