High temperature powder
Name：High temperature powder
Specification：DM-G3
1、Chemical composition（%）：
| Name | MgO | CaO | Fe2O3 | SiO2 | Al2O3 |
| Standard value | ≥96 | ≤1.0 | ≤0.5 | ≤2.0 | ≤0.5 |
2、Physical index：
| Velocity of flow（F.R） | Density（ASTM） | ||||||||
| 150±15 S/100g | 2.28-2.50 g/cm³ | ||||||||
| Particle size distribution% | Mesh number | +40 | +60 | +80 | +140 | +200 | +325 | -325 | |
| Screen size（mm） | 0.425 | 0.25 | 0.18 | 0.106 | 0.075 | 0.045 | -0.045 | ||
| Standard value | ≤0.5 | 25±5 | 25±5 | 25±5 | 15±5 | 10±5 | ≤5 | ||
3、Electrical property：
Test sample tube：
Materials：Sus 304
Contracted pipe：Φ8.0mm-6.6mm
Length：450mm
Heating wire：Ni80Cr20，Φ0.3mm
Heating time：15min
4、Package
25Kg carton or woven bag packaging, can also be packaged according to customer requirements.
5、Instructions for use and storage：
(1) DM-G3 is a high-temperature powder.
(2) The magnesium powder does not add silicone oil or add a very small amount of silicone oil.
(3) electrician grade magnesium oxide powder is non-toxic and harmless, but there will be a certain dust, it is recommended that when in use, the operator wear a mask and gloves.
(4) Mainly used for dry heating elements ≤10W/c㎡ in the air.
(5) The heating element needs 1050℃±50℃. 15 minutes to 30 minutes after the furnace. And after the furnace needs to be sealed as soon as possible to prevent secondary moisture absorption.
(6) electrician grade magnesium oxide should be placed in a dry position that can not be directly sunlight, it is recommended to use within 6 months after delivery.
