High Density Calcium Silicate Board is a type of xonolite-based calcium silicate board which is excellent in heat resistance and 100% asbestos-free. It is excellent in machinability. So it is most suitable as thermal insulation material for transfer, casting and holding processes. It’s used in places where the insulation material is in direct contact with molten aluminum alloy. Such as launders, spouts, floats, hot top ring headers and the holding furnace for die-casting.
We offer several grades and types of technically advanced insulating refractory boards for molten metal applications. The carbon fibre reinforced calcium silicate boards available are N-17, N-19, CS-1 and N-600. The glass reinforced calcium silicate boards available are N-14, B-3 and B-3A. These refractory ceramic fibre free materials are available in sheets or as precision machined components.
Our machine shops are equipped with CNC tooling equipment to produce components to customer specifi cations. Popular project application information for each type of board material can be provided by MAGSCIE.
Ⅰ. Non-ferrous metals: Floats, Dip tubes, Spouts, Distribution boxes, Heat resistant splash guards, Dams, etc.
Ⅱ. Furnaces: Hot face linings for dosing/holding furnaces for aluminum casting, Load bearing housings, Insulation where high thermal and/or mechanical load is required.
Ⅲ. Oil & Gas: Collars, gaskets and pipe support rings, Spacers and bushes
| MAGSCIE BRAND | Unit | N-17 | N-19 | CS-1 | N-600 | N-14 | B-3 |
| Bulk density | kg/m³ | 817 | 925 | 797 | 801 | 855 | 850 |
| lb/ft³ | 51 | 58 | 50 | 50 | 53 | 53 | |
|
Loss On Ignition- Maximum Percentage) |
% | 5.6 | 6.8 | 3.2 | 3.8 | 4.8 | 5 |
|
Coeffi clent of Thermal Expansion |
10-6/℃ | 7 | 7 | 4.7 | 6.7 | 6.6 | 6.5 |
| 10-6/℉ | 3.9 | 3.9 | 2.72 | 3.72 | 3.67 | 3.61 | |
|
Maximum Service Temperature |
℃ | 1050 | 1050 | 1050 | 1050 | 1050 | 1050 |
| ℉ | 1922 | 1922 | 1922 | 1922 | 1922 | 1922 | |
|
Continuous Service Temperature |
℃ | 850 | 850 | 850 | 850 | 850 | 850 |
| ℉ | 1562 | 1562 | 1562 | 1562 | 1562 | 1562 | |
|
Compressive Strength |
Mpa | 24 | 24 | 19 | 19 | 17 | 18 |
| lb/in² | 3479 | 3479 | 2754 | 2754 | 2464 | 2609 | |
|
Flexural Strength |
Mpa | 8.8 | 8.8 | 7.3 | 7.5 | 8.8 | 6 |
| lb/in² | 1276 | 1276 | 1058 | 1087 | 1276 | 870 | |
| Thermal Shrinkage (Linear)-24 hours @ 750℃(1382℉) | |||||||
| % | 0.38 | 0.49 | 0.05 | 0.06 | 0.4 | 0.2 | |
| Thermal Conductivity | |||||||
|
300℃ |
W/(m.K) | 0.180 | 0.220 | 0.190 |
0.190 |
0.200 | 0.250 |
| 500℃ | W/(m.K) | 1.320 | 0.220 | 0.200 | 0.210 | 0.200 | 0.250 |
| 700℃ | W/(m.K) | 1.390 | 0.220 | 0.200 | 0.230 | 0.200 | 0.260 |
| 572℉ | BTU/(ft²×h×°F/in) | 1.249 | 1.526 | 1.318 | 1.318 | 1.388 | 1.735 |
| 932℉ | BTU/(ft²×h×°F/in) | 9.158 | 1.526 | 1.388 | 1.457 | 1.388 | 1.735 |
| 1292℉ | BTU/(ft²×h×°F/in) | 9.644 | 1.526 | 1.388 | 1.596 | 1.388 | 1.804 |
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