ASTM C673-97(2008)
Standard Classification of Fireclay and High-Alumina Plastic Refractories and Ramming Mixes
- Standard No.
- ASTM C673-97(2008)
- Release Date
- 1997
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM C673-97(2013)
- Latest
- ASTM C673-97(2022)
- Scope
This classification defines a group of classes for use by those producing or purchasing fireclay and high-alumina plastic refractories and ramming mixes. Each class is limited by PCE, or alumina content, or both. This classification is frequently used as a specification when the properties shown in Table 1 are the only items specified.
TABLE 1 Classification of Fireclay and High-Alumina Plastic Refractories and Ramming Mixes
Class
PCE, min
Al 2O3,
%
High-duty 31 NRA Super-duty 32½ NR 60 % alumina 35 57.6 to 62.5 65 % alumina 35-36 62.6-67.5 70 % alumina 36 67.6 to 72.5 80 % alumina 37 77.6 to 82.5 85 % alumina NR 82.6 to 87.5 90 % alumina NR 87.6 to 92.5 95 % alumina NR 92.6 to 97.5 100 % alumina NR >97.5 A NR = not required.
1.1 This classification covers fireclay and high-alumina plastic refractories and ramming mixes that can be pounded or rammed into place to form a monolithic structure. The terms “plastic” and“ ramming mix” are generally intended to describe the workability of the material. In this regard, plastics are considered to be materials having a workability index of more than 15 % in accordance with Test Method C 181
, while ramming mixes generally have less than 15 % workability by the same procedure.
ASTM C673-97(2008) Referenced Document
- ASTM C181 Standard Test Method for Workability Index of Fireclay and High-Alumina Plastic Refractories
- ASTM C24 Standard Test Method for Pyrometric Cone Equivalent (PCE) of Fireclay and High Alumina Refractory Materials
ASTM C673-97(2008) history
- 2022 ASTM C673-97(2022) Standard Classification of Fireclay and High-Alumina Plastic Refractories and Ramming Mixes
- 2018 ASTM C673-97(2018) Standard Classification of Fireclay and High-Alumina Plastic Refractories and Ramming Mixes
- 2013 ASTM C673-97(2013) Standard Classification of Fireclay and High-Alumina Plastic Refractories and Ramming Mixes
- 1997 ASTM C673-97(2008) Standard Classification of Fireclay and High-Alumina Plastic Refractories and Ramming Mixes
- 1997 ASTM C673-97(2003) Standard Classification of Fireclay and High-Alumina Plastic Refractories and Ramming Mixes
- 1997 ASTM C673-97 Standard Classification of Fireclay and High-Alumina Plastic Refractories and Ramming Mixes
