200M Mullite Powder

1.It is 200M Mullite Powder.
2.It is made in Wellchina Guangdong of CHINA.
3.It is used in precision casting.

1.The  200M Mullite  Powder  is made by kaolin clay.

2.It  is  used for  stuccoing  in  precision casting  shell-making.

3.Its  tolerance  is 1700 °C.

4.It  is  used   in outer  layer  for  investment  casting  shell-making.

5.Its  color  is gray  and  white.

6.Chemical  ingrediant

46%≥Al2O3≥42%,

53%≥SiO2≥51%,

1.2≤Fe2O31≤1.5%,

Na2O+K2O ≤0.3%,

CaO+MgO2≤0.6%,

TiO2≤0.1%.

7.Physical   indicator

density≥2.5g/cm3,

specific gravity  ---2.6g/cm3,

water include< 0.03%,

fire resistence≥1750°C,

Reduction burning ≤0.3-0.4%,

Degree of dust ≤ 0.01-0.03%,

PH 7-9,

shell-hardness>8.0Mpa.

8.Pouring   the  casting,

easy shelling,

no  distortion,

reduced scale  is not easy,

finish good,

high  yield.