Marinite A

This thermal treated board has excellent resistance to thermal shock and good stability at high temperatures. It is used for conveying, containing and forming molten aluminium and other non-ferrous metals. Its higher strength makes it easier to machine.  


Holding furnace linings, tips for continuous casters, transition plates, rings, plugs, baffles, troughs, spouts, floats and filter boxes.


Technical Data

Density lbs/ft³ (kg/m³) 65 (1041)
Modulus of Rupture (Flexural Strength) psi (kg/cm²)
1-1/2" or less 1400 (98)
2" 1200 (84)
Compressive Strength
Ultimate load psi (kg/cm²) 3000 (211)
@ 5% deformation psi (kg/cm²) 2400 (169)
Moisture Content (normal), % of dry weight 2.5
Thermal Conductivity
Mean Temperature, Btu-in/ft², hr, °F
800°F 1.92
1000°F 1.95
Mean Temperature, (W/m°K)
427°C 0.28
538°C 0.28
Shrinkage 24 hours at 732°C (1950°F)
Linear (Length or width), % 0.1
Shrinkage 24 hours at 732°C (1950°F)
Thickness, % 0.8
Arc Resistance, seconds, ASTM D 495 -
Volume Resistivity, ohm-cm, ASTM D 257 -
Dielectric Strength, v/mil, ASTM D 495 -
Screw Holding Strength
@ 7/8" penetration, lbs (kg) 240 (109)
Durometer hardness 74
N.B. The information, details and values indicated are to the best of our knowledge. We recommend to conduct tests according to local conditions. The data is subject to some variations without notice.