ELECRICAL GRADE MAGNESIUM OXIDE

Type: MTVF-3

Characteristics:

MTVF-3 is a low temperature powder with heavy silicone treatment, mainly used in low quality elements of low wattage loading or liquid heating elements, suitable for copper tube, iron tube, steel tube and aluminum tube.  Elements stuffed with this material do not require annealing or sealing but with perfect moisture proof performance.

Chemical analysis (%)

MgO              CaO               Al2O3             Fe2O3             SiO2

≥94.0           ≤2.5             ≤0.9             ≤0.7             ≤2.5

Particle distribution

Mesh               +40              +60         +80         +140       +200       +325       -325

Dia(μm)    +425        +250     +180      +106       +75         +45         -45

Quantity(%) 0-1      28±6   26±6    26±6       12±3  11±3    5±3

Tap density

2.32±0.04g/cm3  

Flow

Ford cup no. 3(φ2.165mm-2.185mm):  180±20 s/100g

Ford cup no.4(φ3.97mm-4.01mm):      37±3 s/100g

Electrical properties

Packing

         25 kg in a plastic plaited bag or 25 kg in a carton and 2 tons on a pallet. Special packing is available on requirement.

Security and storage

     Electrical grade magnesium oxide is a non-toxic product, but with some dust.  Masks and gloves are proposed to use during operation.

     Electrical grade magnesium oxide should be stored in dry places, and are suggested to be used out within 12 months after delivery