DESCRIPTION
F4/R is an activated Bentonite , processed from high content of specially selected montmorillonite. F4/R is very suitable and superior characteristics for all kinds of foundry applications.

 

CHEMICAL PROPERTIES     (On dry basis at 105 oC)

 
 
 
 
         

 

PHYSICAL PROPERTIES

Moisture Content %
5% Suspension , pH  
Swelling ml per 2 g of clay
Liquid Limit % , min.
ml of methylene Blue ml per 0.5 g of clay
Dry particle size % pass 200 mesh , min.

 

FOUNDRY PROPERTIES

New sand
Bentonite
Water
92.8
5.0
2.2
91.4 6.0
2.6
90.2
7
2.8
89.0 8.0
3.0
87.8 9.0
3.2
86.4 10.0
3.6
UNIT
Density g, /2"x2" specimen Compactablility
148
40
148
40
148
40
148
40
148
40
148
40

%
Green Compression Strength
Green Shear Strength
0.62
0.21
0.75
0.25
.95
0.29
1.05
0.34
1.15
0.38
1.20
0.45
kg/cm2
kg/cm2
Mould Hardness
Spalling Strength
90
0.17
91
0.21
92
0.25
93
0.28
93
0.33
94
0.36
Scale "B"
kg/cm2
Green Permeability
105
102
99
96
93
90
Large Orifice

5 Min. Mixing Time