Casting sand foundry chromite sand AFS35-40 AFS40-45 AFS45-50 AFS50-55
High chromite stuffing sand is mainly made up of imported high pure chromite sand with reasonable particle size distribution, and suit for LF, VD,RH and other refining process.
Economicl sand used in casting industry
Item |
Unit |
Index |
Cr2O3 |
% |
≥46.0% |
SiO2 |
% |
≤1.0% |
FeO |
% |
≤26.5% |
CaO |
% |
≤0.30% |
MgO |
% |
≤10.0% |
Al2O3 |
% |
≤15.5% |
P |
% |
≤0.003% |
S |
% |
≤0.003% |
Cr/Fe |
|
1.55:1 |
Bulk Density |
g/cm³ |
2.5-3 |
Color |
/ |
Black |
PH |
/ |
7-9 |
The amount of the acid |
/ |
≤ 2 ML |
Percent soil |
% |
≤0.1 |
Percent Moisture |
% |
≤0.1 |
The sintered |
℃ |
1600 |
Percentage of free acid present in the sand |
% |
0 |