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

Importancia y uso:

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

hecto^A

h

10¹

deka^A

da

10⁻¹

deci^A

d

10⁻²

centi^A

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.

Subcomité:

C08.92

Volúmen:

15.01

Número ICS:

01.060 (Quantities and units), 81.080 (Refractories)

Palabras clave:

metric; practice; properties; refractory;