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Physical and Chemical properties of Schwendler refractory products |
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1 | Refractory Rollers |
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RPA - 1040 BT |
RPA - 1092 TN |
RPA - 1083 AT |
RPA - 1083 AT plus |
RPA - 1094 TN |
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Mineralogical analysis |
Phase |
Mullite |
Corundum |
Corundum |
Corundum |
Corundum |
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SiC |
Mullite |
Mullite |
Mullite |
Mullite |
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Cordierite |
- |
ZrO2 |
ZrO2 |
SiC |
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Chemical analysis |
Al203 |
% |
45 |
74 |
77 |
78 |
73 |
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SiO2 |
% |
43 |
23 |
19 |
18 |
24 |
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Zr02 |
% |
- |
- |
3 |
3 |
- |
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Fe203 |
% |
max. 0,6 |
max. 0,5 |
max. 0,5 |
max. 0,5 |
max. 0,5 |
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K2O+Na20 |
% |
max. 0,5 |
max. 0,5 |
max. 0,4 |
max. 0,4 |
max. 0,5 |
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Water absorption |
% |
8,0 |
9,0 |
10,0 |
9,0 |
8,0 |
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Apparent porosity |
% |
18,0 |
23,0 |
25,0 |
22,0 |
19,0 |
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Apparent density |
g/cm3 |
2,30 |
2,45 |
2,49 |
2,50 |
2,50 |
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Modulus of rupture at 25ºC |
Kgf/cm2 |
> 350 |
> 470 |
> 480 |
> 500 |
> 490 |
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Thermal expansion at 600ºC |
10-7 ºC-1 |
30 |
47 |
50 |
49 |
48 |
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Thermal shock resistance |
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Excellent |
Very good |
Very good |
Very good |
Very good |
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Maximum working temperature |
ºC |
1150 |
1250 |
1280 |
1290 |
1300 |
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2 | Extruded Pieces |
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RPA - MC17A |
RPA - MC30 |
RPA - MC34 |
RPA - MC37 |
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Mineralogical analysis |
Phase |
Cordierite |
Cordierite |
Cordierite |
Cordierite |
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- |
Mullite |
Mullite |
Mullite |
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Chemical analysis |
Al203 |
% |
45 |
47 |
48 |
47 |
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SiO2 |
% |
44 |
43 |
42 |
42 |
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MgO |
% |
7,0 |
6,5 |
6,0 |
6,5 |
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Fe203 |
% |
2,0 |
1,5 |
0,8 |
1,0 |
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Water absorption |
% |
12,0 |
10,0 |
8,0 |
10,0 |
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Apparent porosity |
% |
24,0 |
20,0 |
16,0 |
21,0 |
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Apparent density |
g/cm3 |
2,00 |
2,12 |
2,22 |
2,12 |
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Modulus of rupture at 25ºC |
Kgf/cm2 |
150 |
200 |
260 |
260 |
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Thermal expansion at 600ºC |
10-7 ºC-1 |
16 |
25 |
27 |
21 |
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Thermal shock resistance |
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Excellent |
Very good |
Very good |
Very good |
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Maximum working temperature |
ºC |
1220 |
1260 |
1280 |
1290 |
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3 | Special Casted Pieces |
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RPA - F1M |
RPA - F1 |
RPA - F2 |
RPA - F4 |
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Mineralogical analysis |
Phase |
Cordierite |
Cordierite |
Mullite |
Mullite |
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- |
Mullite |
- |
- |
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Chemical analysis |
Al203 |
% |
43 |
47 |
71 |
75 |
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SiO2 |
% |
48 |
44 |
27 |
24 |
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MgO |
% |
6,0 |
5,0 |
- |
- |
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Fe203 |
% |
max 1,5 |
max 1,0 |
max 0,5 |
max 0,5 |
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Water absorption |
% |
13,0 |
11,0 |
11,0 |
9,0 |
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Apparent porosity |
% |
25,0 |
24,0 |
25,0 |
22,0 |
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Apparent density |
g/cm3 |
1,97 |
2,00 |
2,35 |
2,45 |
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Modulus of rupture at 25ºC |
Kgf/cm2 |
120 |
140 |
160 |
130 |
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Thermal expansion at 600ºC |
10-7 ºC-1 |
24 |
26 |
50 |
47 |
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Thermal shock resistance |
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Excellent |
Excellent |
Very good |
Very good |
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Maximum working temperature |
ºC |
1250 |
1270 |
1500 (at flame) |
1500 (at flame) |
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| NOTE: Above data are general information based on typical process values. Variations may occur and REFRATARIOS PAULISTA reserve the right to modify them without previous notice. | |||||||||||||