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Special High Temperature MgO for Cartridge Heater G1

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Features

G1 is a special high temperature electrical grade MgO powder, mainly used in cartridge heaters. The insulation resistance under heating condition can be more than 2MΩ, and the leakage current is less than 0.17mA.


Chemical Analysis

CompositionMgOCaOFe2O3Al2O3SiO2
Value (%)≥97.5≤0.9≤0.45≤0.9≤3.5


Physical Properties

Flow RateTap DensityParticle Size Distribution
155±15s/100g2.27~2.37g/cm370~325


Particle Size Distribution

Mesh+60+70+80+100+150+200+325-325
Particle Size (μm)+280+224+180+154+100+71+46-46
Value (%)0~310~2020~355~1525~3510~202~90~3


Electrical Properties

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Test Condition

Material: SUS304

Rolling: ɸ8.0mm→ɸ6.6mm

Length: 450mm

Surface Loading: 7W/c㎡

Power on Time:20min

*The properties are the typical values and not the guaranteed values.


Packaging 

5Kg in a woven bag. Special Package is available on requirements.


Remarks

1. G1 is treated without silicone or treated with pretty light silicon oil.

2. Electrical grade MgO powder is non-toxic, but with some dust. It is recommended to wear anti-dust respirators and gloves during operation. 

3. The elements can stand 1050℃ annealing for 15-30 minutes and requires immediate sealing.

4. Electrical grade MgO powder should be stored in dry places, and best used within 6 months after delivery.