EXPANDABLE GRAPHITE
Expandable Graphite is material based on natural graphite with excellent insulating properties. When heated to 900ºC it expands several times, depending on the grades used. It is extremely effective when used with normal exothermic or insulating type anti-piping compounds, casting powders and bottom poured teeming compounds.
TECHNICAL DATA
CONTENTS
GRADES
DW-20
CF-40
CW-60
CW-100
Ash
9-15
25-28
9-15
9-15
pH
6-7.5
8-9
6-7.5
6-7.5
Expansion cc/gm/900ºC for 5 minutes
20 cc min.
40 cc min.
60 cc min.
100 cc min.
Mesh
PERCENTAGE RETAINED
+60
20-30%
30-35%
30-40 %
50-60 %
+100
30-40%
20-30%
30%
10-20%
+150
20
15-20%
20-25%
10-15%
-150
10-20%
20-30%
20-25%
10-15%