Medium temperature powder
Name：Medium temperature powder
Specification：DM-9
1、Chemical composition（%）：
| Name | MgO | CaO | Fe2O3 | SiO2 | Al2O3 |
| Standard value | ≥95 | ≤1.5 | ≤0.6 | ≤2.5 | ≤0.5 |
2、Physical index：
| Velocity of flow（F.R） | Density（ASTM） | ||||||||
| 180±15 S/100g | 2.30-2.40 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 | ≤6 | ||
3、Electrical property：
Test sample tube:
Material: Sus 304
Shrink pipe: Φ8.0mm-6.6mm
Length: 450mm
Heating wire: Ni80Cr20, Φ0.3mm
Heating time: 15 minutes
4、Package
25Kg carton or woven bag packaging, can also be packaged according to customer requirements.
5、Instructions for use and storage：
(1) DM-9 is a medium temperature powder.
(2) After silicone oil treatment, with moisture-proof performance.
(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 copper or stainless steel pipes ≤8W/c㎡ liquid heating elements or low-load dry-fired pipes.
(5) The heating element can be used for annealing at 420 ° C without sealing.
(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.
