Description
Magnesium oxide board also called Mgo board and fireproof board is manufactured by using special craft through totally automatic product line. The materials of magnesium fireproof board are Magnesia (MGO), Magnesium Chloride (Mgcl2) and Alkali glass fiber mesh.
Comparison of different OCM mgo board quality as follow
Quality Levels |
Layer of Fiber Glass
|
Quality of Fiber glass |
Economical Level |
2 |
4*6 |
Standard Level |
2 |
4*6 and 6*6 |
Premium Level |
3 |
6*6 |
Specification
√ Thickness ranging from 3-25mm
√ Standard size: 1220*2440mm, 1200*2400mm.
√ Max width 1220mm, Max length 3660mm
√ Sanded back and slurry surface are all fully tested ICC $UL approved.
√ Special sizes available by special order.
√ Edge can be square,tapered,bevelled.
Application
Mgo Board used for Wall partition, Interior & Exterior wall, Ceiling, Flooring and prefabricated houses.
Technical dates
Compressive Strength |
~20 MPa (3,000 PSI) |
Impact Resistance |
> 6 kJ/m2 |
Tensile Strength |
> 5.5 MPa |
Density (Specific Mass) |
~1000 Kg/m3 (+/-<2%) |
Moisture Absorption |
~26% maximum saturation (slow absorption rate) |
Moisture Content |
~6% |
Water Vapour Diffusion |
~28 / 35 |
Specific Heat |
~930 J/kgK |
Thermal Conductivity |
~0.44 W / mK |
Modulus of elasticity |
~6045 N/mm2 |
Flexibility |
~20.1 N/mm2 maximum |
Surface Alkalinity |
~10 Ph |
Thermal Expansion Hot/Cold |
0,01 mm/mC (from temp +20C to -20C) |
Expansion in Water |
less than < 0.02% from ambient to saturation |
Freeze / Thaw - UNI EN 520 |
100 cycles without notable effects |
Frost Resistance |
no water drops form on surface |
Combustibility / Fire Ratings |
non-combustible / 12mm exceeds 1 hr fire rating |
Dimensional tolerance |
thick 0.2mm / width 2mm / length 3mm / Sq. 3mm |
Toxicity Pollutants Heavy Metals - UNI EN 12457-2 |
Below measurable levels of test instruments |
Asbestos Analysis |
Absent - not measurable |
Formaldehyde Analysis |
Absent - not measurable |
Sound Attenuation (9mm) |
tested design ASTM E90 = STC 48, 50, 55, & 60 |
Color |
Slate Grey and Chalk White |
Surface texture |
smooth one side; uniform machine textured back |
Basic Compounds |
(MgO)+(natural silicates)+(glass fibre)+(wood fibre) |