Marinite P, Marinite I & Marinite M
Oven dried formulations of BNZ boards are used in a variety of heat insulating processes, fire protection and machined parts. Selection is commonly based on a balance between strength and insulating qualities. Examples include oven walls and linings, soldering insulation, fire doors, fire training burn buildings, cable trays, personnel protection, and as USCG-approved insulation for marine ships and off-shore rigs. Back-up insulation applications include ladles, torpedo cars and tundishes in the iron and steel industry, lime and cement plant rotary kilns, and aluminum die cast holding furnaces.
| Properties |
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| Aluminum Contact Boards |
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| High Temperature Structural Insulation |
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| Low Temperature Industrial Board |
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| Available thicknesses | 1⁄4″ – 3″ | 1⁄2″ – 3″ | 1″ – 2″ | 1⁄2″ – 2″ | 1⁄2″ – 3″ | 1⁄4″ – 3″ | 1⁄2″ – 3″ | |||||||||||||
| Sheet Sizes | ALL SHEETS ARE 4 ft. x 8 ft. | |||||||||||||||||||
| Density | ||||||||||||||||||||
| pcf | 85 | 65 | 54 | 60 | 46 | 100 | 98 | |||||||||||||
| (kg/m–) | (1362) | (1041) | (865) | (961) | (737) | (1602) | (1570) | |||||||||||||
| Modulus of Rupture (Flexural strength) psi kg/cm² |
3000 (210) |
1400 (98) |
900 (63) |
1400 (98) |
800 (56) |
2600 (183) |
3000 (211) |
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| Comprehensive Strength | % | |||||||||||||||||||
| Ultimate Load, psi | 10300 | 3000 | 2200 | – | – | 10,400 | 13,350 | |||||||||||||
| kg/cm² | (724) | (211) | (155) | – | – | (731) | (939) | |||||||||||||
| @ 5% Deformation, psi | 6400 | 2400 | 1600 | 3050 | 1000 | 6500 | – | |||||||||||||
| kg/cm² | (450) | (169) | (112) | (214) | (70) | (457) | – | |||||||||||||
| Moisture Content | % | |||||||||||||||||||
| (normal), % of dry weight | 1.0 | 2.5 | 2.5 | 3.0 | 3.0 | 12 | 7 | |||||||||||||
| Thermal Conductivity | ||||||||||||||||||||
| Mean temperature, Btu-in/ft², hr, °F | ||||||||||||||||||||
| 250°F | – | – | – | – | – | 2.40 | 2.40 | |||||||||||||
| 400°F | 2.13 | – | .99 | 1.13 | 0.81 | – | – | |||||||||||||
| 600°F | – | – | 1.00 | 1.15 | 0.79 | – | – | |||||||||||||
| 800°F | 1.94 | 1.92 | 1.03 | 1.16 | 0.81 | – | – | |||||||||||||
| 1000°F | 2.01 | 1.95 | 1.06 | 1.17 | 0.86 | – | – | |||||||||||||
| Mean temperature, (W/mk) | ||||||||||||||||||||
| 121°C | – | – | – | – | – | 0.34 | 0.34 | |||||||||||||
| 204°C | 0.31 | – | 0.14 | 0.16 | 0.12 | – | – | |||||||||||||
| 316°C | – | – | 0.14 | 0.17 | 0.11 | – | – | |||||||||||||
| 427°C | 0.28 | 0.28 | 0.15 | 0.17 | 0.12 | – | – | |||||||||||||
| 538°C | 0.29 | 0.28 | 0.15 | 0.17 | 0.12 | – | – | |||||||||||||
| Shrinkage | ||||||||||||||||||||
| 24 hrs @ | 1600°F | 1350°F | 1350°F | 1200°F | 1200°F | 600°F | 600°F | |||||||||||||
| Linear (Length or width), % | 0.24 | 0.1 | 2.3 | 0.6 | 0.4 | 0.85 | 0.14 | |||||||||||||
| Thickness, % | 2.0 | 0.8 | 9.4 | 2.1 | 1.4 | 3.7 | 0.41 | |||||||||||||
| Electrical | ||||||||||||||||||||
| Arc Resistance, seconds, ASTM D 495 | 304 | – | – | – | – | 260 | 272 | |||||||||||||
| Volume Resistivity, ohm-cm, ASTM D 257 | 4.52 x 1012 | 5.0 x 108 | 9.8 x 107 | 7.1 x 1010 | 1.25 x 1013 | |||||||||||||||
| Dielectric Strength, v/mil, ASTM D 495 | 61 | – | – | 46 | 45 | 35 | 56 | |||||||||||||
| Screw Holding Strength | ||||||||||||||||||||
| @ 7⁄8″ penetration, lbs | 875 | 240 | 220 | 500 | 200 | – | – | |||||||||||||
| (k/g) | (397) | (109) | (100) | (227) | (91) | – | – | |||||||||||||
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Note: All BNZ products are non-asbestos. |
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