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electrical grade magnesium oxide (FH-7)
electrical grade magnesium oxide (FH-7)

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Quality/Safety Certification: 0.00


FH-7 is medium-low temperature powder, mainly used in high quality elements of low wattage loading or liquid heating element.

Electrical grade magnesium oxide

 

Type   FH-7

Characteristics

     FH-7 is  medium-low temperature powder, mainly used in high quality elements of low wattage loading or liquid heating elements.  Elements stuffed with this material do not require annealing or sealing but with perfect moisture proof performance.

Chemical analysis (%)

MgO

CaO

Al2O3

Fe2O3

SiO2

≥93.0

≤2.5

≤0.9

≤0.8

≤2.5

Particle distribution

Mesh

+40

+60

+80

+140

+200

+325

-325

Dia(um)

+425

+250

+180

+106

+75

+45

-45

Quantity(%)

0-1

24-38

16-28

18-30

7-13

5-11

0-8

Tap density

     2.25-2.35g/cm3

Flow property

     Ford cup no.3 (φ2.165mm-2.185mm): 160-240 s/100g

     Ford cup no.4 (φ3.97mm-4.01mm): 34-40 s/100g                

Packing

     Packed in polypropylene plastic woven jumbo bags of declared approximately 25 kilograms .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.

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